bash functions

functions.sh

#!/usr/bin/env bash

# Utility functions to use in bash shell and scripts


# backup file
function bak() { mv $1 $1.bak && cp -p $1.bak $1 ;}
function su_bak() { sudo mv $1 $1.bak && sudo cp -p $1.bak $1 ;}

# backup file with date
function bakd() { v="$1.bak.`date -u +%Y-%m-%d-%H%M%S`" ; mv $1 $v && cp -p $v $1 ;}
function su_bakd() { v="$1.bak.`date -u +%Y-%m-%d-%H%M%S`" ; sudo mv $1 $v && sudo cp -p $v $1 ;}