Hello Kulbir,
I saw your article about installing Gitweb and i decided to send this shameless self-promotion. Maybe you could try my open-source project, GitList https://github.com/klaussilveira/gitlist

I’m looking for beta testers and supporters. FLOSS.

So, I thought I’ll just give it a try. Today, I got it working and was blown away by the amazing interface! It’s almost like a super simplified version of GitHub. I was so impressed that I immediately setup a demo website at git.gofedora.com for others to look at and fall in love :-)Another good thing about GitList is that it’s very simple to setup. Below is a step by step process to install and configure GitList to expose your public Git repositories to the internet.

What You Need?

You need the following packages before you can setup GitList.

• Apache (with mod_rewrite)
• Git
• PHP

Installing Required Packages

Most modern operating systems have the above mentioned packages installed by default. Even if you don’t have them already, you can use your OS package manager to install them quickly. To install on Fedora/RedHat/CentOS using yum, use the following command

[root@whitemagnet.com ~]$ yum install php git httpd

For Ubuntu/Debian, use the following command

[root@whitemagnet.com ~]$ apt-get install php git apache2

Assumptions

For setting up GitList, I am assuming the following directory paths and other variables.

• Path to public Git repositories : /home/saini/code/public/
• Path to Apache document root : /var/www/html/
• Path to Git executable : /usr/bin/git (Use “which git” to find out for your OS)
• Web URL for browsing git repos : mygit.example.com/gitlist/

Installing and Configuring GitList

Follow the following simple steps to install and configure GitList.

Step 1 : Clone GitList repository from GitHub to /var/www/html/gitlist/

[root@whitemagnet.com ~]$ cd /var/www/html/
[root@whitemagnet.com html]$ git clone git://github.com/klaussilveira/gitlist.git gitlist

Step 2 : Create cache directory and make it globally writable

[root@whitemagnet.com ~]$ cd gitlist
[root@whitemagnet.com gitlist]$ mkdir cache
[root@whitemagnet.com gitlist]$ chmod 777 cache

Step 3 : Configure GitList using config.ini

Open the config.ini (in gitlist directory) and set the option properly. Refer the sample shown below.

[git]
client = '/usr/bin/git' ; Your git executable path
repositories = '/home/saini/code/public/' ; Path to your repositories (with ending slash)

[app]
baseurl = 'http://mygit.exmaple.com/gitlist' ; Base URL of the application (without ending slash)

Step 4 : Make sure your Apache can read your .htaccess file in gitlist directory

GitList utilizes Apache’s mod_rewrite module to  provide nice URLs. Make sure your Apache is configured to read .htaccess from the gitlist directory. Open your Apache config file (generally located at /etc/httpd/conf/httpd.conf or /etc/apache2/ports.conf) and look for the following

In this segment, make sure you have AllowOverride All as below.

# Other lines omitted
AllowOverride All
# Other lines omitted

Step 5 : Reload or restart Apache daemon if needed

[root@whitemagnet.com ~]$ apachctl -k restart (or apache2ctl -k restart for Ubuntu/Debian)

Step 6 : Get some sample repositories in your public repo directory

Get some sample repositories in your public repo directory from GitHub.

[root@whitemagnet.com ~]$ cd /home/saini/code/public/
[root@whitemagnet.com ~]$ git clone git://github.com/kulbirsaini/intelligentmirror.git
[root@whitemagnet.com ~]$ git clone git://github.com/kulbirsaini/Railscasts-Sync.git
[root@whitemagnet.com ~]$ git clone git://github.com/zilkey/active_hash.git

That’s all! Now, go to http://mygit.example.com/gitlist to discover your public git repos via a cool web interface! Leave a comment if you face any issues.

