Make Firefox for Linux use Dolphin to ‘Open Containing Folder’

When I click on the Download Manager icon on the tool bar, Firefox for Linux 32.0 opens a small pane listing downloads in progress, if any, and a link ‘Show All Downloads’. If I click on the link, Firefox pops up a window listing all the files downloaded via the browser, each with a folder icon beside it. Hovering the mouse pointer over the folder icon displays a tooltip ‘Open Containing Folder’. For as long as I can remember with Firefox for Linux, clicking that folder icon resulted in the Audacious music player launching and playing an MP4 file that happens to be in my ~/Downloads/ directory!

Firstly, I have no idea why Firefox was launching a media player instead of opening the directory. Secondly, I have no idea why Firefox wanted to open that specific file rather than any of the other files in the directory. Thirdly, I have no idea why it was launching Audacious, because Audacious is not even specified as the default media player for MP4 files in KDE’s ‘System Settings’ > ‘File Associations’.

This has annoyed me for a long time, but only today did I resolve to fix it, although it was not so easy to find a working solution by searching the Web. It seems it is a common problem with Firefox in Linux, and I found threads in various forums recommending the creation of a set of preferences by using about:config. Some of those threads state that one of those preferences should specify Konqueror; other threads state that one of the preferences should specify a shell script. In the end I discovered a post in an openSUSE Forums thread from 2012 Re: How use Dolphin to “open containing folder” from firefox downloads? providing a broken link to a thread at a different Web site and, fortunately, quoting the solution which worked for me, which is to create a file named ~/.local/share/applications/defaults.list containing the following:

[Default Applications]
x-directory/normal=kde4-dolphin.desktop;kde4-kfmclient_dir.desktop;

Now when I click on the ‘Open Containing Folder’ icon in Firefox, Dolphin launches and displays the contents of ~/Downloads/ just as I would have expected from the beginning.

Opening multiple browser tabs simultaneously — AutoKey comes to the rescue

hotkey to launch an application

I sometimes consult several dictionary Web sites concurrently. Typically I have them open simultaneously on different browser tabs so that I can switch between them quickly. Naturally I have the sites bookmarked, but it is still a bit of a nuisance to have to open each site by clicking on the browser’s ‘Open a new tab’ icon and then clicking on a bookmark. So I thought it would be nice if I could have an icon in the browser or on the Desktop that I could click to open all the desired Web pages at once.

Well, I could have created a Desktop Configuration File in ~/Desktop/ to launch a command such as the one listed below, and given the file a nice icon.

firefox http://www.oxforddictionaries.com/ http://michaelis.uol.com.br/moderno/portugues/index.php http://www.conjuga-me.net/ http://www.priberam.pt/dlpo/ http://www.wordreference.com/

Then I would have been able to double-click on the icon on my Desktop, which would have launched a separate Firefox window with those five required Web sites in different tabs. But what if I happened to have an existing window maximised? I would then have to move it to be able to see the icon on the Desktop. So I decided that was not an ideal approach.

Next I thought about the possibility of a Firefox extension, so I searched the Mozilla Add-ons site and found one called Open Multiple Locations. But, from what I read, it seems the extension is no longer being maintained. Furthermore, it appears it would have to be launched from the browser’s File menu, which would still be a little inconvenient.

Then I remembered that I have the excellent utility AutoKey installed, so why not define a hotkey sequence to do what I wanted? This is what I did.

When you install AutoKey, it creates a directory ~/.config/autokey/data/My Phrases/ which contains directories named Addresses and Sample Scripts. The latter two directories contain examples of what you can do with AutoKey. Now, one of the example scripts in Sample Scripts is Insert Date.py, a very simple script which enables you to issue the Linux date command with a hotkey combination, preconfigured as Ctrl-Alt-d (Click on the Insert Date entry in the left pane of the AutoKey window and notice in the lower right pane that the hotkey is listed and there are Set and Clear buttons to enable you to change it).

So I used the Desktop Environment’s GUI to navigate to the directory ~/.config/autokey/data/My Phrases/ and created a directory which I called ~/.config/autokey/data/My Phrases/My Scripts/. I copied the file ~/.config/autokey/data/My Phrases/Sample Scripts/Insert Date.py into the new directory and renamed it Launch_Firefox_with_dictionaries.py then set its AutoKey hotkey combination to be Ctrl-Alt-f and edited it to contain the desired command:

output = system.exec_command("firefox http://www.oxforddictionaries.com/ http://michaelis.uol.com.br/moderno/portugues/index.php http://www.conjuga-me.net/ http://www.priberam.pt/dlpo/ http://www.wordreference.com/")
keyboard.send_keys(output)

Now, when I am using a browser (be it Firefox, Chrome, Konqueror or whatever) or any other application and I need to consult those dictionaries, I just press Ctrl-Alt-f and up pops a Firefox window containing five tabs with the Web sites I wish to be able to use. Done and done.

Of course, if you happen to be using a Desktop Environment that has its own shortcut tool, you can use that instead. For example, in KDE I could have instead used ‘System Settings’ > ‘Shortcuts and Gestures’ | ‘Custom Shortcuts’ and configured Ctrl-Alt-f to run the above-mentioned command to launch Firefox with those five URLs. (You need to log out of KDE and log in again for the shortcut to become active.) That would have achieved exactly the same result as with AutoKey.

WINE tips: File associations for Windows applications in Linux (continued)

There is a downside to the approach described in my previous post regarding file associations for Windows applications run via WINE, at least in the case of KDE.

By using KDE’s ‘System Settings’ > ‘File Associations’ to change the application launch command from:

env WINEPREFIX="/home/fitzcarraldo/.wine-visio5" WINEARCH="win32" wine /home/fitzcarraldo/.wine-visio5/drive_c/Program\ Files/Visio/Visio32.EXE

to:

env WINEPREFIX="/home/fitzcarraldo/.wine-visio5" WINEARCH="win32" wine C:\\windows\\command\\start.exe /Unix %U

the launch command in KDE’s Kicker application launcher menu is also changed to the latter. Trying to launch the Windows application from the Kicker menu (Wine > Programs > a_Windows_application) then fails. Presumably this is because the wine command expects a filename (the %U in the command string) but that is not being provided.

