[1161]shell脚本读取文件的方法

#！/bin/bash
 while read line
 do
	echo $line
 done <  filename

[root@uc-crawl01 test]# vi read_file.sh

#！/bin/bash
 while read line
 do
	echo $line
 done <  test.txt

[root@uc-crawl01 test]# cat test.txt
123
456
789

[root@uc-crawl01 test]# ./read_file.sh
-bash: ./read_file.sh: Permission denied
[root@uc-crawl01 test]# chmod 777 read_file.sh
[root@uc-crawl01 test]# ./read_file.sh
123
456
789

#!/bin/bash

cat filename | while read line

do
    echo $line
done

#!/bin/bash

for line in `cat filename`
do
    echo $line
done