Checkout the links below:

• Table of contents
• Sample Chapter : Running Squid
• Amazon link

I tried a lot of repos for CentOS including RPM Fusion, RPM Forge, EPEL etc., but none of them could provide even PHP 5.2. In some corner of my mind, I had a faint idea of Remi Collet publishing updates about Remi repository. Did a quick google search and found out that PHP 5.3 is actually available in the repository

So, if you are really in need of PHP5.3 on your CentOS/RHEL 5.1 or lesser, head over to Repository Configuration Page and follow the instructions.

Note: The repository is not enabled on install (enabled=0). You need to enable it in /etc/yum.repos.d/remi.repo.

Once installed and enabled, you can update PHP, MySQL from remi repository using the following command

[root@fedora ~]$ yum update php php-* mysql-*

Warning: Drupal is still not totally compatible with PHP5.3 and if you run Drupal sites, be sure to investigate things before upgrading.

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Install Mail Notification

Installing something can’t be simpler. Just use the following command as root

[root@fedora ~]$ yum install mail-notification

Configuring mail-notification is very simple. Its as easy as it can get but there are tricks for special cases like Gmail for  Google Apps hosted websites.

Launch Mail Notification

Mail notification loses a point here. It doesn’t show up in any of the menus. You have to launch it from command line. You can launch mail-notification from System -> Preferences -> Mail Notification (Thanks mbooth for correcting). Or use the following command as normal user to launch mail notification

[saini@fedora ~]$ mail-notification -p

Configure Status Icon Behaviour

On mail notification properties windows, select Status Icon tab and choose the appropriate behaviour.

New Message Popup Settings

Now go to Message Popups tab, and select appropriate options. If you don’t enable popups, using mail notification doesn’t really make sense (though none can prevent you from doing so ). Keeping popus stacked is good because it shows you all messages in case you get more than one new mails in an interval. Also, you can configure the expiration time for the popups.

Add New Mailbox

Now select General tab and click of Add button. Mail-notification supports checking new mails from Evolution, Gmail, Yahoo! Mail, Windows Live Mail, any IMAP and POP3 Server and moreover your system mailbox Select Gmail for mailbox type. Enter username and password for Gmail account.

Now move over to Details tab and set delay between checking mails. I keep it 10 seconds

Add a Google Apps Hosted Email Account

This is totally optional Now we’ll add a Google Apps hosted account. This is a bit tricky. For mailbox type, you’ll have to select Gmail. For username, you’ll have to provide your email address.

Also, the mailbox name has to be modified in this case to make things work. Move over to Details tab and change mailbox name to your email address.

Add a new IMAP mailbox (Gmail)

This is totally optional Keep mailbox type as IMAP. IMAP Server has to be imap.gmail.com . Username and password are same as Gmail Account.

Note: For this mailbox to work, you’ll have to enable IMAP in settings tab in Gmail.

Now move over to Connection tab. Connection for Gmail IMAP has to be SSL enabled. So, select “SSL/TLS on separate port” and make sure the port number is 993.

Well thats all you need to do for configuring things for getting new mail notifications lightning fast Now sit back and relax until someone sends you a mail

The only major disadvantage that I found with mail-notification is that it doesn’t stay in notification area all the time. It appears only when there is a new mail.

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Hardware Used

Graphics Card: ATI Radeon HD 3200 (256MB, onboard)
Monitor 0: ViewSonic VG1930WM 1440×900 (19″ LCD, Connected via DVI port)
Monitor 1: Samsung SyncMaster 793S 1280×1024 (17″ CRT, Connected via VGA port)

Types of Dual Display

• Mirror: Both screens have same content, identical refresh rate and resolution.
• Clone: Both screens have same content but refresh rates and resolutions can be different.
• Horizontal: Both screens can have different content, refresh rates and resolution. Screen 1 is left or right of Screen2.
• Vertical: Same as horizontal. The only difference is that Screen1 is above or below Screen2.

In this post, we are interested in Horizontal setup with xinerama on. This way we can have two desktops allowing full screen modes on both of them and allowing us to drag and drop windows from one screen to the other.

