Common find usage

1. Find

Find [path]-Option [-print] [-Exec-OK command] {}\;

Search for files in a directory hierarchy

①-Print: outputs the searched file to the standard output, one file row

②-DeleteDelete the specified file

③-Exec command {}\; execute the command operation on the retrieved file. There is a space between {} And \;. "\;" is a fixed Terminator; {} will be replaced by the file

④-OK is the same as-exec, but you need to consult the user before the operation

2. Option

①-Type B/D/C/P/L/F # Check Block devices/directories/character devices/pipelines/symbolic links/common files

②-Perm # search by execution permission

③-Depth # search for the local directory before entering the subdirectory

④-Follow # If a symbolic link file is encountered, the file indicated by the link will be tracked.

Instance:

①$ Find.-type D-Print print the directory structure

②$ Find .! -Type D-print: Print non-directory files

③Find/usr/include-name '*. H'-exec grep af_inef6 {}\; (because grep cannot Recursively search subdirectories, it can be used with find. Find the af_inef6 string in the. h file in all/usr/include subdirectories)

④$ Find/etc-name "passwd *"-exec grep "cnscn" {}\; check whether a cnscn user exists

⑤$ Find.-Name "Yao *" | xargs file display file type

⑥$ Find-name AP *-o-name may * search for files starting with AP or may

7.$ Find/home-mtime-2 check files modified in the last two days under/home

Bytes$ Find/home-mtime + 2 check files modified last two days in/home

Bytes$ Find/home-mmin + 60 check files modified 60 minutes ago under/home

Bytes$ Find/home-Amin + 30 check the files that have been accessed in the last 30 minutes

11$ Find/home-mmin + 60 check files modified 60 minutes ago under/home

12$ Find/home-Amin + 30 check the files that have been accessed in the last 30 minutes

13$ Find/home-UID + 501 list files or directories with UID greater than 501 under/home

14$ Find/home-nouser: list files or directories that do not belong to local users in/home.

15$ Find/home-nogroup list files or directories in/home that do not belong to the Local Group

16$ Find/hom-name t.txt-maxdepth 4 list/homeinner tmp.txt depth up to three layers

17$ Find/home-name tmp.txt-mindepth 3 check from Layer 1

18$ Find/home-empty

19Find/tmp/-ctime + 7-delete files created one week ago in the/tmp directory

20Find./-Perm 755-print

3. Example

1) basic usage

Find/-name file name

Size-related:

-Size N [bkmg] the size is n (B is bit, C: byte, K: kb, M: MB, G: GB)

Find/-size 1500c (search for 1,500-byte files; c Indicates bytes)

Find/-size + 1500c (find files larger than 1,500 bytes, + indicates files larger)

Find/-size-1500c (find files smaller than 1,500 bytes,-Indicates smaller)

Time-related:

Find/-Amin n last n minutes

Find/-atime n last n days

Find/-Cmin n last n minutes change status

Find/-ctime n changes the status in the last n days

Find/-newer file requires a new file than the file.

2) advanced usage 1

Find/-empty blank file, blank folder, folder without subdirectories

Find/-false find files that are always wrong in the system

Find/-fstype type: Find the file that exists in the specified file system. For example, if the type is ext2

Find/-gid N group ID n files

Find/-group gname group file named gname

Find/-depth n preferentially searches for file content in a specified directory at a Layer

Find/-maxdepth levels search in a hierarchical directory in descending Mode

3) Advanced Search 2

-And and-or conditions or

4) Others

-The user name owner name is the name of the file.

-The group name owner user group name is a name file.

Reference

[1] The summary is good.

Http://techbbs.zol.com.cn/1/85_883.html

Http://bbs.linuxtone.org/thread-1425-1-1.html

Http://www.flatws.cn/article/program/shell/2011-06-13/30184.html

[2] More About find

Http://bbs.linuxtone.org/thread-1696-1-1.html

Http://linux.die.net/man/1/find

[3] Be optimistic

Http://www.linuxsir.org/main/node/137? Q = node/137 #1.1