Install Adobe® Flash® Player “Square” on Linux

Adobe® Flash® Player “Square” is a preview release that enables native 64-bit support on Linux, Mac OS, and Windows operating systems, as well as enhanced support for Microsoft Internet Explorer 9 beta.

I’m glad to see Adobe has is finally embracing the way it should the 64 bit Platform. This release is a milestone as far as i know, as is the first one that’s released in the same time for win, mac and linux. I’ve put together a small tutorial on
how to install adobe flash player square on linux:

#!/bin/bash
# Script  created by
# Romeo-Adrian Cioaba [email protected]

echo "Stopping any Firefox that might be running"
sudo killall -9 firefox

echo "Removing any other flash plugin previously installed:"
sudo apt-get remove -y --purge flashplugin-nonfree gnash gnash-common mozilla-plugin-gnash swfdec-mozilla libflashsupport nspluginwrapper
sudo rm -f /usr/lib/mozilla/plugins/*flash*
sudo rm -f ~/.mozilla/plugins/*flash*
sudo rm -f /usr/lib/firefox/plugins/*flash*
sudo rm -f /usr/lib/firefox-addons/plugins/*flash*
sudo rm -rfd /usr/lib/nspluginwrapper

echo "Installing Flash Player Square"
cd ~
# 64 bit
wget http://download.macromedia.com/pub/labs/flashplayer10/flashplayer_square_p1_64bit_linux_091510.tar.gz
tar zxvf flashplayer_square_p1_64bit_linux_091510.tar.gz
# 32 bit
# wget http://download.macromedia.com/pub/labs/flashplayer10/flashplayer_square_p1_32bit_linux_091510.tar.gz
# tar zxvf flashplayer_square_p1_32bit_linux_091510.tar.gz
sudo cp libflashplayer.so /usr/lib/mozilla/plugins/

echo "Linking the libraries so Firefox and apps depending on XULRunner (vuze, liferea, rsswol) can find it."
sudo ln -sf /usr/lib/mozilla/plugins/libflashplayer.so /usr/lib/firefox-addons/plugins/
sudo ln -sf /usr/lib/mozilla/plugins/libflashplayer.so  /usr/lib/xulrunner-addons/plugins/

# now doing some cleaning up:
sudo rm -rf libflashplayer.so
sudo rm -rf flashplayer_square_p1_64bit_linux_091510.tar.gz

To check if the install did it’s job, you need to check about:plugins in your address bar. It should show you this for flash player:

Shockwave Flash

File: libflashplayer.so
Version:
Shockwave Flash 10.2 d161
MIME Type Description Suffixes Enabled
application/x-shockwave-flash Shockwave Flash swf Yes
application/futuresplash FutureSplash Player spl Yes

As usual, I’ve wrapped everything mentioned before into a script to easily install flash player square on Linux

If this version doesn’t work out that well for you, you can still check my other tutorial on how to install native 64bit flash player on Linux
Happy browsing!

CLI Disk Usage

Modern Linux systems have plenty of tools for both Gnome and Kde to analyze the disk space. But if you log into a server via SSH or similar, you’re out of luck. You need a tool for Cli Disk Usage analytics. That tool is ncdu.

You can install it easy:

sudo apt-get install ncdu

Issuing ncdu inside the folder you want to check will open a cool ncurses interface, really easy to use 🙂

Converting disc images to another format on Linux

While this information is available all over the net, i find myself losing enough time now and again trying to figure out how to convert a disk image to iso or something useful for that matter. So i decided to put together a small tutorial on converting disk images to another format on Linux, so i can easily access it whenever i need it.

The most popular disk image formats i’ve had to deal with are: iso (which Ubuntu handles by default perfectly), CloneCD/IMG (used by CloneCD), CUE/BIN, MDF (created by Alcohol 120%), NRG (Nero images) and last but not least DMG (format used mainly by Apple).

