My experience with OpenSource & My Hobbies

1. How to remove all empty lines in a file   sed -e '/^$/d' filename.txt 2. How to remove the leading empty spaces   (whitespac...

Most of us are always feel boring to read man pages in terminal window. what if we have a printable version of a particular command's ...

There are many ways to find the filesystem of a partition in linux (provided the partition mounted) Following are the command line tools r...

1. Copy the whole repository of a particular linux distro(BOSS Gnu/linux, ubunutu) into a harddisk(external/internal), either by debmirror ...

dpkg - > is a debian package manager command dpkg -l - > will list all the packages with their status installed/deinstalled/remove...

Some times the debian package version which is installed in your linux box (say  foo-package-x.y.xy  ) is different from what version you r...

 Some time wireless/wi-fi is not working in BOSS GNU/Linux[or any debian based linux like ubuntu etc].  The reason 1.  The exact firmware...

In some scenarios its needed to lock a user to login into his own account.  This can be achieved by many ways. 1.  GUI way  1.1 Go to Sy...

This post is regarding debian based distros which supports .deb, so the procedures are not applicable for distros that uses .rpm like fedor...

Scenario:   Once windows(vista, 7, xp) installed after the linux installation then one will lost his grub and there is no way to select th...

Some times after the installation of linux(Debian based) one will end-up with the terminal and no GUI.  So, how can we fix it? Some quick c...

How to know the inode of a file of directory: $ls -i <- displays the innode of the file& directory in current directory Ex: ...

In Debian linux(which uses apt-get & dpkg for package mangement) we can find out what are the files get installed when a new package ...

In Debian Linux we have one superb command tool called 'tr' [Translate or delete characters] . This simple handy tool has may usa...

Cron : is a daemon process which checks the crontab every minute for checking is there any scheduled task to execute. After this checking i...

Using grep we achieve this.. Say we have to find out the word "gdk" from all the '.c' files in a directory.. the command w...

$dpkg -s "package-name" -s gives information like 1. The package is installed or not, removed 2. size of the installed package 3....

Lets assume there is a file which has 1000 lines. Now i want to see 20 lines from the a pattern (say pattern is 'top secret'). How...

Following commands list only directories in the current directory. 1. #ls -l | grep ^d 2. #ls -d */ 3. #find -type d Ex: #find /tmp -typ...