Alternative 1

One solution is to use a shell script as described in my earlier post: WINE tips: How to associate IrfanView with an image file type in Linux. Kicker can still be used to launch the application (e.g. Wine > Programs > IrfanView) when the menu command is of the following form but no filename is provided (even though the %f is left in the command string):

/home/fitzcarraldo/launch_IrfanView.sh %f

Alternative 2

Another solution – well, really a work-around – is to accept that the Windows application cannot be launched from the Kicker menu and to create a separate Desktop Configuration File in /home/fitzcarraldo/Desktop/ which uses a different command to launch the application. For example, in my previous post the file association I configured via ‘System Settings’ > ‘File Associations’ for Visio was:

env WINEPREFIX="/home/fitzcarraldo/.wine-visio5" WINEARCH="win32" wine C:\\windows\\command\\start.exe /Unix %U

and therefore the command in the Kicker menu entry is the same, but I created a Desktop Configuration File which I named ‘/home/fitzcarraldo/Desktop/Visio 5 Professional‘ which contains the command:

env WINEPREFIX="/home/fitzcarraldo/.wine-visio5" WINEARCH="win32" wine /home/fitzcarraldo/.wine-visio5/drive_c/Program\ Files/Visio/Visio32.EXE

$ ls -la ~/Desktop/Visio*
-rwxrwxrwx 1 fitzcarraldo users 562 Aug 26 17:42 /home/fitzcarraldo/Desktop/Visio 5 Professional

Notice that the command to launch the Windows application does not contain a filename parameter (%U), so when I double-click on the icon on the Desktop it launches Visio.

Summary

Ideally, KDE should be changed to allow the application launching command in ‘System Settings’ > ‘File Associations’ to be edited to be different to the application launching command in the Kicker menu. In the absence of that, you have two alternatives in the case of WINE:

  1. Create a shell script to launch the application. This allows you to launch the Windows application via Kicker and by double-clicking on a file of the applicable type.

    or

  2. Create a separate Desktop Configuration File in e.g. the ~/Desktop/ directory. This allows you to launch the Windows application by double-clicking on a Desktop Configuration File for the application and by double-clicking on a file of the applicable type. However you cannot launch the application from its entry in the Kicker menu.

WINE tips: File associations of Windows applications in Linux

I have several applications for Windows installed under WINE in Linux. These applications launch correctly if I double-click on a file for that application, but, in the case of some of these applications, the file itself is not opened. Therefore I first have to launch the application and then load the file from within the application (File > Open, or whatever). Some time ago I explained how to fix this in the case of IrfanView by creating a shell script – see my post WINE tips: How to associate IrfanView with an image file type in Linux – but there is an easier way to do it in many cases, as illustrated by the example below for another Windows application I use regularly in Linux. I finally got fed up with not being able to open .vsd (Visio drawing) files by double-clicking on them in Linux, and decided to fix this. The same procedure applies, whatever the Windows application.

I use KDE, but the principle applies whatever Desktop Environment you are using. Just use the relevant File Association configuration tool for that Desktop Environment.

  1. I selected ‘System Settings’ > ‘File Associations’ from the KDE Kickoff menu launcher.

  2. I entered ‘vsd’ (without the quotes) in the search field in order to find the application associated with that file type.

    The ‘Known Types’ box then displayed the following:

    >- application

  3. When I expanded that by clicking on it, the ‘Known Types’ box displayed the following two application file types:

    v- application
            vnd.ms-visio.viewer
            vnd.visio

  4. Clicking on either displayed ‘Visio 5.0 Professional’ in the ‘Application Preference Order’ box. I selected it and clicked on ‘Edit…’, which opened a Properties window for the application’s desktop configuration file.

  5. I clicked on the ‘Application’ tab. The ‘Command’ box contained the following command:
    env WINEPREFIX="/home/fitzcarraldo/.wine-visio5" WINEARCH="win32" wine /home/fitzcarraldo/.wine-visio5/drive_c/Program\ Files/Visio/Visio32.EXE

    (The wine command itself has to be preceded by the definition of the WINEPREFIX and WINEARCH environment variables because I specified those environment variables originally when I installed the application via WINE.)

    I changed the command to be the following:

    env WINEPREFIX="/home/fitzcarraldo/.wine-visio5" WINEARCH="win32" wine C:\\windows\\command\\start.exe /Unix %U

    for both vnd.ms-viso.viewer and vnd.visio application file types, and clicked on ‘OK’ and ‘Apply’.

That’s all there was to it. Now when I double-click on any file ending with ‘.vsd’, Visio launches as before but the actual file is opened in the application. Very straightforward, and I really should have made the effort to fix it sooner. :-)

Dragging windows between sides of the KWin Desktop Cube

The KDE Desktop Cube is one of the ‘eye-candy’ features provided by KWin’s Desktop Effects. Actually I use the desktop cube a lot at work (far more than at home), as I often have several windows open simultaneously on each virtual desktop (cube side) and, for some reason, I find it more natural (and fun) to rotate an on-screen cube rather than switch between 2D virtual desktops. Perhaps it’s because we live in a 3D world?

I also like to be able to drag windows from one cube face to another, a KWin feature I also find natural and fast to use. However, its configuration is not as intuitive as that of some of the other desktop effects. Also, this feature can be prevented from working if some of the other effects are enabled. Sometimes I find the feature has become disabled after I have upgraded KDE. For example, if I drag a window to the edge of the screen the cube stubbornly refuses to rotate and the window snaps to the side of the screen and expands vertically (something with which Windows 7 users will be familiar). I always forget how to reconfigure KWin to be able to drag windows between cube faces, and end up wasting several minutes fiddling with the KWin settings. This happened to me again today, so, in case others get fed up trying to get it working, here is a configuration that works for me:

  • Select ‘System Settings’ > ‘Desktop Effects’.
  • Click on the ‘All Effects’ tab.
  • ‘Desktop Cube’ and ‘Desktop Cube Animation’ should be ticked.
  • Click on the spanner icon of ‘Desktop Cube Animation’ and make sure ‘Start animation when moving windows towards screen edges’ is not ticked.

  • Select ‘System Settings’ > ‘Workspace Behaviour’.
  • Click on ‘Screen Edges’.
  • Make sure ‘Maximise windows by dragging them to the top of the screen’ and ‘Tile windows by dragging them to the side of the screen’ are not ticked.
  • Select ‘Only When Moving Windows’ for ‘Switch desktop on edge’.
  • Adjust the ‘Activation delay’ and ‘Reactivation delay’ to your taste. I find 150 ms and 1000 ms, respectively, work well on my main laptop.