Since Linux handles very well .iso files, the idea is to convert any of the image types listed into iso and then the job is easy. For all of the formats there are tools to do just that. You can install them as follows:

sudo apt-get install ccd2iso bchunk mdf2iso nrg2iso dmg2img

Example usage:

# ccd
ccd2iso /path/to/example.img /path/to/example.iso
# bin/cue
bchunk /path/to/example.bin /path/to/example.cue /path/to/example.iso 
# mdf
mdf2iso /path/to/example.mdf /path/to/example.iso 
# nrg
nrg2iso /path/to/example.nrg /path/to/example.iso 
# dmg
dmg2img filename.dmg

Some of those formats can be also mounted using the CLI:

# ccd/img
sudo mount -o loop example.img /media/example 
# nrg 
sudo mount -o loop,offset=307200 /path/to/example.nrg /media/example 
# dmg
dmg2img /path/to/example.dmg /path/to/example.img 
sudo modprobe hfsplus
sudo mount -t hfsplus -o loop example.img /media/example

Setting up Xdebug with Zend Server on Linux

Since our team work on different operating system, we switched for custom apache/php/mysql installs to Zend Server. Before everyone was using something different (the guys on windows were using XAMP, WAMP, on ubuntu i was using the packages in the repo and on the server we’re using apache from cPanel) and applications were behaving a differently according to the default settings for all those platforms.

So we decided to install Zend Server CE as it has more or less the same settings over different platforms. I’ve had some bad experiences installing ZSCE on a system that already had apache installed via apt, but after a clear install of Karmic, ZF was running like a charm. The install process described in the online documentation works great.

After install is done, make sure to symlink php, pecl, pear and phpize so you can access them system wide:

sudo ln -s /usr/local/zend/bin/zendctl.sh /usr/sbin/zendctl
sudo ln -s /usr/local/zend/bin/pear /usr/sbin/pear
sudo ln -s /usr/local/zend/bin/pecl /usr/sbin/pecl
sudo ln -s /usr/local/zend/bin/php /usr/sbin/php
sudo ln -s /usr/local/zend/bin/phpize /usr/sbin/phpize

At this point you should be able to run php -i in terminal and the phpinfo will be displayed.

Next step is to install xdebug via pecl by running:

sudo pecl install xdebug

If all went well you should have the xdebug library located at /usr/local/zend/lib/php_extensions/xdebug.so . If you don’t have it there, then something went wrong and you should NOT continue reading. This issue must be sorted first.

Next you need to comment out the 1st line of /usr/local/zend/etc/conf.d/debugger.ini so it looks like this:

#open editor
gksu gedit /usr/local/zend/etc/conf.d/debugger.ini

# this is how the 1st two lines should look afterwards
; register the extension to be loaded by Zend Extension Manager
;zend_extension_manager.dir.debugger=/usr/local/zend/lib/debugger

Xdebug needs to be loaded before Zend Extension Manager, that’s why you need to add the following line just on top of the /usr/local/zend/etc/ext.d/extension_manager.ini

#open the editor
gksu gedit /usr/local/zend/etc/ext.d/extension_manager.ini

#add this line on 1st line: 
zend_extension=/usr/local/zend/lib/php_extensions/xdebug.so

#save the file

Restart zend server by running:

sudo /etc/init.d/zend-server restart

You can check if xdebug is working like so:

php -i |grep xdebug

The output should be something similar to this:

xdebug
xdebug support => enabled
xdebug.auto_trace => Off => Off
xdebug.collect_includes => On => On
xdebug.collect_params => 0 => 0
xdebug.collect_return => Off => Off
xdebug.collect_vars => Off => Off
xdebug.default_enable => On => On
xdebug.dump.COOKIE => no value => no value
xdebug.dump.ENV => no value => no value
xdebug.dump.FILES => no value => no value
xdebug.dump.GET => no value => no value
xdebug.dump.POST => no value => no value
xdebug.dump.REQUEST => no value => no value
xdebug.dump.SERVER => no value => no value
xdebug.dump.SESSION => no value => no value
xdebug.dump_globals => On => On
xdebug.dump_once => On => On
xdebug.dump_undefined => Off => Off
xdebug.extended_info => On => On
xdebug.idekey => mimir => no value
xdebug.manual_url => http://www.php.net => http://www.php.net
xdebug.max_nesting_level => 100 => 100
xdebug.profiler_aggregate => Off => Off
xdebug.profiler_append => Off => Off
xdebug.profiler_enable => Off => Off
xdebug.profiler_enable_trigger => Off => Off
xdebug.profiler_output_dir => /tmp => /tmp
xdebug.profiler_output_name => cachegrind.out.%p => cachegrind.out.%p
xdebug.remote_autostart => Off => Off
xdebug.remote_enable => Off => Off
xdebug.remote_handler => dbgp => dbgp
xdebug.remote_host => localhost => localhost
xdebug.remote_log => no value => no value
xdebug.remote_mode => req => req
xdebug.remote_port => 9000 => 9000
xdebug.show_exception_trace => Off => Off
xdebug.show_local_vars => Off => Off
xdebug.show_mem_delta => Off => Off
xdebug.trace_format => 0 => 0
xdebug.trace_options => 0 => 0
xdebug.trace_output_dir => /tmp => /tmp
xdebug.trace_output_name => trace.%c => trace.%c
xdebug.var_display_max_children => 128 => 128
xdebug.var_display_max_data => 512 => 512
xdebug.var_display_max_depth => 3 => 3

