grep
程序员文章站
2024-02-23 23:22:06
...
grep参数
1. -c 显示匹配的行数(就是显示有多少行匹配了);
2. -n 显示匹配内容所在文档的行号;
3. -i 匹配时忽略大小写;
4. -s 错误信息不输出;
5. -v 输出不匹配内容;
6. -x 输出完全匹配内容;
7. \ 忽略表达式中字符原有含义;
8. ^ 匹配表达式的开始行;
9. $ 匹配表达式的结束行;
10. \< 从匹配表达式的行开始;
11. \> 到匹配表达式的行结束;
12. [ ] 单个字符(如[A] 即A符合要求);
13. [ - ] 范围;如[A-Z]即A,B,C一直到Z都符合要求;
14. . 所有的单个字符;
15. * 所有字符,长度可以为0;
grep list file
xargs can read items from a file (like your files.txt list) with it's option:
--arg-file=file
-a file
Read items from file instead of standard input. If you use this
option, stdin remains unchanged when commands are run. Other‐
wise, stdin is redirected from /dev/null.
So this should work too:
xargs -a files.txt grep -i 'foo'
or for spaces in filenames
xargs -d'\n' -a files.txt grep -i 'foo'
xargs -I{} -a files.txt grep -i 'foo' {}
或者
for i in $(cat files.txt); do grep -i 'foo' $i ; done
转载于:https://www.jianshu.com/p/d67f3b80eed7