Where have my Konqueror favicons gone?

I upgraded to KDE 4.13.0 recently only to find that Konqueror no longer displayed some of the favicons, neither in the Bookmarks menu nor in the URL address bar. It seems this is a known KDE bug first reported in 2007 (Bug 153049 – Konqueror from KDE4 doesn’t load some favicons) although apparently it does not affect many users, which is why it still has not been fixed, I suppose.

In 2010 a KDE user reported in the KDE Community Forums thread Konqueror favicons again the steps he used to fix the problem in his installation, but he did not give the precise file names and paths of the files he deleted. In any case, I did not fancy deleting any sockets.

I tried various things, such as exporting and reimporting bookmarks in Konqueror, but was unable to get the missing favicons to display again. In the end I accepted I would have to lose all my bookmarks and decided to reinstall Konqueror. However, not all files are removed when a package is uninstalled, so I made sure everything was gone as follows:

1. Uninstall Konqueror

# emerge -C konqueror

2. Delete left-over directories and files relating to Konqueror

# rm -rf /home/fitzcarraldo/.kde4/share/apps/konqueror/
# rm /home/fitzcarraldo/.kde4/share/config/konq*

3. Log out of KDE and switch to a VT (virtual terminal, a.k.a. console)

# rm /var/tmp/kdecache-fitzcarraldo/favicons/*
# rm /var/tmp/kdecache-fitzcarraldo/icon-cache.kcache

4. Log in to KDE again and re-install Konqueror

# emerge -1v konqueror

5. Launch Konqueror and bookmark all your favourite Web sites.

That will get favicons working again in Konqueror, but what a hassle. KDE developers, please fix this old bug (no. 153049)!

Using KWrite to find and replace a character with a CRLF (Carriage Return/Line Feed)

Occasionally I need to edit a long string and replace the space character with a CRLF and some text. Even though I was sure the KDE editor KWrite could do that, I had never bothered to find out how. Today I finally bit the bullet. It’s not difficult, of course. To show you how it is done, I’ll give an actual example…

I wanted to edit in KWrite the single line of text shown below. (Not that it’s relevant to the subject of this post, but the line was a command to the Gentoo package manager to install a long list of packages, and I wanted to split it into separate commands in order to install each package individually.)

emerge -vD1 --backtrack=30 media-video/dvdrip:0 dev-vcs/git:0 dev-vcs/subversion:0 net-print/foomatic-db-engine:0 app-antivirus/clamtk:0 dev-perl/XML-SAX:0 dev-perl/X11-Protocol:0 dev-perl/Goo-Canvas:0 dev-perl/Readonly:0 dev-perl/File-Find-Rule:0 dev-perl/Net-SSLeay:0 dev-perl/XML-LibXML:0 dev-perl/HTTP-Message:0 dev-perl/Digest-SHA1:0 dev-perl/XML-XPath:0 dev-perl/File-Which:0 dev-perl/Authen-SASL:0 dev-perl/glib-perl:0 dev-perl/prefork:0 dev-perl/IO-Socket-SSL:0 dev-perl/Exception-Class:0 dev-perl/Proc-Simple:0 dev-perl/WWW-Mechanize:0 dev-perl/gnome2-canvas:0 dev-perl/gnome2-vfs-perl:0 dev-perl/IO-String:0 dev-perl/HTML-Tagset:0 dev-perl/Carp-Clan:0 dev-perl/Pod-Spell:0 dev-perl/Sane:0 dev-perl/TermReadKey:0 dev-perl/HTTP-Date:0 dev-perl/Encode-Locale:0 dev-perl/Event-RPC:0 dev-perl/File-HomeDir:0 dev-perl/Bit-Vector:0 dev-perl/gnome2-wnck:0 dev-perl/File-Copy-Recursive:0 dev-perl/Text-Unidecode:0 dev-perl/Unicode-EastAsianWidth:0 dev-perl/extutils-pkgconfig:0 dev-perl/Clone:0 dev-perl/Event-ExecFlow:0 dev-perl/B-Keywords:0 dev-perl/PDF-API2:0 dev-perl/HTTP-Negotiate:0 