在 Linux 上的多个文件中搜索字符串
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Searching for a string in multiple files on Linux
提问by Dropout
How to search in multiple files or folders for a string inside a plaintext file?
如何在多个文件或文件夹中搜索纯文本文件中的字符串？
For example I need to find the string "foo" in all files in the folder "/home/thisuser/bar/baz/"
例如，我需要在文件夹“/home/thisuser/bar/baz/”中的所有文件中找到字符串“foo”
采纳答案by Dropout
You need to have read privileges on the files you will be searching in. If you do have them, then simply use
您需要对将要搜索的文件具有读取权限。如果您确实拥有它们，则只需使用
grep -r "foo" /home/thisuser/bar/baz/*
to search in a certain folder or
在某个文件夹中搜索或
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
如果您需要在特定文件中搜索，在本例中为“somefile.txt”。基本上语法是
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.
另一个有用的选项是“-n”显示字符串位于哪个文件的哪一行，“-i”忽略大小写，“-s”抑制一些消息，如“无法读取文件”或“未找到”和“-I”忽略二进制文件。
If you use
如果你使用
grep -rnisI "foo" /home/thisuser/bar/baz/*
you will exactly know where to look.
你会确切地知道在哪里看。
回答by abhishek verma
Use
用
grep -r "foo" /home/thisuser/bar/baz/
