bash_cheatsheet

fast personal cheatsheet

Table Of Contents

• if
  • string comparison
• real use

if

string comparison

VAR="hello"
if [ -n "$VAR" ]; then
    echo "VAR is not empty"
fi

VAR=""
if [ -z "$VAR" ]; then
    echo "VAR is empty"
fi

real use

execute cmd every $time

#!/bin/sh
while [ true ]
do
    sh special_svn_script.sh
    sleep 10
done