转自：
https://blog.csdn.net/babyfish13/article/details/52981110
第一类：数字性循环
-----------------------------
for1-1.sh
#!/bin/bash
for((i=1;i<=10;i++));
do
echo $(expr $i \* 3 + 1);
done
-----------------------------
for1-2.sh
#!/bin/bash
for i in $(seq 1 10)
do
echo $(expr $i \* 3 + 1);
done
-----------------------------
for1-3.sh
#!/bin/bash
for i in {1..10}
do
echo $(expr $i \* 3 + 1);
done
-----------------------------
for1-4.sh
#!/bin/bash
awk 'BEGIN{for(i=1; i<=10; i++) print i}'
第二类：字符性循环
-----------------------------
for2-1.sh
#!/bin/bash
for i in `ls`;
do
echo $i is file name\! ;
done
-----------------------------
for2-2.sh
#!/bin/bash
for i in $* ;
do
echo $i is input chart\! ;
done
-----------------------------
for2-3.sh
#!/bin/bash
for i in f1 f2 f3 ;
do
echo $i is appoint ;
done
-----------------------------
for2-4.sh
#!/bin/bash
list="rootfs usr data data2"
for i in $list;
do
echo $i is appoint ;
done
第三类：路径查找
-----------------------------
for3-1.sh
#!/bin/bash
for file in /proc/*;
do
echo $file is file path \! ;
done
-----------------------------
for3-2.sh
#!/bin/bash
for file in $(ls *.sh)
do
echo $file is file path \! ;
done
————————————————
版权声明：本文为CSDN博主「BabyFish13」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/babyfish13/article/details/52981110
