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shell中for循环的几个常用写法

时间:2021-07-06 14:36:14      阅读:16      评论:0      收藏:0      [点我收藏+]

数字性循环

#!/bin/bash

for ((i = 1; i <= 10; i++)); do
    echo $(expr $i \* 3 + 1)
done
#!/bin/bash

for i in $(seq 1 10); do
    echo $(expr $i \* 3 + 1)
done
#!/bin/bash

for i in {1..10}; do
    echo $(expr $i \* 3 + 1)
done
#!/bin/bash

awk BEGIN{for(i=1; i<=10; i++) print i}

字符性循环

Shell 数组用括号来表示,元素用"空格"符号分割开,语法格式如下:

array_name=(value1 value2 ... valuen)
#!/bin/bash

list="rootfs usr data data2"
for i in $list; do
    echo $i is appoint
done
#!/bin/bash

for i in $*; do
    echo $i is input chart\!
done
#!/bin/bash

for i in f1 f2 f3; do
    echo $i is appoint
done
#!/bin/bash

list="rootfs usr data data2"
for i in $list; do
    echo $i is appoint
done

路径查找

#!/bin/bash

for file in /proc/*; do
    echo $file is file path \!
done
#!/bin/bash

for file in $(ls *.sh); do
    echo $file is file path \!
done

 

shell中for循环的几个常用写法

原文:https://www.cnblogs.com/luweiweicode/p/14975735.html

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