.bashrc¶
The purpose of a .bashrc file is to provide a place where you can set up variables, functions and aliases, define your (PS1) prompt and define other settings.
Set environment variable¶
Set a new variable, add a new line at the end of .bashrc and add
export VARNAME="var_value"
Add new value to a existing environment variable, such as PATH
export PATH="new_value":${PATH}
Or define a new variable first, then use the new variable.
export VARNAME="var_value"
export PATH=${VARNAME}:${PATH}
Set alias¶
alias examples
alias apt-get='sudo apt-get'
alias ls='ls --color=auto'
Take effect¶
Make changes in .bashrc immediately effective.
$ source ~/.bashrc