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How to install OTRS (Open source Ticket Request System) in Debian

OTRS is an Open source Ticket Request System (also well known as trouble ticket system) with many features to manage customer telephone calls and e-mails. The system is built to allow your support, sales, pre-sales, billing, internal IT, helpdesk, etc. department to react quickly to inbound inquiries.

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Galternatives - Graphical setup tool for Alternatives Configuration in Ubuntu

There are several programs fulfilling the same or similar functions to be installed on a single system at the same time. For example, many systems have several text editors or different web browsers installed,Multimedia players,graphics editors at once.

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Bash Shell Keyboard Shortcuts For Linux Users

The default shell on most Linux operating systems is called Bash. There are a couple of important hotkeys that you should get familiar with if you plan to spend a lot of time at the command line. These shortcuts will save you a ton of time if you learn them.

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Ubuntu 7.04 (Feisty Fawn) Beta Preview

This is very detailed Ubuntu 7.04 (Feisty Fawn) Beta Preview with nice screebshots.This preview includes Easy-to-install codec wizards,Migration assistant,Plug and play network sharing with Avahi,network manager,windows mount tool,artwork,help center,desktop effects,new partition tool,gnome control center.

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Enabling quotas for users

Check to make sure the quota package is installed, else run:

# yum install quota


Edit "/etc/fstab" and add "usrquota,grpquota" to the / partition:

LABEL=/    /    ext3    defaults,usrquota,grpquota    1 1


Then run:

# mount -o remount /
# quotacheck -avugm
# quotaon -avugm


To check quotas for all users:
# repquota -a


To edit quota for a particular user:
# edquota -u <user>


Alternately use setquota:
# setquota <softlimit> <hardlimit> 0 0 <user>

Creating LVM partitions.

After creating a new partition (/dev/hda5) with fdisk run the below commands:

# partprobe
# pvcreate /dev/hda5
# vgcreate vg0 /dev/hda5
# lvcreate -L 1G -n lv0 vg0
# mke2fs -j /dev/vg0/lv0

Extending LVM

Extend partition by 1Gb.

# lvresize -L +1G /dev/vg00/lvol0
# e2fsck -f /dev/vg00/lvol0
# resize2fs -pf /dev/vg00/lvol0


Notes:

  • resize2fs has replaced ext2online in FC6.
  • need to unmount volume prior to doing resize2fs.

Restoring corrupt rpm database

If you have a corrupt rpm database, simply delete the db files and rebuild it again.

# rm -rf /var/lib/rpm/*db.*
# rpm --rebuilddb

Backup and Restore Ubuntu System using Sbackup

SBackup is a simple backup solution intended for desktop use. It can backup any subset of files and directories. Exclusions can be defined by regular expressions. A maximum individual file size limit can be defined. Backups may be saved to any local and remote directories that are supported by gnome-vfs. There is a Gnome GUI interface for configuration and restore.

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Media Players Available for Ubuntu Linux

This is list of Media Players Available for Ubuntu Linux with installation instructions and screenshots this includes Mplayer,songbird,amarok,listen,beep media player,banshee,Rhythmbox, xmms,quod libet,VLC Media Player,Exaile. Very Useful list for all Users and admins

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