dev-perl/HTML-Form:0 dev-perl/extutils-depends:0 dev-perl/PlRPC:0 dev-perl/libwww-perl:0 dev-perl/gtk2-perl:0 dev-perl/File-MimeInfo:0 dev-perl/Font-TTF:0 dev-perl/libintl-perl:0 dev-perl/List-MoreUtils:0 dev-perl/Log-Log4perl:0 dev-perl/XML-DOM:0 dev-perl/HTML-Parser:0 dev-perl/Try-Tiny:0 dev-perl/XML-Twig:0 dev-perl/Gtk2-Ex-Simple-List:0 dev-perl/LWP-MediaTypes:0 dev-perl/LWP-Protocol-https:0 dev-perl/XML-Simple:0 dev-perl/Pango:0 dev-perl/set-scalar:0 dev-perl/Gtk2-Unique:0 dev-perl/Params-Util:0 dev-perl/Net-Daemon:0 dev-perl/GSSAPI:0 dev-perl/XML-NamespaceSupport:0 dev-perl/PPI:0 dev-perl/Proc-ProcessTable:0 dev-perl/String-Format:0 dev-perl/Date-Calc:0 dev-perl/XML-Parser:0 dev-perl/Email-Address:0 dev-perl/Class-Data-Inheritable:0 dev-perl/Email-Simple:0 dev-perl/JSON:0 dev-perl/gnome2-perl:0 dev-perl/XML-SAX-Base:0 dev-perl/Net-SMTP-SSL:0 dev-perl/Gtk2-ImageView:0 dev-perl/IO-HTML:0 dev-perl/WWW-RobotRules:0 dev-perl/Digest-HMAC:0 dev-perl/HTTP-Cookies:0 dev-perl/DBI:0 dev-perl/URI:0 dev-perl/Text-Iconv:0 dev-perl/gtk2-ex-formfactory:0 dev-perl/Email-Date-Format:0 dev-perl/libxml-perl:0 dev-perl/XML-SAX-Writer:0 dev-perl/XML-Filter-BufferText:0 dev-perl/Number-Compare:0 dev-perl/XML-RegExp:0 dev-perl/Email-LocalDelivery:0 dev-perl/config-general:0 dev-perl/HTTP-Daemon:0 dev-perl/File-Listing:0 dev-perl/Devel-StackTrace:0 dev-perl/Set-IntSpan:0 dev-perl/Cairo:0 dev-perl/Email-FolderType:0 dev-perl/XML-Handler-YAWriter:0 dev-perl/Archive-Zip:0 dev-perl/Net-DBus:0 dev-perl/DBD-mysql:0 dev-perl/AnyEvent:0 dev-perl/perltidy:0 dev-perl/Locale-gettext:0 dev-perl/Sort-Naturally:0 dev-perl/Net-HTTP:0 dev-perl/Perl-Critic:0 media-gfx/gscan2pdf:0 media-libs/exiftool:0 perl-core/CPAN-Meta-Requirements:0 virtual/perl-CPAN-Meta-Requirements:0 perl-core/IPC-Cmd:0 virtual/perl-IPC-Cmd:0 perl-core/Storable:0 virtual/perl-Storable:0 perl-core/File-Spec:0 virtual/perl-File-Spec:0 perl-core/CPAN-Meta:0 virtual/perl-CPAN-Meta:0 perl-core/Getopt-Long:0 virtual/perl-Getopt-Long:0 perl-core/Locale-Maketext-Simple:0 virtual/perl-Locale-Maketext-Simple:0 perl-core/ExtUtils-Manifest:0 virtual/perl-ExtUtils-Manifest:0 perl-core/Pod-Simple:0 virtual/perl-Pod-Simple:0 perl-core/CPAN-Meta-YAML:0 virtual/perl-CPAN-Meta-YAML:0 perl-core/Encode:0 virtual/perl-Encode:0 perl-core/Compress-Raw-Bzip2:0 virtual/perl-Compress-Raw-Bzip2:0 perl-core/Module-Load:0 virtual/perl-Module-Load:0 perl-core/Archive-Tar:0 virtual/perl-Archive-Tar:0 perl-core/Scalar-List-Utils:0 virtual/perl-Scalar-List-Utils:0 perl-core/ExtUtils-CBuilder:0 virtual/perl-ExtUtils-CBuilder:0 perl-core/Parse-CPAN-Meta:0 virtual/perl-Parse-CPAN-Meta:0 perl-core/version:0 virtual/perl-version:0 perl-core/Digest-SHA:0 virtual/perl-Digest-SHA:0 perl-core/Module-Load-Conditional:0 virtual/perl-Module-Load-Conditional:0 perl-core/Compress-Raw-Zlib:0 virtual/perl-Compress-Raw-Zlib:0 perl-core/ExtUtils-Install:0 virtual/perl-ExtUtils-Install:0 perl-core/IO:0 virtual/perl-IO:0 perl-core/Time-Local:0 virtual/perl-Time-Local:0 perl-core/Module-CoreList:0 virtual/perl-Module-CoreList:0 perl-core/Digest-MD5:0 virtual/perl-Digest-MD5:0 perl-core/JSON-PP:0 virtual/perl-JSON-PP:0 perl-core/ExtUtils-ParseXS:0 virtual/perl-ExtUtils-ParseXS:0 perl-core/File-Temp:0 virtual/perl-File-Temp:0 perl-core/Params-Check:0 virtual/perl-Params-Check:0 perl-core/Module-Metadata:0 virtual/perl-Module-Metadata:0 perl-core/Sys-Syslog:0 virtual/perl-Sys-Syslog:0 perl-core/IO-Compress:0 virtual/perl-IO-Compress:0 perl-core/Test-Harness:0 virtual/perl-Test-Harness:0

