shell中斷，繼續與退出
用法一、break退出整個循環
[root@localhost test]# cat 10.sh
#!/bin/bash
for i in `seq 1 10`
do
echo $i
if [ $i -eq 4 ]
then
break
fi
echo $i
done
echo "for done"
用法二、continue退出本次循環
[root@localhost test]# cat 10.sh
#!/bin/bash
for i in `seq 1 10`
do
echo $i
if [ $i -eq 4 ]
then
continue
fi
echo $i
done
echo "for done"
用法三、結束shell
[root@localhost test]# cat 10.sh
#!/bin/bash
for i in `seq 1 10`
do
echo $i
if [ $i -eq 4 ]
then
exit
fi
echo $i
done
echo "for done"