Common use examples of find

Common usage example of find in Linux & middot; findpath-option [-print] [-exec-okcommand] {}\; #-print: output the searched file to the standard output #-execcommand {}\; ----- execute command operations on the retrieved file, {} and...

Common usage examples of find in Linux
· Find path-option [-print] [-exec-OK command] {}\;
#-Print: output the searched files to the standard output
#-Exec command {}\; ----- execute the command operation on the retrieved file. there is a space between {} and \;
#-OK is the same as-exec, but you need to consult the user before the operation

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-Name filename # search for a file named filename
-Perm # search by execution permission
-User username # search by file owner
-Group groupname # search by group
-Mtime-n + n # find the file based on the file change time.-n indicates that the file is less than n days, and + n indicates that the file is earlier than n days.
-Atime-n + n # Query GIN by file access time: 0px ">-perm # Query by execution permission
-User username # search by file owner
-Group groupname # search by group
-Mtime-n + n # find the file based on the file change time.-n indicates that the file is less than n days, and + n indicates that the file is earlier than n days.
-Atime-n + n # search for files based on the file access time.-n indicates that the file is less than n days, and + n indicates that the file is earlier than n days.
-Ctime-n + n # find the file based on the file creation time.-n indicates that the file is less than n days, and + n indicates that the file is earlier than n days.
-Nogroup # Check for files with no valid group, that is, the file group does not exist in/etc/groups.
-Nouser # check files with no valid owner, that is, the file owner is not stored in/etc/passwd.
-Newer f1! F2 file search,-n refers to n days or less, + n refers to n days ago
-Ctime-n + n # find the file based on the file creation time.-n indicates that the file is less than n days, and + n indicates that the file is earlier than n days.
-Nogroup # Check for files with no valid group, that is, the file group does not exist in/etc/groups.
-Nouser # check files with no valid owner, that is, the file owner is not stored in/etc/passwd.
-Newer f1! F2 # Query files whose modification time is earlier than f1 but earlier than f2
-Type B/d/c/p/l/f # Check block devices, directories, character devices, pipelines, symbolic links, and common files.
-Size n [c] # Query objects with a length of n [or n bytes]
-Depth # search for the local directory before entering the subdirectory
-Fstype # Query files whose change time is newer than f1 but earlier than f2
-Type B/d/c/p/l/f # Check block devices, directories, character devices, pipelines, symbolic links, and common files.
-Size n [c] # Query objects with a length of n [or n bytes]
-Depth # search for the local directory before entering the subdirectory
-Fstype # Query files in a certain type of file system. These file system types can be found in/etc/fstab.
-Mount # The mount point of the file system is not crossed during File query.
-Follow # if a symbolic link file is encountered, the file indicated by the link will be tracked.
-Cpio %; # Query files in a certain type of file system. These file system types can be found in/etc/fstab.
-Mount # The mount point of the file system is not crossed during File query.
-Follow # if a symbolic link file is encountered, the file indicated by the link will be tracked.
-Cpio # Use the cpio command to back up the matching files to the tape device.
-Prune # ignore a directory

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$ Find ~ -Name "*. txt"-print example: check the. txt file and display it in home ‑.
$ Find.-name "*. txt"-print
$ Find.-name "[A-Z] *"-pri26nbsp; # Use the cpio command for matching files to back them up to tape devices
-Prune # ignore a directory

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$ Find ~ -Name "*. txt"-print example: check the. txt file and display it in home ‑.
$ Find.-name "*. txt"-print
$ Find.-name "[A-Z] *"-print # Query files starting with an uppercase letter
$ Find/etc-name "host *"-print # Query files starting with host
$ Find.-name "commana-z00000000a-z0000000000000--9000000000--90000.txt"-print # Query txt files starting with two lower-case letters and two numbers
$ Find.-perm 755-print
$ Find.-perm-007-exec ls-l {}\; # check whether all files that can be read and written by users are the same as-perm 777
$ Find.-type d-print
$ Find .! -Type d-print
$ Find.-type l-print

$ Find.-size + 000000c-print # Query files with a length greater than 1 MB
$ Find.-size 100c-print # Query files with a length of C
$ Find.-size + 10-print # Query 10 files whose length exceeds the expiration date (1 File = 512 bytes)

$ Cd/
$ Find etc home apps-depth-print | cpio-ivcsc65536-o/dev/rmt0
$ Find/etc-name "passwd *"-exec grep "cnscn" {}\; # check whether a cnscn user exists
$ Find.-name "yao *" | xargs file
$ Find.-name "yao *" | xargs echo "">/tmp/core. log
$ Find.-name "yao *" | xargs chmod o-w