With the above line of text in a KWrite window, I did the following:

1. I selected Edit > Replace… from the KWrite menu.

2. At the bottom of the KWrite window, I changed the Mode from ‘Plain text’ to ‘Regular expression’.

3. I clicked in the ‘Find’ box and pressed the Space bar to enter a space character.

4. I clicked in the ‘Replace’ box and entered the following text (note that there is ‘\n’ at the beginning and a space at the end):

\nemerge -vD1 --backtrack=30 

The ‘\n‘ represents a CRLF (Carriage Return plus Line Feed).

5. I ticked ‘Selection only’.

6. With the mouse I selected the text in which I wanted to make the replacement, i.e. I selected from (and including) the space following the first package (media-video/dvdrip:0) all the way to the end of the line.

7. I clicked on ‘Replace All’.

The result looked like this:

emerge -vD1 --backtrack=30 media-video/dvdrip:0
emerge -vD1 --backtrack=30 dev-vcs/git:0
emerge -vD1 --backtrack=30 dev-vcs/subversion:0
emerge -vD1 --backtrack=30 net-print/foomatic-db-engine:0
emerge -vD1 --backtrack=30 app-antivirus/clamtk:0
emerge -vD1 --backtrack=30 dev-perl/XML-SAX:0
emerge -vD1 --backtrack=30 dev-perl/X11-Protocol:0
emerge -vD1 --backtrack=30 dev-perl/Goo-Canvas:0
emerge -vD1 --backtrack=30 dev-perl/Readonly:0
emerge -vD1 --backtrack=30 dev-perl/File-Find-Rule:0
emerge -vD1 --backtrack=30 dev-perl/Net-SSLeay:0
emerge -vD1 --backtrack=30 dev-perl/XML-LibXML:0
emerge -vD1 --backtrack=30 dev-perl/HTTP-Message:0
emerge -vD1 --backtrack=30 dev-perl/Digest-SHA1:0
emerge -vD1 --backtrack=30 dev-perl/XML-XPath:0
emerge -vD1 --backtrack=30 dev-perl/File-Which:0
emerge -vD1 --backtrack=30 dev-perl/Authen-SASL:0
emerge -vD1 --backtrack=30 dev-perl/glib-perl:0
emerge -vD1 --backtrack=30 dev-perl/prefork:0
emerge -vD1 --backtrack=30 dev-perl/IO-Socket-SSL:0
emerge -vD1 --backtrack=30 dev-perl/Exception-Class:0
emerge -vD1 --backtrack=30 dev-perl/Proc-Simple:0
emerge -vD1 --backtrack=30 dev-perl/WWW-Mechanize:0
emerge -vD1 --backtrack=30 dev-perl/gnome2-canvas:0
emerge -vD1 --backtrack=30 dev-perl/gnome2-vfs-perl:0
emerge -vD1 --backtrack=30 dev-perl/IO-String:0
emerge -vD1 --backtrack=30 dev-perl/HTML-Tagset:0
emerge -vD1 --backtrack=30 dev-perl/Carp-Clan:0
emerge -vD1 --backtrack=30 dev-perl/Pod-Spell:0
emerge -vD1 --backtrack=30 dev-perl/Sane:0
emerge -vD1 --backtrack=30 dev-perl/TermReadKey:0
emerge -vD1 --backtrack=30 dev-perl/HTTP-Date:0
emerge -vD1 --backtrack=30 dev-perl/Encode-Locale:0
emerge -vD1 --backtrack=30 dev-perl/Event-RPC:0
emerge -vD1 --backtrack=30 dev-perl/File-HomeDir:0
emerge -vD1 --backtrack=30 dev-perl/Bit-Vector:0
emerge -vD1 --backtrack=30 dev-perl/gnome2-wnck:0
emerge -vD1 --backtrack=30 dev-perl/File-Copy-Recursive:0
emerge -vD1 --backtrack=30 dev-perl/Text-Unidecode:0
emerge -vD1 --backtrack=30 dev-perl/Unicode-EastAsianWidth:0
emerge -vD1 --backtrack=30 dev-perl/extutils-pkgconfig:0
emerge -vD1 --backtrack=30 dev-perl/Clone:0
emerge -vD1 --backtrack=30 dev-perl/Event-ExecFlow:0
emerge -vD1 --backtrack=30 dev-perl/B-Keywords:0
emerge -vD1 --backtrack=30 dev-perl/PDF-API2:0
emerge -vD1 --backtrack=30 dev-perl/HTTP-Negotiate:0
emerge -vD1 --backtrack=30 dev-perl/HTML-Form:0
emerge -vD1 --backtrack=30 dev-perl/extutils-depends:0
emerge -vD1 --backtrack=30 dev-perl/PlRPC:0
emerge -vD1 --backtrack=30 dev-perl/libwww-perl:0
emerge -vD1 --backtrack=30 dev-perl/gtk2-perl:0
emerge -vD1 --backtrack=30 dev-perl/File-MimeInfo:0
emerge -vD1 --backtrack=30 dev-perl/Font-TTF:0
emerge -vD1 --backtrack=30 dev-perl/libintl-perl:0
emerge -vD1 --backtrack=30 dev-perl/List-MoreUtils:0
emerge -vD1 --backtrack=30 dev-perl/Log-Log4perl:0
emerge -vD1 --backtrack=30 dev-perl/XML-DOM:0
emerge -vD1 --backtrack=30 dev-perl/HTML-Parser:0
emerge -vD1 --backtrack=30 dev-perl/Try-Tiny:0
emerge -vD1 --backtrack=30 dev-perl/XML-Twig:0
emerge -vD1 --backtrack=30 dev-perl/Gtk2-Ex-Simple-List:0
emerge -vD1 --backtrack=30 dev-perl/LWP-MediaTypes:0
emerge -vD1 --backtrack=30 dev-perl/LWP-Protocol-https:0
emerge -vD1 --backtrack=30 dev-perl/XML-Simple:0
emerge -vD1 --backtrack=30 dev-perl/Pango:0
emerge -vD1 --backtrack=30 dev-perl/set-scalar:0
emerge -vD1 --backtrack=30 dev-perl/Gtk2-Unique:0
emerge -vD1 --backtrack=30 dev-perl/Params-Util:0
emerge -vD1 --backtrack=30 dev-perl/Net-Daemon:0
emerge -vD1 --backtrack=30 dev-perl/GSSAPI:0
emerge -vD1 --backtrack=30 dev-perl/XML-NamespaceSupport:0
emerge -vD1 --backtrack=30 dev-perl/PPI:0
emerge -vD1 --backtrack=30 dev-perl/Proc-ProcessTable:0
emerge -vD1 --backtrack=30 dev-perl/String-Format:0
emerge -vD1 --backtrack=30 dev-perl/Date-Calc:0
emerge -vD1 --backtrack=30 dev-perl/XML-Parser:0
emerge -vD1 --backtrack=30 dev-perl/Email-Address:0
emerge -vD1 --backtrack=30 dev-perl/Class-Data-Inheritable:0
emerge -vD1 --backtrack=30 dev-perl/Email-Simple:0
emerge -vD1 --backtrack=30 dev-perl/JSON:0
emerge -vD1 --backtrack=30 dev-perl/gnome2-perl:0
emerge -vD1 --backtrack=30 dev-perl/XML-SAX-Base:0
emerge -vD1 --backtrack=30 dev-perl/Net-SMTP-SSL:0
emerge -vD1 --backtrack=30 dev-perl/Gtk2-ImageView:0
emerge -vD1 --backtrack=30 dev-perl/IO-HTML:0
emerge -vD1 --backtrack=30 dev-perl/WWW-RobotRules:0
emerge -vD1 --backtrack=30 dev-perl/Digest-HMAC:0
