Web-CVS-Tools is now release under GNU GPLv3. Project migrated to github.com, so now you can participate in development.

Web-CVS-Tools is a bunch of script written in Perl to automate and make easier web development using CVS. You can read about the intended web development team work flow in my earlier article, which can be found here.

To make some changes to source code just run:

git clone git://github.com/alexamiryan/Web-CVS-Tools.git

Web-CVS-Tools on github – http://github.com/alexamiryan/Web-CVS-Tools

Have fun!

I’ve just installed started using VirtualBox on my Fedora 11 x86_64 and it works just perfectly. I’ve migrated from VMWare when it figured out that it is unable to work with latest kernel version. So I need to start some virtual machines in the background with system startup. I’ve made a lot of googling and found some dirty scripts that were not meeting my criterias. I’ve decided to write my own system startup service.

You need to create file named vbox in /etc/sysconfig/ to list the virtual machine names that you want to start with system. Also when shutting down this service will save state to all running VMs. Here is the script:

/etc/init.d/vbox

#!/bin/sh
#
# chkconfig: - 91 35
# description: Starts and stops vbox autostart VMs.

### BEGIN INIT INFO
# Provides: vbox
# Required-Start: $network $named $vboxdrv
# Required-Stop: $network $named
# Default-Start:
# Default-Stop: 0 1 2 3 4 5 6
# Short-Description: Autostart some Virtual Box VMs
# Description: Autostart some Virtual Box VMs that are mentioned in /etc/sysconfig/vbox file
### END INIT INFO

. /etc/rc.d/init.d/functions

MANAGE_CMD=VBoxManage

[ -r /etc/sysconfig/vbox ] && . /etc/sysconfig/vbox

prog=$"Virtual Box Machines"

start()
{
	echo -n $"Starting $prog: "
	RETVAL=0

	for vbox_name in ${VBOX_AUTOSTART}
	do
	    SERVS=1
	    echo -n "${vbox_name} "
	    daemon $MANAGE_CMD startvm "${vbox_name}" -type vrdp >/dev/null 2>&1
	    RETVAL=$?
	    [ "$RETVAL" -eq 0 ] || break
	done
	if [ -z "$SERVS" ]; then
	    echo -n "no virtual machines configured "
	    failure
	    RETVAL=6
	else
	    if [ "$RETVAL" -eq 0 ]; then
		success $"vbox startup"
		touch /var/lock/subsys/vbox
	    else
		failure $"vbox start"
	    fi
	fi
	echo
	return "$RETVAL"
}

stop()
{
	echo -n $"Shutting down $prog: "
	for vbox_name in ${VBOX_AUTOSTART}
	do
	    echo -n "${vbox_name} "
	    runuser root -c "$MANAGE_CMD -q controlvm "${vbox_name}" savestate" >/dev/null 2>&1
	done
	RETVAL=$?
	[ "$RETVAL" -eq 0 ] && success $"vbox shutdown" || \
	    failure $"vbox shutdown"
	echo
	[ "$RETVAL" -eq 0 ] && rm -f /var/lock/subsys/vbox
	return "$RETVAL"
}

status()
{
	for vbox_name in ${VBOX_AUTOSTART}
	do
	    echo -n "${vbox_name} "
	    $MANAGE_CMD showvminfo "${vbox_name}"|grep "^State:\s*.*$"
	done
}

case "$1" in
  start)
	start
	;;
  stop)
	stop
	;;
  restart|force-reload)
	stop
	start
	;;
  status)
	status
	;;
  *)
	echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload|status}" >&2
	exit 3
	;;
esac

:

And here is configuration file:

/etc/sysconfig/vbox

# Virtual box machines to autostart
# Example to start 2 machines
#	VBOX_AUTOSTART = "MachineName1 MachineName2"

# VBOX_AUTOSTART=""

Thats it. If you have any questions do not hesitate to contact me.

The Fastest Firefox Yet

Things move quickly online, and we’ve beefed up the engine that runs Firefox to make sure you can keep up: Firefox 3.5 is more than twice as fast as Firefox 3, and ten times as fast as Firefox 2.* As a result, Web applications like email, photo sites and your favorite social networks will feel snappier and more responsive.

Adobe AIR installation fails on Fedora 10 x86_64 without any explanations. It just says:

An error occurred while installing Adobe AIR. Installation may not be allowed by your administrator. Please contact your administrator.

The reason is some missing i386 packages. You just have to run following command:

yum install gtk2-devel.i386 nss.i386 libxml2-devel.i386 libxslt.i386 gnome-keyring.i386 rpm-devel.i386

You may already have some these packages. Don’t worry about that, yum will skip them. After yum finishes, retry installation of AIR, it should work now.

