Use of common find commands in Linux

The Linux Find command searches the directory structure for files and performs the specified actions. The Linux Find command provides quite a lot of search files and is very powerful. Because find has powerful features, it has a lot of options, and we need to take the time to understand it.

Command format:

Find Pathname-options [-print-exec-ok ...]

Command function:

Used to locate files in the file tree and make appropriate processing (possibly accessing the disk)

Command parameters:

The directory path that the Pathname:find command looks for. For example, use. To represent the current directory, and/to represent the system root directory.
The-print:find command outputs the matched file to standard output.
The-exec:find command executes the shell command given by the parameter to the matching file. The corresponding command is in the form of ' command ' {} \;, note the space between {} and \;
-ok: The same as-exec, except that the shell command given by the parameter is executed in a more secure mode, prompting the user to determine whether to execute before executing each command.

#-print output of the found file to standard output
#-exec command {} \; -the command operation for the file to be found, with spaces between {} and \;
#-ok and-exec are the same, except to consult the user before operation

When I perform a command operation, I first create a name file in Linux.

[[email protected] ~]$ mkdir name[[email protected] ~]$ lsdesktop Documents Downloads Music name Pictures public Te Mplates Videos

-name searches for files by file name.

[[Email protected] ~]$ lsdesktop  documents  downloads  music   name  Pictures  Public  Templates  Videos[[email  protected] ~]$ find -name name  //find a file named name./name[[email protected]  ~]$ find . -name  "*.txt"  -print   //find a. txt file in the current directory and display./test.txt[[ email protected] ~]$ find ~ -name  "*.xml"  -print  //in $  Find the. xml file in home and display the/home/ningning/.gconf/desktop/%gconf.xml/home/ningning/.gconf/desktop/gnome/accessibility/% gconf.xml/home/ningning/.gconf/desktop/gnome/accessibility/keyboard/%gconf.xml/home/ningning/.gconf/desktop/ gnome/%gconf.xml/home/ningning/.gconf/apps/nautilus/%gconf.xml   [[email protected] ~ ]$ find -name  "[a-z]*"  -print  //find a file that begins with a capital letter./downloads./.gconf/apps/ Gnome-terminal/profiles/default./templates./documents./music./pictures./public./videos./desktop[[email protected] ~]$ find -name   "p*"  -print  //find files that begin with a capital letter P./pictures./public[[email protected] ~]$ find  -name  "*s"  -print  //find files ending in lowercase s./.xsession-errors./.gvfs./.gnome2/keyrings./. Gnome2/panel2.d/default/launchers./.gnome2/nautilus-scripts./.dbus./.dbus/session-bus./.gnote/addins./.mozilla /plugins./.mozilla/extensions./downloads./.gtk-bookmarks./.local/share/applications./.local/share/. Converted-launchers./.nautilus./.gconf/apps./templates./documents./pictures./videos[[email protected]  ~]$ find -name  "[a-z]*"  -print //find a file that starts with a lowercase letter./.gnome2/keyrings./.gnome2/ Keyrings/login.keyring./.dbus/session-bus./.dbus/session-bus/dcd26acd87eabb5cc6f2133500000028-0./.gnote/addins ./.mozilla/plugins./.mozilla/extensions./.gnupg/pubring.gpg./.cache/ Event-sound-cache.tdb.dcd26acd87eabb5cc6f2133500000028.i386-redhat-linux-gnu./.pulse/dcd26acd87eabb5cc6f2133500000028-card-database.tdb./name./.gconf/desktop./.gconf/desktop/gnome./.gconf/ Desktop/gnome/accessibility

-perm   Find files according to their permissions

[[email protected] ~]$ find . -perm 755 -print  //Find Permissions 755 files. Gnome2./.gnome2/nautilus-scripts./.fontconfig./.mozilla./.mozilla/plugins./.mozilla/extensions./downloads./. cache./.local./.local/share./.local/share/applications./.nautilus./.config./.config/gnome-session./.config/ Gnome-session/saved-session./.config/gnome-disk-utility./.config/gnome-disk-utility/ata-smart-ignore./ templates./documents./music./pictures./public./videos./desktop//Note the usage of OK and exec [[email protected] ~]$  find -perm -007 -ok -l{} \;  //   #查所有用户都可读写执行的文件同-perm  777< -l{} ... ./.pulse/dcd26acd87eabb5cc6f2133500000028-runtime > ?  yfind:  '-l./.pulse/dcd26acd87eabb5cc6f2133500000028-runtime ': no such file or  Directory[[email protected] ~]$ find -perm -007 -exec -l{} \;find:   '-l./.pulse/dcd26acd87eabb5cc6f2133500000028-runtime ':  no such file or directory 

-user Find files According to the owner of the file

[Email protected] ~]$ Find/-user ningning/proc/14301/task/14301/cwd/proc/14301/task/14301/root/proc/14301/task/ 14301/exe/proc/14301/task/14301/mounts/proc/14301/task/14301/mountinfo/proc/14301/task/14301/clear_refs/proc/ 14301/task/14301/smaps/proc/14301/task/14301/pagemap/proc/14301/task/14301/attr/proc/14301/task/14301/attr/ current/proc/14301/task/14301/attr/prev/proc/14301/task/14301/attr/exec/proc/14301/task/14301/attr/fscreate/ proc/14301/task/14301/attr/keycreate/proc/14301/task/14301/attr/sockcreate/proc/14301/task/14301/wchan/proc/ 14301/task/14301/stack/proc/14301/task/14301

