Common commands are used to find files or content in linux.

Type & lt; file type & gt; search for files based on the file type. Block B device c character device d Directory p Channel file f common file whereis <程序名称>
Find the software installation path
-B: only query binary files.
-M: only search for help files
-S: only find the source code
-U: exclude files of the specified type.
-F only displays file names
-B <目录> Search for binary files in a specified directory
-M <目录> Search for help files in the specified directory
-S <目录> Find the source code in the specified directory

Locate <文件名称>
Search for files in the file index database
-D <数据库路径> Search for a specified database
Updatedb
Update a file index database


Find [path] <表达式>
Search for files
-Name <表达式> Search for files by file name
-Iname <表达式> Search for files by file name, case insensitive
-Path <表达式> Search for files by path
-Ipath <表达式> Search for files by PATH, case insensitive
-Amin <分钟> Files accessed in the past N minutes
-Atime <天数> Files accessed in the past N days
-Cmin <分钟> Files modified in the past N minutes
-Ctime <天数> Files modified in the past N days
-Anewer <参照文件> Objects read later than the reference file
-Cnewer <参照文件> Files modified later than the reference files
-Size <大小> Search for files based on the file size, in the unit of B c w k M G
-Type <文件类型> Search for a file based on the file type. Block B device c character device d Directory p pipeline file f common file l link s Port file
-User <用户名> Search for files by owner user
-Uid Search for files by UID
-Group <群组名> Search for files by group
-Gid Search for files by GID
-Empty


Find the row matching the specified string from the file content:
$ Grep "searched string" file name
Find the row matching the regular expression from the file content:
$ Grep-e "regular expression" file name
Case insensitive when searching:
$ Grep-I "searched string" file name
Find the number of matched rows:
$ Grep-c "searched string" file name
Find rows that do not match the specified string from the file content:
$ Grep-v "searched string" file name

Search for all text files with the extension. log in the root directory and find the rows containing "ERROR ".
Find/-type f-name "*. log" | xargs grep "ERROR"

After finding the httpd. conf file, the system displays the httpd. conf file on the screen.
Find/-name "httpd. conf"-ls

Search for a file in the root directory
Find.-name "test"

Search for files containing a string in a directory

Grep-r "zh_CN "./