emerge -vD1 --backtrack=30 dev-perl/HTTP-Cookies:0
emerge -vD1 --backtrack=30 dev-perl/DBI:0
emerge -vD1 --backtrack=30 dev-perl/URI:0
emerge -vD1 --backtrack=30 dev-perl/Text-Iconv:0
emerge -vD1 --backtrack=30 dev-perl/gtk2-ex-formfactory:0
emerge -vD1 --backtrack=30 dev-perl/Email-Date-Format:0
emerge -vD1 --backtrack=30 dev-perl/libxml-perl:0
emerge -vD1 --backtrack=30 dev-perl/XML-SAX-Writer:0
emerge -vD1 --backtrack=30 dev-perl/XML-Filter-BufferText:0
emerge -vD1 --backtrack=30 dev-perl/Number-Compare:0
emerge -vD1 --backtrack=30 dev-perl/XML-RegExp:0
emerge -vD1 --backtrack=30 dev-perl/Email-LocalDelivery:0
emerge -vD1 --backtrack=30 dev-perl/config-general:0
emerge -vD1 --backtrack=30 dev-perl/HTTP-Daemon:0
emerge -vD1 --backtrack=30 dev-perl/File-Listing:0
emerge -vD1 --backtrack=30 dev-perl/Devel-StackTrace:0
emerge -vD1 --backtrack=30 dev-perl/Set-IntSpan:0
emerge -vD1 --backtrack=30 dev-perl/Cairo:0
emerge -vD1 --backtrack=30 dev-perl/Email-FolderType:0
emerge -vD1 --backtrack=30 dev-perl/XML-Handler-YAWriter:0
emerge -vD1 --backtrack=30 dev-perl/Archive-Zip:0
emerge -vD1 --backtrack=30 dev-perl/Net-DBus:0
emerge -vD1 --backtrack=30 dev-perl/DBD-mysql:0
emerge -vD1 --backtrack=30 dev-perl/AnyEvent:0
emerge -vD1 --backtrack=30 dev-perl/perltidy:0
emerge -vD1 --backtrack=30 dev-perl/Locale-gettext:0
emerge -vD1 --backtrack=30 dev-perl/Sort-Naturally:0
emerge -vD1 --backtrack=30 dev-perl/Net-HTTP:0
emerge -vD1 --backtrack=30 dev-perl/Perl-Critic:0
emerge -vD1 --backtrack=30 media-gfx/gscan2pdf:0
emerge -vD1 --backtrack=30 media-libs/exiftool:0
emerge -vD1 --backtrack=30 perl-core/CPAN-Meta-Requirements:0
emerge -vD1 --backtrack=30 virtual/perl-CPAN-Meta-Requirements:0
emerge -vD1 --backtrack=30 perl-core/IPC-Cmd:0
emerge -vD1 --backtrack=30 virtual/perl-IPC-Cmd:0
emerge -vD1 --backtrack=30 perl-core/Storable:0
emerge -vD1 --backtrack=30 virtual/perl-Storable:0
emerge -vD1 --backtrack=30 perl-core/File-Spec:0
emerge -vD1 --backtrack=30 virtual/perl-File-Spec:0
emerge -vD1 --backtrack=30 perl-core/CPAN-Meta:0
emerge -vD1 --backtrack=30 virtual/perl-CPAN-Meta:0
emerge -vD1 --backtrack=30 perl-core/Getopt-Long:0
emerge -vD1 --backtrack=30 virtual/perl-Getopt-Long:0
emerge -vD1 --backtrack=30 perl-core/Locale-Maketext-Simple:0
emerge -vD1 --backtrack=30 virtual/perl-Locale-Maketext-Simple:0
emerge -vD1 --backtrack=30 perl-core/ExtUtils-Manifest:0
emerge -vD1 --backtrack=30 virtual/perl-ExtUtils-Manifest:0
emerge -vD1 --backtrack=30 perl-core/Pod-Simple:0
emerge -vD1 --backtrack=30 virtual/perl-Pod-Simple:0
emerge -vD1 --backtrack=30 perl-core/CPAN-Meta-YAML:0
emerge -vD1 --backtrack=30 virtual/perl-CPAN-Meta-YAML:0
emerge -vD1 --backtrack=30 perl-core/Encode:0
emerge -vD1 --backtrack=30 virtual/perl-Encode:0
emerge -vD1 --backtrack=30 perl-core/Compress-Raw-Bzip2:0
emerge -vD1 --backtrack=30 virtual/perl-Compress-Raw-Bzip2:0
emerge -vD1 --backtrack=30 perl-core/Module-Load:0
emerge -vD1 --backtrack=30 virtual/perl-Module-Load:0
emerge -vD1 --backtrack=30 perl-core/Archive-Tar:0
emerge -vD1 --backtrack=30 virtual/perl-Archive-Tar:0
emerge -vD1 --backtrack=30 perl-core/Scalar-List-Utils:0
emerge -vD1 --backtrack=30 virtual/perl-Scalar-List-Utils:0
emerge -vD1 --backtrack=30 perl-core/ExtUtils-CBuilder:0
emerge -vD1 --backtrack=30 virtual/perl-ExtUtils-CBuilder:0
emerge -vD1 --backtrack=30 perl-core/Parse-CPAN-Meta:0
emerge -vD1 --backtrack=30 virtual/perl-Parse-CPAN-Meta:0
emerge -vD1 --backtrack=30 perl-core/version:0
emerge -vD1 --backtrack=30 virtual/perl-version:0
emerge -vD1 --backtrack=30 perl-core/Digest-SHA:0
emerge -vD1 --backtrack=30 virtual/perl-Digest-SHA:0
emerge -vD1 --backtrack=30 perl-core/Module-Load-Conditional:0
emerge -vD1 --backtrack=30 virtual/perl-Module-Load-Conditional:0
emerge -vD1 --backtrack=30 perl-core/Compress-Raw-Zlib:0
emerge -vD1 --backtrack=30 virtual/perl-Compress-Raw-Zlib:0
emerge -vD1 --backtrack=30 perl-core/ExtUtils-Install:0
emerge -vD1 --backtrack=30 virtual/perl-ExtUtils-Install:0
emerge -vD1 --backtrack=30 perl-core/IO:0
emerge -vD1 --backtrack=30 virtual/perl-IO:0
emerge -vD1 --backtrack=30 perl-core/Time-Local:0
emerge -vD1 --backtrack=30 virtual/perl-Time-Local:0
emerge -vD1 --backtrack=30 perl-core/Module-CoreList:0
emerge -vD1 --backtrack=30 virtual/perl-Module-CoreList:0
emerge -vD1 --backtrack=30 perl-core/Digest-MD5:0
emerge -vD1 --backtrack=30 virtual/perl-Digest-MD5:0
emerge -vD1 --backtrack=30 perl-core/JSON-PP:0
emerge -vD1 --backtrack=30 virtual/perl-JSON-PP:0
emerge -vD1 --backtrack=30 perl-core/ExtUtils-ParseXS:0
emerge -vD1 --backtrack=30 virtual/perl-ExtUtils-ParseXS:0
emerge -vD1 --backtrack=30 perl-core/File-Temp:0
emerge -vD1 --backtrack=30 virtual/perl-File-Temp:0
emerge -vD1 --backtrack=30 perl-core/Params-Check:0
emerge -vD1 --backtrack=30 virtual/perl-Params-Check:0
emerge -vD1 --backtrack=30 perl-core/Module-Metadata:0
emerge -vD1 --backtrack=30 virtual/perl-Module-Metadata:0
emerge -vD1 --backtrack=30 perl-core/Sys-Syslog:0
emerge -vD1 --backtrack=30 virtual/perl-Sys-Syslog:0
emerge -vD1 --backtrack=30 perl-core/IO-Compress:0
emerge -vD1 --backtrack=30 virtual/perl-IO-Compress:0
emerge -vD1 --backtrack=30 perl-core/Test-Harness:0
emerge -vD1 --backtrack=30 virtual/perl-Test-Harness:0