Install ATI Drivers

If you don’t have ATI drivers installed already, follow this How To: Install ATI Catalyst (fglrx) Drivers on Fedora 11 (works for any version of ATI Catalyst drivers).

Generate xorg.conf file

If you don’t see the xorg.conf file at /etc/X11/xorg.conf, then you need to generate it to proceed to next step. Use the following command as root to generate one

[root@fedora ~]$ Xorg -configure

This command will generate the default xorg.conf file at /root/xorg.conf.new. Copy it to /etc/X11/xorg.conf.

[root@fedora ~]$ cp /root/xorg.conf.new /etc/X11/xorg.conf

Backup xorg.conf file

Backup your original xorg.conf file so that you can restore it in case the configuration doesn’t work the way you expected.

[root@fedora ~]$ cp /etc/X11/xorg.conf /etc/X11/xorg.conf.backup

Generate Configuration for Dual Display

Now we are ready to generate the configuration for dual display. Use the following command with appropriate arguments (in accordance with your hardware configuration)

# --screen-layout will place second screen on left of your first screen. Other possible values are right,above,below.
# --xinerama=on option enables you to have two different desktops and one of them being passive.
# You can drag and drop windows from one desktop to the other. Task bars appear only on one of the desktops.
[root@fedora ~]$ aticonfig --initial=dual-head --screen-layout=left --xinerama=on
# --resolution=_screen_number_,widthxheight
[root@fedora ~]$ aticonfig --resolution=0,1440x900 --resolution=1,1280x1024
# Set horizontal sync and vertical refresh rates for both monitors.
[root@fedora ~]$ aticonfig --hsync=0,30-60 --hsync=1,30-60 --vrefresh=0,30-60 --vrefresh=1,30-60

You can download my xorg.conf file via this link.

Reboot or Logout and Login Again

If you just setup your ATI drivers and configured the dual display, you need to reboot so that fglrx module can be loaded properly. If you rebooted after setting up the drivers, just logout and login again to checkout your dual display If everything works fine, say thanks to me and if not blame ATI

Adjust DPI for Normal Font Size

I faced a problem with my font sizes being too big while using xinerama. It was easy to fix by adjusting DPI. Go to System -> Preferences -> Appearance. Go to Fonts tab. Click Details located near the bottom right corner. On that window, try descreasing the “Dots Per Inch” value. Mine worked fine with 85 DPI.

Below is an image of my dual display setup. Click to enlarge.

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Install GNOME GMail Notifier

You can download and install it from GNOME GMail notifier home page or just use yum

[root@fedora ~]$ yum install gnome-gmail-notifier

Launch Gmail Notifier

If installation was successful, go to Applications -> Internet -> Gmail Notifier.

Open Preferences

Right click on Email icon in taskbar and click Preferences.

Select Preferences

Set inbox update time to 1 minute. Check display notifications for new messages and errors. Also select a sound to play for new mails.

Add GMail Account

Click Add on preferences window and add your GMail account.

Add Mail Account (Google Apps) (Optional)

If you don’t know what Google Apps is, leave this step. If you do know, then add your mail account.

Check Mail

If you can’t wait for 1 minutes to see GMail Notifier in action, just right click on email icon in taskbar and click Check Mail.

Mail Notifications

Whenever you get a new mail, you’ll have bubble like the one in image below and a sound will also be played.

Enjoy the notifications

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Download Twython

You can download latest version of twython from twython page on github. You can either clone using git (if you have git installed) or can click the download button.

Install Twython

Once you are done with extracting the downloaded tar file. Change directory to twython and run these command as root.

[root@fedora ~]$ git clone git://github.com/ryanmcgrath/twython.git
[root@fedora ~]$ cd twython/dist
[root@fedora dist]$ tar -xvzf twython-0.8.tar.gz
[root@fedora dist]$ cd twython-0.8/
[root@fedora dist]$ python setup.py build
[root@fedora dist]$ python setup.py install

Use Twython from Python Interpreter

Below is a direct copy paste lines from my interpreter. See how things are working (learning by doing).