-group Find files according to the group to which the files belong

Find: '/PROC/27825/FD/5 ': No such file or directory/proc/27825/fdinfo/proc/27825/fdinfo/0/proc/27825/fdinfo/1/proc/ 27825/fdinfo/2/proc/27825/fdinfo/3/proc/27825/fdinfo/4find: '/PROC/27825/FDINFO/5 ': No such file or directory/proc/ 27825/ns/proc/27825/ns/net/proc/27825/ns/uts/proc/27825/ns/ipc/proc/27825/ns/mnt/proc/27825/ns/pid/proc/27825/ Net/proc/27825/environ/proc/27825/auxv

Find/home-nouser lists files or directories in/home that are not local users
Find/home-nogroup lists files or directories in/home that are not part of a local group

Find/home-used-2 lists files or directories that have been accessed within 2nd after the file or directory has been altered
Find/home-user CNSCN lists files or directories in the/home directory that belong to the user Cnscn

Find/-nouser files that belong to obsolete users in the system

[[email protected] ~]$ Find/-nouserfind: '/proc/1356/fd ': Permission deniedfind: '/proc/1356/fdinfo ': Permission denied Find: '/proc/1356/ns ': Permission deniedfind: '/proc/1357/task/1357/fd ': Permission deniedfind: '/proc/1357/task/1357 /fdinfo ': Permission deniedfind: '/proc/1357/task/1357/ns ': Permission deniedfind: '/proc/1357/fd ': Permission Deniedfind: '/proc/1357/fdinfo ': Permission deniedfind: '/proc/1357/ns ': Permission deniedfind: '/proc/1382/task/1382 /FD ': Permission denied

-type finding a file of a type

B-Block device files

Catalog D

C-Character device files

P Pipeline File

L Link Character file

F Common Files

[[Email protected] ~]$ find -type d -print]. /.gvfs./.gnome2./.gnome2/keyrings./.gnome2/panel2.d./.gnome2/panel2.d/default./.gnome2/panel2.d/default/ Launchers./.gnome2/nautilus-scripts./.dbus./.dbus/session-bus./.gnote./.gnote/addins./.ssh./.fontconfig./. mozilla./.mozilla/plugins./.mozilla/extensions./downloads./.gnupg./.cache[[email protected] ~]$  find -type f -exec -l{} \;   //See all common Files under directory find:  '-L./.DMRC ' : no such file or directoryfind:  '-l./.xsession-errors ': No such  file or directoryfind:  '-l./.gnome2/keyrings/login.keyring ': no such file  or directoryfind:  '-l./.dbus/session-bus/dcd26acd87eabb5cc6f2133500000028-0 ':  No such  file or directoryfind:  '-l./.gnote/36595867-4cc7-4b1f-b298-b25e9c2080ac.note ':  no  such file or directoryfind:  '-L./.GNOTE/9D4D7c5c-d46e-42eb-8d7f-ed5921568770.note ': no such file or directoryfind:  '-l./. Bash_profile ': no such file or directoryfind:  '-l./.fontconfig/ 3830d5c3ddfd5cd38a049b759396e72e-le32d4.cache-3 ':  no such file or directoryfind:   '-L./.BASHRC ': no such file or directoryfind:  '-l./.pulse-cookie ':  No  such file or directory

-size N:[c]   Find files with a file length of n blocks, with a C-time representation of the file in bytes.

[[email protected] ~]$ find . -size 1000c -print  //Find Files of length 1000c [[email protected] ~]$ find . -size +1000c -print    // Look for files longer than 1000c. /.xsession-errors./.gvfs./.gnome2./.gnome2/keyrings./.gnome2/panel2.d./.gnome2/panel2.d/default./.gnome2/ panel2.d/default/launchers./.gnome2/nautilus-scripts./.dbus./.dbus/session-bus./.gnote./.gnote/ 36595867-4cc7-4b1f-b298-b25e9c2080ac.note./.gnote/addins./.gnote/9d4d7c5c-d46e-42eb-8d7f-ed5921568770.note./. Ssh./.fontconfig./.fontconfig/3830d5c3ddfd5cd38a049b759396e72e-le32d4.cache-3./.mozilla./.mozilla/plugins./. Mozilla/extensions./downloads./.gnupg[[email protected] ~]$ find . -size +10  -print   //Check length expires 10 blocks of files (1 blocks = 512 bytes)./.gnupg/gpg.conf./.cache/ event-sound-cache.tdb.dcd26acd87eabb5cc6f2133500000028.i386-redhat-linux-gnu./.pulse/ Dcd26acd87eabb5cc6f2133500000028-device-volumes.tdb./.pulse/dcd26acd87eabb5cc6f2133500000028-stream-volumes.tdb./.local/share/gvfs-metadata/home-6751745f.log./.gconfd/saved_state./. Gstreamer-0.10/registry.i686.bin./desktop/gnome-terminal.desktop

Find a file with a file size of 5556 bytes

[[email protected] ~]$ find/ningning-size-5557c-size +5555c-exec ls-ld{} \;

Use of common find commands in Linux