shell读取文件的每一行

时间:2023-12-21 09:49:38

写法一:

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#!/bin/bash

while read line

do

echo $line

done < filename(待读取的文件)

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写法二:

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#!/bin/bash

cat filename(待读取的文件) | while read line

do

echo $line

done

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写法三:

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for line in `cat filename(待读取的文件)`

do

echo $line

done

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说明:

for逐行读和while逐行读是有区别的,如:

$ cat file

1111

2222

3333 4444 555

$ cat file | while read line; do echo $line; done

1111

2222

3333 4444 555

$ for line in $(<file); do echo $line; done

1111

2222

3333

4444

555

转自:http://hi.baidu.com/7636553/item/8476a5cdd8b5bf13b67a2433