Note the xdebug support => enabled on line 2.

Hope that helps 🙂

Remove .svn folders recursively

I know that you have to use svn export in order to get a copy of the repo without the .svn folders inside, but sometimes you have to work with what you have, a checkout of a repo with .svn folders. And you want them removed.

After googling a bit i found a great way to recursively remove .svn folders. Just type the following while in the root of your checkout:

rm -rf `find . -type d -name .svn`

This tip was found on http://www.anyexample.com/linux_bsd/bash/recursively_delete__svn_directories.xml

Enable ls color support

By default i like to use the Green on Black color scheme with my terminals. When i enable the theme though, ls loses somehow the ability to show files in colors. The trick to enable the feature is simple. One just has to run ls like this:

ls --color=auto

Unfortunately this won’t stick, and it’a a bit of a drag to always add the –color=auto part. To solve this, one has to create an alias to ls to point to ls –color=auto. You can do this by adding the following to ~/.bashrc

# enable color support of ls and also add handy aliases
if [ "$TERM" != "dumb" ]; then
    eval "`dircolors -b`"
    alias ls='ls --color=auto'
fi

Tada!

Ailurus project

I’ve been contacted a few days ago by Homer Xing from Ailurus project.

He’s notified me about the addition of the script to install native flash player 64bit on ubuntu in the Ailurus project. I was thrilled. Since then Homer even built a version of the script to work on Fedora (which is now on this site also available) and we got in touch over IM.

I think Ailurus is an amazing project. Hardcore Linux users might not see why it’s important to have projects like these, but someone new to linux will appreciate it. I can’t stress enough how hard the Linux world seems to old windows users. It’s not a matter of Linux being hard to learn, but more of windows being hard to forget. With tools like Ailurus that make installing applications a snap, i think the transition is made much easier.

Looking forward for future releases!

SVN Ignore all files inside a folder

If you want to ignore certain file types inside a folder on SVN it’s pretty easy:

svn propset svn:ignore "*.tgz" backup

It’s a bit more complicated if you want to ignore everything inside a folder (be it files or folders). If you have a structure as the following:

/public/media
/public/media/member
/public/media/member/artist
/public/media/member/fan
/public/media/member/label

and you want to ignore everything inside public/media, just do:

svn propset svn:ignore "*" public/media/

Video working with Logitech QuickCam Communicate STX on Linux 64bit

I have a 046d:08d7 Logitech, Inc. QuickCam Communicate STX that works perfectly well with all the native linux applications (ekiga, cheese, empathy) and even with the Flash Player powered TokBox, but it does not work with Skype.

After a bit of digging I’ve found out how to make Skype detect the video input from my Webcam. The secret is to preload the v4l1compat.so library as shown on the Ubuntu Wiki:

bash -c 'LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so skype'

That does the trick for 32bit systems, and since there isn’t a native Skype version for 64bit

[email protected]:~$ file /usr/bin/skype 
/usr/bin/skype: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.8, stripped

we need to tell skype to preload the 32bit version of the library like so:

bash -c 'LD_PRELOAD=/usr/lib32/libv4l/v4l1compat.so skype'

Now video works perfectly using Skype 2.1.0.47 under Ubuntu 9.10 64bit

Chmod only files or chmod only folders

I moved the blog the a new server and i realised that all the permissions got screwed up on the process. All files and folders were having chmod 777, and that’s not exactly ideal. After digging a bit on google on how to chmod only files or chmod only folders, i came up with this:

1. Recursive chmod only files within this folder:
find . -type f -exec chmod 0600 {} ;

2. Recursive chmod only folders within this folder:
find . -type d -exec chmod 0755 {} ;

Hope this helps!