Shell 语言中的循环语句

总结几种 Shell 语言中可以用到的循环语句

• for
• while

for

数字循环

简单数字循环

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#!/usr/bin/env bash # Author: wxnacy([email protected]) # Description: # function 1 # lists="1 2 3 4 5" # for var in $lists # function 2 # for var in 1 2 3 4 5 # function 3 for var in {1..5} do echo $var done

命令行使用方式

1	$ for var in {1..5};do;echo $var; done

使用 seq

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#!/usr/bin/env bash # Author: wxnacy([email protected]) # Description: for var in $(seq 1 10) do echo $var done

使用 2 作为步长

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#!/usr/bin/env bash # Author: wxnacy([email protected]) # Description: for var in $(seq 1 2 10) do echo $var done

使用 c 语言的方式

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#!/usr/bin/env bash # Author: wxnacy([email protected]) # Description: for ((var=1; var<=5; var ++)) do echo $var done

while

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#!/usr/bin/env bash # Author: wxnacy([email protected]) # Description: i=1 while(( i <= 10 )) do let "i+=1" done