That’s all there is to it. :-)

Can Linux cope with 24 Hours of Happy?

I enjoyed Pharrell Williams’ feel-good songs in ‘Despicable Me‘ and its sequel, ‘Despicable Me 2‘. ‘Happy‘, a very catchy ditty he wrote for the sequel, also features in the World’s first 24-hour-long music video, ‘24 Hours of Happy‘, shot in and around Los Angeles and released on 21 November last year. The song is played a total of 360 times over the duration of the video, each 4-minute take featuring a different person or persons dancing (improvised) along streets, in petrol stations, through Union Station, in a church, around a school, in a moving school bus, around a supermarket, in a bowling alley, and so on. Each 4-minute performance was filmed in one take using Steadicam, and the location at the end of each take segues into the next take. You see the sun rise; you see the bright sunlight of the morning and the warm sunlight of the afternoon; you see the sun set; you see the twinkling city lights at night. The concept is simple yet brilliant.

Clips from some of the takes were used to create the 4-minute official music video for ‘Happy’, so you can watch that on YouTube to get a flavour of the takes, although it does not do justice to the full video.

Williams appears in a different take every hour on the hour, and a few other takes have celebrity cameos, but the vast majority of the participants are unknown extras of all ages, races, shapes, sizes and looks. To quote Williams talking to the Los Angeles Times: “We wanted all humanity in there, not just the model-types you might expect.” Some are good dancers, others not so good. But they all have one thing in common: they’re having fun, so they look good. The joy is infectious, and I found myself watching far longer than I would have expected, having to return to the site again and again. Half the fun is watching the bystanders.

When you open the ’24 Hours of Happy’ site, the take that was in progress at the current time of day starts playing from the beginning. However, you can drag the pointer around the clock dial and watch any take from the 24-hour period. There are also buttons you can click on to jump between takes or to jump to each take featuring Williams. The yellow on-screen controls can be made to disappear by not moving the mouse pointer for 5 seconds.

Still from 24 Hours of Happy, showing on-screen controls

Still from 24 Hours of Happy, showing on-screen controls

The Web site is well-designed and fun to use, so I was not surprised it was voted ‘Site of the Month‘ and ‘Site of the Year Users’ Choice‘ by AWWWARDS, and voted ‘Site of the Month‘ and ‘Site of the Year‘ by TheFWA.

It’s impossible to list them all, but a few of my favourite takes are:

01:36  Very perky woman with ponytail.
05:28  Jogger who has to keep pulling his shorts up!
08:24  Woman on roller skates.
09:52  Very cute little girl.
09:56  Woman with some groovy moves.
10:40  Woman in Union Station. Some of the bystanders are particularly amusing.
11:16  Man with cast on foot.
11:20  Boy with an Afro.
11:36  Three groovy old ladies.
11:44  Chubby guy with style.
12:36  Woman with some groovy moves.
13:32  Dancing couple in pink.
14:20  Two cool guys in dinner jackets inside and outside Union Station.
15:00  Pharrell Williams in a church with a gospel choir.
19:04  Woman with a lizard puppet. The lizard does the lip-synching!
19:36  Guy on stilts.
23:40  Woman with LED hula hoop (love it!).

If you want to start viewing a take made at a specific time of day, you can append the time to the URL, like so:

http://24hoursofhappy.com/09h53am

Obviously I think ’24 Hours of Happy’ is fabulous, but why am I discussing it in a blog predominantly about Linux? Because Firefox 27.0.1 (32-bit) running in Windows 8.1 (64-bit) on my new Acer Aspire XC-600 micro-tower PC (dual-core Intel Pentium G2030 @ 3 GHz & 3 MB cache, 4 GB DDR3 RAM) handles ’24 Hours of Happy’ at 720p with ease, but the story is very different on my main laptop running 64-bit Gentoo Linux with KDE (quad-core Intel Core i7 720QM @ 933 MHz & 6 MB cache, 4 GB DDR3 RAM). Both machines are on my home network, connected to the Internet via high-bandwidth broadband (FTTC).

On my laptop, the latest available versions of Firefox (27.0) and Opera (12.16_p1860-r1) for Gentoo, both 64-bit, do not even complete loading the ’24 Hours of Happy’ site: the black progress bar at the bottom of the home page stops about 7/8th of the way across the page and the KDE Network Monitor widget shows there is no network activity. Clearing Firefox’s Web content cache or increasing the cache’s size to 1 GB make no difference. Konqueror 4.12.2 (configured to use the WebKit browser engine rather than the KHTML engine) loads the site and plays it quite well at 720p to start with, but eventually video becomes choppy and I notice a lot of spawned kio_http processes. The KDE Network Monitor widget shows a continuous 3600 Kib/s data stream, which does not stop when I exit Konqueror. Numerous kio_http processes are spawned and remain after I exit Konqueror, and the 3600 KiB/s activity on the network only ceases when I kill all the kio_http processes. The number of spawned kio_http processes increases if I drag the pointer around the clock to select different takes, and the page just displays ‘LOADING’ ad infinitum if I do this several times. To be fair, if I do this a lot in Firefox running in Windows 8.1, I can get Firefox to stall too. I thought I’d try a lightweight browser and installed NetSurf (3.0-r1), but that couldn’t even render the title on the home page, let alone begin to load the video.

So, does ’24 Hours of Happy’ play nicely in your Linux installation? If it does, what hardware, distribution, desktop environment, browser and quality (360p, 480p, 720p or 1080p) are you using?

KDE Connect – Link your Android device to your KDE desktop

KDE Connect app icon on my Samsung Galaxy Note II

KDE Connect app icon on my Samsung Galaxy Note II

KDE Connect is a nice tool that links your Android phone or tablet seamlessly via WiFi to KDE on your PC (the latter can be connected via WiFi or cable to the network). It allows your KDE desktop to receive notifications, files and media player commands from your Android device. The available KDE Connect plug-ins are:

Battery report
Periodically report battery status

Clipboard sync
Share the clipboard content

Multimedia remote controls
Control audio/video from your phone
(pause; first track; previous track; next track; last track; change volume)

Notification sync
Access your notification from other devices

Ping
Send and receive pings

Telephony notifier
Send notifications from SMS and calls

You will need to install the Android KDE Connect application on your Android device, and the Linux KDE Connect application on your PC.

