How to recover from corrupt rpm database on RHEL/CentOS/Fedora

First and foremost thing take a backup of the existing rpm database( yes the corrupted one...you never know...).This is located in /var/lib/rpm ..depend on your distribution.

Now go to that dir(/var/lib) and take a backup of entire rpm dir ..like this:

tar -cvzf rpm-date.tar.gz rpm

And finally start rebuilding the rpm database like this:

cd /var/lib/rpm

rm -f __db* # delete it if present

Read More

[ How to ] disable the “Your battery may be old or broken” notification in Ubuntu 9.10

Open gconf-editor, and setting the key /apps/gnome-power-manager/notify/low_capacity to false.

Read More

How to : Reset MySQL root password

Step # 1: Stop MySQL
Type the following command to stop mysql server under RHEL / Fedora / CentOS Linux:
# /etc/init.d/mysqld stop

Use the following command if you are using FreeBSD:
# /usr/local/etc/rc.d/mysql-server stop

Use the following command if you are using Debian / Ubuntu Linux:
# /etc/init.d/mysql stop

Alternatively, you can stop the MySQL server by sending a kill to the mysqld

Read More

Sync your iPhone Music Libary With Rhythmbox in Ubuntu

The following tutorial only works in Ubuntu Karmic (and other karmic-derivative distro) andiPhone firmware 3.0 and above.Remove all iFuse related filesIf you have previously installed ifuse in your system, you need to remove it and its related files. If you did not install ifuse before, you can ignore this part and skip to the next section.sudo apt-get remove gvfs-backends ifuse

Read More

How to upgrade Ubuntu 9.10 (Karmic) to Ubuntu 10.04 (Lucid Lynx)

Add the below line to Software Sources list

deb http://us.archive.ubuntu.com/ubuntu lucid multiverse

on terminal execute the below command

sudo apt-get install update-manager-core



sudo do-release-upgrade -d

Read More

Bluetooth 4.0 to reach devices in fourth quarter

The Bluetooth 4.0 wireless specification could start to appear in devices such as headsets, smartphones and PCs by the fourth quarter, the Bluetooth Special Interest Group said on Wednesday.The new specification will be able to be used in lower-power devices than previous versions of the technology, including watches, pedometers, smart meters and other gadgets that run on coin-cell batteries,

Read More

How to automatically open mailto (email) links in a gmail compose mail tab in Google Chrome

The following perl script will automatically open mailto (email) links in a gmail compose mail tab in Google Chrome on Ubuntu. You'll need to install perl in order for this to work, 'sudo apt-get install perl' in the terminal (Applications > Accessories > Terminal). You set the script up under System > Preferences > Preferred Applications > under Mail Reader choose Custom and enter this in the

Read More