To delete all .svn folders from SVN working directory for releasing folder from SVN just do this simple steps.
Create new file in /usr/local/bin with name svnrm with following content

#!/bin/sh
find . -name .svn -print0 | xargs -0 rm -rf

Save it. From now on you can execute svnrm command in your working directory and it will delete all .svn folders at once.
Have fun!

Few days ago I have found extension for Firefox which called LastPass. LastPass is a tool for remembering all your passwords and not store them on your local computer. It is very convinient to use it when you have several computers (for example at home, at office) and you need to synchronize your passwords across them. They say that they encrypt passwords localy, by binary executable which comes with an extension, and send send them in encrypted way. They say that even LastPass employee can’t see your passwords. This extension was also recomended by Mozilla, so I decided to use it and store all my passwords there.
So what I disliked there. Sometimes LastPass messing up your passwords. It suggests to use some password that is not from there. It is happening because it uses some kind of messy URL matching. It will be great in next versions to able to write wildcard URLs.
In conclusion, I advice to use it as I think that this is a good project and it will get better in near future.

There is some bug in Enigmail v0.95.7 for Thunderbird. If you untick the checkbox “Use gpg-agent for passphrases” in Advanced tab of Advanced settings menu, Thunderbird in anyway will try to use gpg-agent if GPG_AGENT_INFO environment variable is set. The reason is some little bug in Enigmail source code. To fix it, first close Thunderbird, then just open .thunderbird folder in your home directory, search for enigmail.js file. It have to be in extensions folder in one of the random name folders. When you have found the enigmail.js file open it with your favorite text editor and find line number 1368. It have to be this:

useAgent= (this.gpgAgentInfo.envStr.length>0 || this.prefBranch.getBoolPref("useGpgAgent"));

Change the || sign to &&. After change this line have to look like this:

useAgent= (this.gpgAgentInfo.envStr.length>0 && this.prefBranch.getBoolPref("useGpgAgent"));

Save file. Now open Thunderbird and enjoy.

Because svn add command does not support recursive addition of unversioned files you can use this little script to do it.
Create new file in /usr/local/bin with name svnadd with following content

#!/bin/sh
svn status | perl -ne 's/^\?\s+(\S.+)$/\1/g;chomp;system("svn add \"$_\"");'

Save it. From now on you can execute svnadd command in your working directory.

Gajim 0.12.1 says that he can’t run with root privileges. This is new feature that appeared in Fedora 10. In earlier versions it was normaly running under root. Anyway let’s turn off this feature in case that you need to run Gajim under root.

Open /usr/bin/gajim with your favorite text editor, find 24th line and just comment out this part of code:

if test $(id -u) -eq 0; then
echo "You must not launch Gajim as root, it is INSECURE"
exit 1
fi

After commenting it should look like

#if test $(id -u) -eq 0; then
#	echo "You must not launch Gajim as root, it is INSECURE"
#	exit 1
#fi

Save file. Thats it.
Happy chatting

In this article I am going to tell about my experience with Linux software RAID.
So I had a ASUS P6T motherboard which has Intel ICH10R raid controller, 3x 1 Tb SATA 2 HDDs and Intel Core i7 920 processor. So I wanted to install Fedora 10 on that machine.
After configuring RAID 5 in the BIOS I booted the Fedora 10 installation DVD to start the installation. BUT! Suddenly I saw that Anaconda see 3 separate hard drives instead of 1 RAID device. After some googleing I figured out that my motherboard don’t have real RAID controller. Instead it is fakeraid controller. It is just software raid which software is located in BIOS. So I decided to use linux software raid, because it is definitely better than the from ASUS.
So installed Fedora 10 with linux software RAID 5 with LUKS encryption. After installation machine started to work very slowly. I thought it so because of the encryption, but after some googleing I understood that the encryption can’t slow down the machine that way. The thing was when you newly create RAID 5 array it needs to build the 3rd hard drive and it take a lot of time. It took from me approximately 4 hours to finish that operation on 1 Tb hard drives. You can check the rebuild status at any time invoking one of the following commands:

# cat /proc/mdstat

or

# mdadm --detail /dev/md0

After rebuild was over and after some tunings (see tuning parameters below) I had ~90 Mb/s write and ~200 Mb/s read.

My tuning parameters was:

echo 32768 > /sys/block/md0/md/stripe_cache_size

blockdev --setra 65536 /dev/md0