功用介绍：

locate指令其实是find -name的另一种写法，可是要比后者快得多，原因在于它不查找详细目录，而是查找一个数据库/var/lib/locatedb，值得注意的是：版别不同，会有所不同。有的版别方位是 /var/lib/mlocate/mlocatedb ，还有的是/var/lib/slocate/slocate.db ，这个数据库中含有本地一切文件信息。Linux体系主动创立这个数据库，而且每天主动更新一次，所以运用locate指令查不到最新变动过的文件。为了防止这种状况，能够在运用locate之前，先运用updatedb指令，手动更新数据库。

语法格局：locate [参数] [款式]

常用参数：

-d<目录>或–database=<目录>

指定数据库地点的目录

–help

显现协助

–version

显现版别信息

参阅实例：

显现协助 ：

[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 网易天天爱彩票下载-locate指令-快速查找文件或目录print entries for currently existing files
 -L, --follow follow trailing symbolic links when checking file
 exis网易天天爱彩票下载-locate指令-快速查找文件或目录tence (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 trail网易天天爱彩票下载-locate指令-快速查找文件或目录ing 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.网易天天爱彩票下载-locate指令-快速查找文件或目录com.
显现版别信息：
[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 provide网易天天爱彩票下载-locate指令-快速查找文件或目录d with NO WARRANTY, to the extent permitted by law.

查找/etc目录下一切以sh最初的文件：

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

查找/etc目录下以k最初的文件：

[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

查找和pwd相关的一切文件：

[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/ma网易天天爱彩票下载-locate指令-快速查找文件或目录n/man3/lckpwdf.3.gz
 /usr/share/man/man3/ulckpwdf.3.gz
 /usr/share/man/man8/unix_chkpwd.8.gz
 /usr/sh陈亚格are/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