写法一：

----------------------------------------------------------------------------

#!/bin/bash

while read line

do

    echo $line

done < file(待读取的文件)

----------------------------------------------------------------------------

写法二：

----------------------------------------------------------------------------

#!/bin/bash

cat file(待读取的文件) | while read line

do

    echo $line

done

----------------------------------------------------------------------------

写法三：

----------------------------------------------------------------------------

for line in `cat file(待读取的文件)`

do

    echo $line

done

----------------------------------------------------------------------------

说明：

for逐行读和while逐行读是有区别的,如:

$ cat file

aaaa

bbbb

cccc dddd

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

aaaa

bbbb

cccc dddd

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

aaaa

bbbb

cccc

dddd

 

== 实践 === 

#! bin/sh

 

#$str='http://images.stylight.de/static/res200/s2870/2870657.1.jpg%0D'

#echo ${str##*fo}

#echo ${str#fo}

while read line

do

   wget -p ${line:0:59}

done < '/root/mysql/mysql.log';