Install the KDE Connect app on your Android device from the Google Play Store. You will then see the KDE Connect icon on the apps screen of your Android device.

For Gentoo users an ebuild for KDE Connect is available in the Gentoo KDE team’s testing overlay, so here are the instructions on how to install KDE Connect on your PC from there.

Firstly, mask the KDE overlay so that none of the packages in it interferes with the KDE software you installed from the main Portage tree:

# echo "*/*::kde" >> /etc/portage/package.mask

Then unmask the KDE Connect package in the KDE overlay:

# echo "kde-misc/kdeconnect" >> /etc/portage/package.unmask

N.B. If /etc/portage/package.mask is a directory rather than a file (either is possible) in your installation, and if /etc/portage/package.unmask is a directory rather than a file (either is possible) in your installation, use the following commands instead of the above two commands:

# echo "*/*::kde" > /etc/portage/package.mask/kde_overlay
# echo "kde-misc/kdeconnect" > /etc/portage/package.unmask/kdeconnect

Now add the KDE overlay and merge the package:

# layman -a kde
# emerge kdeconnect

If a firewall is running on your PC, you will need to configure it to allow tcp and udp traffic via a specific range of ports (1714 to 1764). I have UFW running on my main laptop, so in my case I used the following commands:

# ufw allow proto tcp to any port 1714:1764
# ufw allow proto udp to any port 1714:1764

The rules should look like this:

# ufw status verbose | grep 1714
1714:1764/tcp ALLOW IN Anywhere
1714:1764/udp ALLOW IN Anywhere
1714:1764/tcp ALLOW IN Anywhere (v6)
1714:1764/udp ALLOW IN Anywhere (v6)

If you have the KConfig Module kcm_ufw installed on your PC then you can instead use System Settings > Firewall to add the UFW rules via the KDE GUI.

By the way, to check which KConfig modules are installed on your PC you can use the following command under your user account:

$ kcmshell4 --list

Using KDE Connect is not difficult, so I will leave you to play with it. Obviously make sure WiFi is enabled on your Android device, and that it and your PC are connected to the same network. Tap on the KDE Connect icon on your Android device to launch the app, and you should see your PC’s name listed under CONNECTED DEVICES. Tap on the PC name and you should see the following screen:

KDE Connect screen

KDE Connect screen

If you tap on ‘Send ping’, the KDE Notification widget on the KDE System Tray should pop up a notification.

You can see what KDE Connect plug-ins are available, and select/deselect them:

KDE Connect plugins

KDE Connect plugins

KDE Connect also enables you to use your Android device as a remote control for media players running on your PC. When you launch a media player in KDE its name will appear in a list of selectable players in KDE Connect, and the name of the track currently playing will also be displayed:

KDE Connect - Remote control

KDE Connect - Remote control

When you select a file on your Android device and tap the Share icon, KDE Connect will be one of the options displayed on the ‘Share via’ menu. This is a handy way to send files from your Android device to your PC. The KDE Notification widget on your PC will notify you when the file has been transferred to ~/Desktop/ on your PC:

KDE on your PC notifies you when a file has been sent via KDE Connect

KDE on your PC notifies you a file has been sent via KDE Connect

You should also get notifications on your KDE desktop when someone phones or sends you an SMS.

Kudos and many thanks to the people responsible for KDE Connect. KDE is already a superb desktop environment, and with the addition of KDE Connect it is better still.

Dropbox revisited

In a previous post I explained how I installed Kfilebox, an unofficial KDE front-end for Dropbox. However, development of Kfilebox appears to have stopped, as the original author posted the following recently on a blog:

“I have stopped working on kfilebox after some updates in dropbox. Shortly: there is no way to get recent changed files, no more access to config options, cant configure it.”

Nevertheless I continued using Kfilebox. However, after a few days the Kfilebox icon stopped appearing in the KDE System Tray, and clicking on ‘Show hidden icons’ > ‘Kfilebox’ on the Panel displayed “The Dropbox daemon isn’t running” in the pop-up menu. Also, if I clicked on the hidden Kfilebox icon and selected ‘Preferences…’ the Dropbox folder field was empty and I had to keep re-entering the location of the Dropbox folder. So I decided to uninstall Kfilebox and try using Dropbox directly with KDE. I performed the steps listed below.

  1. Uninstall Kfilebox:

    # emerge -C kfilebox

  2. Remove any associated directories and files that might be left over:

    # rm -rf /home/fitzcarraldo/.dropbox
    # rm -rf /home/fitzcarraldo/.dropbox-dist
    # rm /home/fitzcarraldo/.kde4/share/config/kfileboxrc

  3. Install Dropbox:

    # emerge dropbox

  4. Do not edit /etc/conf.d/dropbox and do not configure Gentoo to launch the Dropbox daemon at start-up (i.e. do not add /etc/init.d/dropbox to the default runlevel). Instead configure KDE to launch the daemon when logging-in to KDE:
    1. Kickoff > System Settings > Startup and Shutdown
    2. Click on ‘Autostart’ in the left pane.
    3. Click on the ‘Add Script…’ button on the right side of the window.
    4. Enter the location of the Dropbox daemon in the box in the pop-up window. I entered “/opt/dropbox/dropboxd” (without the quotes) in the box and clicked ‘OK’.
  5. Run Dropbox for the first time and configure the local installation:
    1. Open a Dolphin window and browse to the directory containing the daemon (/opt/dropbox/) and double-click on dropboxd to launch the daemon.
    2. The Dropbox set-up window will pop-up and it should be obvious what to do from there onwards. As I already had a Dropbox account I selected ‘I already have a Dropbox account’ and clicked ‘Next’, I then entered my e-mail address, my Dropbox password and my computer’s name in the boxes and clicked ‘Next’. I left the default free 2 GB option selected and clicked ‘Next’. I left the default set-up ‘Typical’ selected and clicked ‘Install’. I read the introductory information displayed in the next couple of windows and clicked ‘Next’. I clicked ‘Finish’ in the final ‘That’s it!’ window.
  6. A Dropbox icon then appears in the System Tray on the Panel and synchronises with the Dropbox directory on the remote Dropbox server.

Now if I click on the Dropbox icon in the System Tray, the Dropbox directory window pops up. If I right-click on the icon in the System Tray, a menu pops-up with the expected Dropbox options.

So there was no need to use Kfilebox after all, as using the Dropbox daemon directly is just as user-friendly.

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