find & locate
find
#Find the file with the specified file name (not case sensitive)
find -iname "MyProgram.c"
#Execute a command on the found file
find -iname "MyProgram.c" -exec md5sum {} \;
#Find all empty files in the home directory
find ~ -empty
#-mtime days #Finds files that are days old
find . -mtime +10 -mtime -13
#-size num .
find . -size +1M
#-type d | -type f
#-newer
find . -type d -newer file.txt-amin<minutes> Finds files or directories that have been accessed at a specified time, in minutes.
-anewer<reference file or directory> Finds files or directories whose access time is closer to the current file than the specified file or directory.
-atime<24 hours> Finds files or directories that have been accessed at a specified time. The unit is calculated in 24 hours.
-cmin<minutes> Finds files or directories that were changed at the specified time.
-cnewer<reference file or directory> Finds a file or directory whose change time is closer to the current file than the specified file or directory.
-ctime<24 hours> Finds the file or directory that was changed at the specified time, in 24 hours.
-daystart Calculates the time from today.
-depth Looks up from the deepest subdirectory in the specified directory.
-expty Look for a file with a file size of 0 Byte, or an empty directory with no subdirectories or files under the directory.
-exec<execute instruction> Assuming that the return value of the find instruction is True, the instruction is executed.
-false Sets the return value of the find command to False.
-fls<list file> The effect of this parameter is similar to specifying the "-ls" parameter, but will save the result as the specified list file.
-follow Excludes symbolic links.
-fprint<list file> The effect of this parameter is similar to specifying the "-print" parameter, but will save the result to the specified list file.
-fprint0<list file> The effect of this parameter is similar to specifying the "-print0" parameter, but will save the result to the specified list file.
-fprintf<list file><output format> The effect of this parameter is similar to specifying the "-printf" parameter, but will save the result to the specified list file.
-fstype<filesystem type> Find only files or directories under this filesystem type.
-gid<group ID> Finds a file or directory that matches the specified group ID.
-group<group name> Finds a file or directory that matches the specified group name.
-help or --help online help.
-ilname<template style> The effect of this parameter is similar to specifying the "-lname" parameter, but ignoring the difference in character case.
-iname<template style> The effect of this parameter is similar to specifying the "-name" parameter, but ignoring the difference in character case.
-inum<inode number> Finds a file or directory that matches the specified inode number.
-ipath<template style> The effect of this parameter is similar to specifying the "-ipath" parameter, but ignoring the difference in character case.
-iregex<template style> The effect of this parameter is similar to specifying the "-regexe" parameter, but ignoring the difference in character case.
-links<number of connections> Finds files or directories that match the specified number of hard links.
-iname<template style> Specifies a string as a template style for finding symbolic links.
-ls Assuming the return value of the find command is True, the file or directory name is listed to standard output.
-maxdepth<directory level> Sets the maximum directory level.
-mindepth<directory level> Sets the minimum directory level.
-mmin<minutes> Finds files or directories that have been changed at a given time, in minutes.
-mount This parameter has the same effect as specifying "-xdev".
-mtime<24 hours> Finds files or directories that have been changed at the specified time, in 24 hours.
-name<template style> Specify a string as a template style for finding files or directories.
-newer<reference file or directory> Finds a file or directory whose change time is closer to the current file than the specified file or directory.
-nogroup Finds files or directories that do not belong to the local host group ID.
-noleaf Do not consider the directory to have at least two hard links.
-nouser Finds files or directories that are not part of the local host user ID.
-ok<execute command> The effect of this parameter is similar to specifying the "-exec" parameter, but the user will be asked before executing the command. If "y" or "Y" is answered, the execution instruction will be discarded.
-path<template style> Specifies the string as the template style for finding the directory.
-perm<permission value> Finds a file or directory that matches the specified permission value.
-print Assuming the return value of the find command is True, the file or directory name is listed to standard output. The format is a name for each column, and each name has a "./" string before it.
-print0 Assuming the return value of the find command is True, the file or directory name is listed to standard output. The format is all on the same line.
-printf<output format> Assuming the return value of the find command is True, the file or directory name is listed to standard output. The format can be specified by itself.
-prune does not look for strings as a template style for finding files or directories.
-regex<template style> Specify a string as a template style for finding files or directories.
-size<file size> Finds files that match the specified file size.
-true Sets the return value of the find command to True.
-typ<file type> Finds only files that match the specified file type.
-uid<user ID> Finds a file or directory that matches the specified user ID.
-used <number of days> Finds the file or directory that was accessed at a specified time after the file or directory was changed. The unit is calculated in days.
-user<owner name> Finds a file or directory that matches the specified owner name.
-version or --version displays version information.
-xdev limits the scope to the preemptive file system.
-xtype<file type> The effect of this parameter is similar to specifying the "-type" parameter, except that it checks for symbolic links.locate
Lists files that match pattern.
Faster than the find command.
Queries an index.
Results are not in real time.
May not be enabled on all systems.
locate命名可以显示某个指定文件（或一组文件）的路径，它会使用由updatedb创建的数据库
下面的命令会显示系统中所有包含crontab字符串的文件
$ locate crontab
/etc/anacrontab
/etc/crontab
/usr/bin/crontab
/usr/share/doc/cron/examples/crontab2english.pl.gz
/usr/share/man/man1/crontab.1.gz
/usr/share/man/man5/anacrontab.5.gz
/usr/share/man/man5/crontab.5.gz
/usr/share/vim/vim72/syntax/crontab.vimLast updated