shell 开发笔记

while 循环

#!/bin/sh

while true; do
echo "haha"
sleep 1
done

for 循环

#!/bin/sh

for i in $(seq 1 10)  
do   
	echo $i
	sleep 1
done

获取当前脚本所在路径

#!/bin/sh
DIR="$( cd "$( dirname "$0"  )" && pwd  )"

echo "shell pwd:$DIR"