linux --批量修改文件内容

由于目前测试的BIOS有一个option 发生了改变，因此我们需要在之前写好的脚本上进行修改，将旧的option 改为新的选项，因此在此处用到了批量修改文件中的内容；

1. perl 命令替换：

perl -i -e "s/old/new/g" the path of the file

下面，就将test1 text2，中的cat 都换成了dog，汪汪~~

[root@ tmp]# touch test1.txt
[root@ tmp]# vim test1.txt
[root@ tmp]# cat test1.txt
cat cat cat
i like linux
i like windows too
i like watching TV
I like chenqingling

[root@ tmp]# cp test1.txt text2.txt
[root@ tmp]# cp test1.txt text3.txt
[root@ tmp]# cp test1.txt text4.txt
[root@ tmp]# perl -p -i -e "s/cat/dog/g" test1.txt text2.txt
[root@ tmp]# cat test1.txt
dog dog dog
i like linux
i like windows too
i like watching TV
I like chenqingling

[root@ tmp]# cat text2.txt
dog dog dog
i like linux
i like windows too
i like watching TV
I like chenqingling

[root@ tmp]# cat text3.txt
cat cat cat
i like linux
i like windows too
i like watching TV
I like chenqingling

2.运用sed 命令批量修改文件内容：

sed -i "s/old/new/g" the path of the files

修改text2，text3，中的linux ,修改为Unix

[root@ tmp]# sed -i "s/linux/Unix/g" text2.txt text3.txt
[root@ tmp]# cat text2.txt
dog dog dog
i like Unix
i like windows too
i like watching TV
I like chenqingling

[root@ tmp]# cat text3.txt
cat cat cat
i like Unix
i like windows too
i like watching TV
I like chenqingling

[root@ tmp]# cat test1.txt
dog dog dog
i like linux
i like windows too
i like watching TV
I like chenqingling

 3.补充点：将old 全部换成 new 

sed -i “s/old/new/g” `grep old -rl /path`    #当前路径表示：./

[root@ lu]# sed -i "s/TV/xiaozhan/g" `grep TV -rl ./` #注意这里的`` 不是单引号！！
[root@ lu]# cat text2.txt
dog dog dog
i like Unix
i like windows too
i like watching xiaozhan
I like chenqingling

[root@ lu]# cat text3.txt
cat cat cat
i like Unix
i like windows too
i like watching xiaozhan
I like chenqingling

[root@ lu]# cat text4.txt
cat cat cat
i like linux
i like windows too
i like watching xiaozhan
I like chenqingling