从多个文件中查找一个字符串

平时在对日志的查找时，可能需要对多个日志进行一个字符串的查找，

 

用法: grep -rnisI 'foo' .

 

 

 

 

You need to have read privileges on the files you will be searching in. If you do have them, then simply use

grep -r "foo" /home/thisuser/bar/baz/*

to search in a certain folder or

grep "foo" /home/thisuser/bar/baz/somefile.txt

if you need to search in a specific file, in this case "somefile.txt". Basically the syntax is

grep [options] [searched string] [path]
// -r is an option which states that it will use recursive search

Another useful options are "-n" to show on which line in which file the string is located,

"-i" to ignore case,

"-s" to suppress some messages like "can't read file" or "not found" and

"-I" to ignore binary files.

 

If you use

grep -rnisI "foo" /home/thisuser/bar/baz/*

you will exactly know where to look.