locate command: a faster file search tool than find -name

Features:

The locate command is obviously another way of writing find-name, and it is much faster than the former linux vi. The reason is that it does not search a specific directory, but searches a database /var/lib/locatedb. It is worth noting that : Different versions will vary. Some versions are located in /var/lib/mlocate/mlocatedbThe directory where the Linux search file is located, while others are in /var/lib/slocate/slocate.db. This database is rich in information about all local files. The Linux system manually creates this databaseThe directory where the Linux search file is located, but it is updated manually every night, so the latest changed files cannot be found using the locate command. In order to prevent these situations in redhat linux, you can use the updatedb command to automatically update the database before using locate.

Sentence format: locate[parameter][style]

Commonly used parameters:

-d or –database=

Specify the directory where the database is located

–help

Show help

–version

Display version information

Reference example:

Show help:

[root@linuxcool ~]# locate --help
 Usage: locate [OPTION]… [PATTERN]…
 Search for entries in a mlocate database.
 -A, --all only print entries that match all patterns
 -b, --basename match only the base name of path names
 -c, --count only print number of found entries
 -d, --database DBPATH use DBPATH instead of default database (which is
 /var/lib/mlocate/mlocate.db)
 -e, --existing only print entries for currently existing files
 -L, --follow follow trailing symbolic links when checking file
 existence (default)
 -h, --help print this help
 -i, --ignore-case ignore case distinctions when matching patterns
 -l, --limit, -n LIMIT limit output (or counting) to LIMIT entries
 -m, --mmap ignored, for backward compatibility
 -P, --nofollow, -H don't follow trailing symbolic links when checking file
 existence
 -0, --null separate entries with NUL on output
 -S, --statistics don't search for entries, print statistics about each
 used database
 -q, --quiet report no error messages about reading databases
 -r, --regexp REGEXP search for basic regexp REGEXP instead of patterns
 --regex patterns are extended regexps
 -s, --stdio ignored, for backward compatibility
 -V, --version print version information
 -w, --wholename match whole path name (default)
 Report bugs to mitr@redhat.com.
显示版本信息：
[root@linuxcool ~]# locate --version
 mlocate 0.26
 Copyright (C) 2007 Red Hat, Inc. All rights reserved.
 This software is distributed under the GPL v.2.
 This program is provided with NO WARRANTY, to the extent permitted by law.

Search for all files starting with sh in the /etc directory:

[root@linuxcool ~]# locate /etc/sh
 /etc/shadow
 /etc/shadow-
 /etc/shells

Search for files starting with k in the /etc directory:

[root@linuxcool ~]# locate /etc/k
 /etc/kdump.conf
 /etc/kernel
 /etc/krb5.conf
 /etc/krb5.conf.d
 /etc/ksmtuned.conf
 /etc/kernel/postinst.d
 /etc/kernel/postinst.d/51-dracut-rescue-postinst.sh

Find all files related to pwd:

[root@linuxcool ~]# locate pwd
 /boot/extlinux/pwd.c32
 /etc/.pwd.lock
 /usr/bin/pwd
 /usr/bin/pwdx
 /usr/include/pwd.h
 /usr/lib/modules/3.10.0-514.el7.x86_64/kernel/drivers/watchdog/hpwdt.ko
 /usr/lib64/cracklib_dict.pwd
 /usr/lib64/python2.7/lib-dynload/spwdmodule.so
 /usr/sbin/unix_chkpwd
 /usr/share/cracklib/cracklib-small.pwd
 /usr/share/cracklib/pw_dict.pwd
 /usr/share/man/man0p/pwd.h.0p.gz
 /usr/share/man/man1/pwd.1.gz
 /usr/share/man/man1/pwdx.1.gz
 /usr/share/man/man1p/pwd.1p.gz
 /usr/share/man/man3/lckpwdf.3.gz
 /usr/share/man/man3/ulckpwdf.3.gz
 /usr/share/man/man8/unix_chkpwd.8.gz
 /usr/share/man/overrides/de/man1/pwdx.1
 /usr/share/man/overrides/fr/man1/pwdx.1
 /usr/share/man/overrides/uk/man1/pwdx.1
 /usr/share/syslinux/pwd.c32
 /usr/src/kernels/3.10.0-514.el7.x86_64/include/config/hpwdt
 /usr/src/kernels/3.10.0-514.el7.x86_64/include/config/hpwdt/nmi
 /usr/src/kernels/3.10.0-514.el7.x86_64/include/config/hpwdt/nmi/decoding.h

The above is the detailed content of locate command: a faster file search tool than find -name. For more information, please follow other related articles on the PHP Chinese website!