The export command
Set export attribute for shell variables. 11 examples from the lessons of the IVski Linux Playground — try them in the terminal next to them.
Examples
export MYNAME="IVski"Environment variable (inherited by subprocesses)
export PATH="$PATH:/new/directory"Temporary (this session)
export PATH="$HOME/.local/bin:$PATH"Add to front (higher priority)
export PATH="$HOME/scripts:$PATH"
export EDITOR=nano
export PS1='\[\033[1;32m\]\u@\h\[\033[0m\]:\[\033[1;34m\]\w\[\033[0m\]\$ '
export HISTSIZE=10000
export HISTFILESIZE=20000
export HISTCONTROL=ignoredups:erasedups
export HISTCONTROL=ignoredupsNo duplicate entries
export HISTTIMEFORMAT="%F %T "Add timestamps