[saini@bordeaux ~]$ python
Python 2.6 (r26:66714, Mar 17 2009, 11:44:21) 
[GCC 4.4.0 20090313 (Red Hat 4.4.0-0.26)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> # first of all, import twython module
>>> import twython
>>> # Authenticate your twitter account with your twitter username
... # and password with twitter.setup method.
>>> client = twython.setup('Basic','myusername','mypassword')
>>> client.authenticated
True
>>> #Lets update our current status on twitter with some cool message.
>>> client.updateStatus('Testing #twython. The coolest #TwitterAPI :)')
>>> # Now go and check your current status on twitter. Surprised!!!
>>> # Get your or anyone's followers
>>> client.getFollowersIDs(screen_name='gofedora')
>>> # Output truncated.
>>> # Get help for any function.
>>> print client.createFriendship.__doc__
createFriendship(id = None, user_id = None, screen_name = None, follow = "false")

	Allows the authenticating users to follow the user specified in the ID parameter.
	Returns the befriended user in the requested format when successful. Returns a
	string describing the failure condition when unsuccessful. If you are already
	friends with the user an HTTP 403 will be returned.

	Parameters:
		** Note: One of the following is required. (id, user_id, screen_name)
		id - Required. The ID or screen name of the user to befriend.
		user_id - Required. Specfies the ID of the user to befriend. Helpful for disambiguating when a valid user ID is also a valid screen name. 
		screen_name - Required. Specfies the screen name of the user to befriend. Helpful for disambiguating when a valid screen name is also a user ID. 
		follow - Optional. Enable notifications for the target user in addition to becoming friends. 
>>> 

So now you are ready to do wonders with twython. Write your own code and blog/brag about it

A few days back I was designing the new logo for Videocache in Inkscape. After finishing the design, I saved the svg file carefully. And deleted other images which I embedded in the logo. A few moments later I realized that I just screwed up myself by deleting all those files as the svg file is now good for nothing.

I searched a lot on recovering files in Linux but in vain. Then a friend (bitgeek) told me about Photorec. I managed to recover all the files using photorec. I thought it would be a good idea to let others know and spread a good word about Photorec. Below is a step by step howto on using Photorec to recover your files.

What is Photorec?

From Photorec website,

PhotoRec is file data recovery software designed to recover lost files including video, documents and archives from Hard Disks and CDRom and lost pictures (thus, its ‘Photo Recovery’ name) from digital camera memory. PhotoRec ignores the filesystem and goes after the underlying data, so it will still work even if your media’s filesystem has been severely damaged or re-formatted.

For This HowTo

Lets say I had a file download_arrow.png in /home/saini/Desktop which I have removed accidentally. Login as root and create a directory recover which will be used to store all the recovered files.

Install testdisk/PhotoRec

Photorec comes as a part of testdisk package in Fedora (I hope its same for other distributions as well). Use yum to install testdisk.

[root@fedora-tips ~]$ yum install testdisk

Launch Photorec

Once you are done with installation. Open a terminal and launch photorec (as root).

[root@fedora-tips recover]$ photorec

Select Hard Disk

If you have more than one hard disk in your system, select the one from which you have deleted the file(s).

Select Partition Type

If your hard disk has Linux partitions, then select [Intel].

Select Filetype Option

Move to [File Opt] and press enter. Here you can disable all file types by pressing ‘s’ . Use space to toggle the check button. Now since we removed a png file, we are going to check only png file type.

Select Options

Photorec also has a list of different options. Under normal circumstances you don’t need to modify them

Select Partition

Move the selector to the partition from which you have removed the file. Then press enter on search.

Select Filesystem Type

If you are using Linux, its going to be ext2/ext3/ext4. So the default selection is file.

