Bash configuration files

Bash configuration files

The bash controls some special files, which are part of every user's profile. These files are sitting right in your home directory.

[agustin@server2 agustin]$ ls .bash*

File name	Description
.bash_history	Keeps a list of the commands you have been typing
.bash_logout	A list of auto run commands to be executed when you leave the shell,
.bash_profile	A list of commands to be executed when you log in.
.bashrc	contains a list of commands that is executed every time you open a new shell

Changing the prompt

This is not so important it is just a matter of personal taste. Here I will demonstrate how to modify the prompt. This modification is for general users, and the file to be modified is /etc/bashrc

[root@server2 agustin]# vi /etc/bashrc

1 # /etc/bashrc

2 

3 # System wide functions and aliases

4 # Environment stuff goes in /etc/profile

5

6 # by default, we want this to get set.

7 # Even for non-interactive, non-login shells.

8 if [ `id -gn` = `id -un` -a `id -u` -gt 99 ]; then

9       umask 002

10 else

11      umask 022

12 fi

13

14 # are we an interactive shell?

15 if [ "$PS1" ]; then

16    case $TERM in

17      xterm*)

18          PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}: ${PWD}\007"'

19          ;;

20      *)

21          ;;

22    esac

23 #   [ "$PS1" = "\\s-\\v\\\$ " ] && PS1="[\u@\h \W]\\$ "

24    

25    [ "$PS1" = "\\s-\\v\\\$ " ] && PS1="\[\e[1;32m\] \w\\$\[\e[1;37m\]"

26  

27    if [ -z "$loginsh" ]; then # We're not a login shell

28        for i in /etc/profile.d/*.sh; do

29          if [ -x $i ]; then

30              . $i

31          fi

32      done

33    fi

34 fi

35

36 unset loginsh

Comment line 23 and add line 25.

• Press ESC
• Type the colon ":"
• Type wq

The next time you login your prompt will look like this:

For root: ~#
For users: ~$