User Tools

Site Tools


linux:bash

Bash

Bash is a Unix shell and command language distributed as default with Linux.

Colour the prompt

The prompt is defined by the variable PS1.

To set a colour for the prompt, when logged as user, save in /home/.bashrc, the following:

# colour prompt for user
PS1="\[\033[1;32m\]\u@\h\[\033[0m\]:\[\033[1;34m\]\w\[\033[0m\]\$ "
export PS1

where 1;32m means light green colour while 0m disables the colouring.

Note that non-printing character must be encapsulated between \[\033[ and \].

To set a colour for the prompt, when logged as root, save in /root/.bashrc (create it if doesn't exist), the following:

# colour prompt for admin
PS1="\[\033[1;31m\]\u@\h\[\033[0m\]:\[\033[1;34m\]\w\[\033[0m\]\$ "
export PS1

Path variable

The PATH variable is a list of directories in which are looking for the commands used with the shell.

To append a directory, save in /home/.bashrc, the following:

PATH=$PATH:new/path/directory
export PATH
linux/bash.txt · Last modified: 2020/04/03 09:34 (external edit)