Select Space for Analysis

Select free if you didn’t write to that partition after removing the particular file otherwise select whole.

Select a Directory to Recover Files

Now select the path where the recovered files will be stored. Then press ‘Y’.

Recovery Progress

Photorec will show how many files it has recovered.

All recovered file will be stored in the directory selected above. Open them in a file browser and you’ll get the removed file there. I hope this howto will help you recovering files you accidentally delete

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Following the suggestions in comments on my last post about ATI Catalyst (fglrx), I tried to reinstall ATI drivers version 9.8 and finally it worked. I thought of noting down the the process in few simple steps which anyone can follow and get the drivers working on Fedora 11 with latest kernel versions.

Step 1 : Update Kernel, Install kernel-devel

Huge thanks to Richard Lloyd and mxyzptlk2063 for pointing this out.
This step is not necessary. You may like to stick to the kernel version you already have. In case you want the latest kernel, just use yum to get the latest kernel.

Note: Do not forget to update the kernel-devel package as well as its needed to compile the fglrx kernel module.

DONT UPDATE THE KERNEL. Instead stick to whatever kernel version you have. If you have 2.6.30.*, you are unlucky Get a kernel version 2.6.29.* and install the kernel-devel for the same.

With Catalyst Driver version 9.10 you can update kernel to latest version before installing the Drivers.

[root@fedora ~]$ yum update kernel
[root@fedora ~]$ yum install kernel-devel

Step 2 : Download Drivers

Download the ATI Catalyst 9.8 Proprietary Linux x86 Display Driver from ATI/AMD website.

Step 3 : Install Drivers

Install the drivers that you have downloaded using the following command.

[root@fedora ~]$ bash ./ati-driver-installer-9-8-x86.x86_64.run

Step 4 : Check Installation Result

Check the /usr/share/ati/fglrx-install.log file for result of installation. If there are no errors, proceed to the next step.

Note: You may see lines like this at the end of file

You must change your working directory to /lib/modules/fglrx
and then call ./make_install.sh in order to install the built module.
– recreating module dependency list
– trying a sample load of the kernel modules
done.

You can ignore these lines happily if they don’t contain any error message. You don’t really need to execute the command mentioned in those lines.

Step 5 : Blacklist radeon and radeonhd kernel modules

Add these lines to /etc/modprobe.d/blacklist.conf.

blacklist radeon
blacklist radeonhd

Step 6 : Generate initial Xorg configuration file

Note: This step is optional with Catalyst Driver version 9.10, but it wont harm even if you execute this.

You have to generate the initial xorg.conf file which will use fglrx as display device.

[root@fedora ~]$ aticonfig --initial

Step 7 : Modify xorg.conf

Open your /etc/X11/xorg.conf file and add the following line to “Device” section (the one with fglrx as driver)

Option "SWCursor" "true"

Step 8 : Reboot

Reboot your machine. And you’ll have the latest ATI Catalyst drivers working on your Fedora 11

Step 9 : Testing

You can test your newly installed drivers and get the performance benchmarks for your graphics card using the commands below.

[saini@fedora ~]$ glxgears
[saini@fedora ~]$ fgl_glxgears

My graphics card is ATI Radeon HD 3200 (256MB, Onboard) and I get 1500FPS with glxgears and 300FPS with fgl_glxgears.

In case you messup things somewhere, you can uninstall the fglrx drivers using the following command

[root@fedora ~]$ /usr/share/ati/fglrx-uninstall.sh

Step 1

Install needed packages

[root@fedora ~]$ yum install broadcom-wl  wl-kmod

Step 2

Once the packages are installed successfully, reboot your laptop.

Step 3

Use the following command

[root@fedora ~]$ system-config-network

And add a new wireless device wlan0 or whatever you want by filling the required fields properly. If you want the device to be managed by NetworkManager, you can do so while editing the device you just added.

Activate the device. And you are on wifi

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