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Find-name CMDL * search for files starting with CMDL in the current directory
Find-name extension L * fprint file searches for files starting with extension L in the current directory, and outputs the results to the file.
Find-name ap *-o-name may * search for files starting with ap or may
Find/mnt-name tom.txt-ftype vfat find the file named tom.txt and the file system type is vfat under/mnt
Find/mnt-name t.txt! -Ftype vfat: find the file named tom.txt under/mntand the file system type is not vfat.
Find/tmp-name wa *-type l search for files starting with wa and whose type is symbolic link under/tmp
Find/home-mtime-2 Check files modified in the last two days under/home
Find/home-atime-1. check the files that have been accessed within one day.
Find/home-mmin + 60 check files modified 60 minutes ago under/home
Find/home-amin + 30 check files that have been accessed in the last 30 minutes
Find/home-newer tmp.txt check for files or directories that are earlier than tmp.txt in/home.
Find/home-anewer tmp.txt check the files or directories with a time closer to tmp.txt under/home.
Find/home-used-2 list the files or directories that have been accessed within two days after the files or directories have been modified.
Find/home-user cnscn list the files or directories belonging to the user's cnscn in the/home directory
Find/home-uid + 501 List files or directories with user IDs greater than 501 in the/home directory
Find/home-group cnscn list/home files or directories in which the group is cnscn
Find/home-gid 501 List/home files or directories with group id 501
Find/home-nouser: list files or directories that do not belong to local users in/home.
Find/home-nogroup list files or directories in/home that do not belong to the local group
Find/home-name tmp.txt-maxdepth 4 list/The tmp.txt in homecan be found at a maximum of three layers.
Find/home-name tmp.txt-mindepth 3 query from Layer 1
Find/home-empty
Find/home-size + 512 k query files larger than k
Find/home-size-512 k to query files smaller than k
Find/home-links + 2 check files or directories with hard connections greater than 2
Find/home-perm 0700 check the file or directory with the permission of 700
Find/tmp-name tmp.txt-exec cat {}\;
Find/tmp-name tmp.txt-OK rm {}\;

Find/-amin-10 # search for files accessed in the last 10 minutes in the system
Find/-atime-2 # search for files accessed in the last 48 hours in the system
Find/-empty # search for files or folders that are empty in the system
Find/-group cat # find the groupcat file in the system
Find/-mmin-5 # search for the files modified in the last 5 minutes in the system
Find/-mtime-1 # search for files modified in the last 24 hours in the system
Find/-nouser # search for files belonging to the void user in the system
Find/-user fred # search for files belonging to the user FRED in the system

Query all common files in the current directory
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# Find.-type f-exec ls-l {}\;
-Rw-r -- 1 root 34928 2003-02-25./conf/httpd. conf
-Rw-r -- 1 root 12959 2003-02-25./conf/magic
-Rw-r -- 1 root 180 2003-02-25./conf. d/README
Query all common files in the current directory and use the ls-l command in the-e x e c option to list them.

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In the/l o g s Directory, find the files whose changes were earlier than 5 days and delete them:
$ Find logs-type f-mtime + 5-exec-OK rm {}\;

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Query the files modified on the current day
[Root @ book class] # find./-mtime-1-type f-exec ls-l {}\;

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Query the file and ask if you want to display it
[Root @ book class] # find./-mtime-1-type f-OK ls-l {}\;
<Ls.../classDB. inc. php>? Y
-Rw-r -- 1 cnscn 13709 January 12 12:22./classDB. inc. php
[Root @ book class] # find./-mtime-1-type f-OK ls-l {}\;
<Ls.../classDB. inc. php>? N
[Root @ book class] #

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Query and submit it to awk for processing
[Root @ book class] # who | awk '{print $1 "\ t" $2 }'
Cnscn pts/0

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Awk --- grep --- sed

[Root @ book class] # df-k | awk '{print $1}' | grep-v 'none' | sed s "// dev \ // g"
File system
Sda2
Sda1
[Root @ book class] # df-k | awk '{print $1}' | grep-v 'none'
File system
/Dev/sda2
/Dev/sda1

1) search for all *. h in/tmp, search for "SYSCALL_VECTOR" in these files, and print out all file names containing "SYSCALL_VECTOR ".

A) find/tmp-name "*. h" | xargs-n50 grep SYSCALL_VECTOR
B) grep SYSCALL_VECTOR/tmp/*. h | cut-D': '-f1 | uniq> filename
C) find/tmp-name "*. h"-exec grep "SYSCALL_VECTOR" {}\;-print

2) find/-name filename-exec rm-rf {}\;
Find/-name filename-OK rm-rf {}\;

3) for example, to search for files larger than 3 m on a disk:
Find.-size + 3000 k-exec ls-ld {};

4) copy the find to another place.
Find *. c-exec cp '{}'/tmp ';'

If a special file exists, you can use cpio or the following syntax:
Find dir-name filename-print | cpio-pdv newdir

6) search for the files changed at 16:36:37,-11-30.
# A = 'find./-name "* php" '| ls-l -- full-time $ A 2>/dev/null | grep "2004-11-30 16:36:37"