bash的几种for循环

最新推荐文章于 2025-05-20 14:42:58 发布

iteye_14216

最新推荐文章于 2025-05-20 14:42:58 发布

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分类专栏： Linux 文章标签： c/c++ shell

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1、罗列式

[code]
for VARIABLE in 1 2 3 4 5 .. N
do
command1
command2
commandN
done
[/code]

[code]
#!/bin/bash
for i in 1 2 3 4 5
do
echo "Welcome $i times"
done
[/code]

2、使用rang
[code]
#!/bin/bash
for i in {1..5}
do
echo "Welcome $i times"
done
[/code]

3、使用rang and step
[code]
echo "Bash version ${BASH_VERSION}..."
for i in {0..10..2}
do
echo "Welcome $i times"
done
[/code]

4、使用seq
[code]
for i in `seq 1 5`
do
echo "Welcome $i times"
done
[/code]

5、和高级语言一样的for
[code]
for (( EXP1; EXP2; EXP3 ))
do
command1
command2
command3
done
[/code]

[code]
#!/bin/bash
for (( c=1; c<=5; c++ ))
do
echo "Welcome $c times..."
done
[/code]

[code]
#!/bin/bash
for (( ; ; ))
do
echo "infinite loops [ hit CTRL+C to stop]"
done
[/code]