linux-tutorial/codes/shell/脚本函数/脚本库.sh

#!/usr/bin/env bash

# myscript functions

function addem {
	echo $[ $1 + $2 ]
}

function multem {
	echo $[ $1 * $2 ]
}

function divem

{
if [ $2 -ne 0]; then
echo $[ $1 / $2 ]
else
echo -1
fi
}