4-4 the grep search command for Linux

Search string Command grep

Command format: grep [option] ' string ' file name

#在文件当匹配符合条件的字符串

Options:

-I ignores case

-V excludes the specified string

The find command differs from the grep command

Find command: Searches the system for eligible file names, and if matching is required, wildcard matches are used. Wildcard characters are exact matches

grep command: Searches for eligible strings in a file, matches with regular expressions if required, and regular expressions that contain matches.

Search for file names using find

Data regular expression matching in search files

4-4 the grep search command for Linux