.bashrc setup

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In every user's home directory there is a file .bashrc and you can specify commands to be executed after the shell for the user is opened.

The most common uses are:

Setting a PATH shell variable, so you can automatically find the programs to be executed without giving a full path.

For example, if you have Java binaries installed in /usr/java/j2sdk1.6.0/bin, you would add this path to PATH variable by editing .bashrc and add a line:

PATH=$PATH:/usr/java/j2sdk1.6.0/bin

You can also make an alias for a command and put it in .bashrc.

If you use ls -al often, you can simply add an alias in .bashrc:

alias ls='ls -al'

And each time you type ls, ls -al would be executed.