Linux commands: File or directory lookup--find

Syntax: Find Path-option [-print] [-exec-ok command] {} \;

#-print output of the found file to standard output

#-exec command {} \; The command operation-----The file to be traced, with a space between {} and \;

#-ok and-exec are the same, except to consult the user before operation

-name filename #查找名为filename的文件

-perm #按执行权限来查找

-user username #按文件属主来查找

-group GroupName #按组来查找

-mtime-n +n #按文件更改时间来查找文件,-n means n days or less, +n means n days ago

-atime-n +n #按文件访问时间来查GIN: 0px ">-perm

-user username #按文件属主来查找

-group GroupName #按组来查找

-mtime-n +n #按文件更改时间来查找文件,-n means n days or less, +n means n days ago

-atime-n +n #按文件访问时间来查找文件,-n means n days or less, +n means n days ago

-ctime-n +n #按文件创建时间来查找文件,-n means n days or less, +n means n days ago

-nogroup #查无有效属组的文件 that the genus of the file does not exist in the/etc/groups

-nouser #查无有效属主的文件, that is, the owner of the file does not exist in the/etc/passwd

-newer F1!f2 #找文件,-n means n days or less, +n means n days ago

-ctime-n +n #按文件创建时间来查找文件,-n means n days or less, +n means n days ago

-nogroup #查无有效属组的文件 that the genus of the file does not exist in the/etc/groups

-nouser #查无有效属主的文件, that is, the owner of the file does not exist in the/etc/passwd

-newer F1!F2 #查更改时间比f1新但比f2旧的文件

-type b/d/c/p/l/f #查是块设备, directories, character devices, pipelines, symbolic links, plain files

-size N[c] #查长度为n块 [or N-byte] files

-depth #使查找在进入子目录前先行查找完本目录

-fstype #查更改时间比f1新但比f2旧的文件

-mount #查文件时不跨越文件系统mount点

-follow #如果遇到符号链接文件, just follow the file that the link refers to

-cpio #对匹配的文件使用cpio命令, back them up to tape devices

-prune #忽略某个目录

Example:

#在 the. txt file in $HOME and displays

[Email protected] ~]# Find ~-name "*.txt"-print

[[email protected] ~]# find. -name "*.txt"-print

#对匹配的文件使用cpio命令, back them up to tape devices

[[email protected] ~]# find. -name "[a-z]*"-PRI26NBSP;

#查以大写字母开头的文件

[[email protected] ~]# find. -name "[a-z]*"-print

#查以host开头的文件

[Email protected] ~]# find/etc-name "host*"-print

#查以两个小写字母和两个数字开头的txt文件

[[email protected] ~]# find. -name "[A-z][a-z][0--9][0--9].txt"-print

[[email protected] ~]# find. -perm 755-print

#查所有用户都可读写执行的文件同-perm 777

[[email protected] ~]# find. -perm-007-exec ls-l {} \;

Print directory Structure

[[email protected] ~]# find. -type D-print

Print non-catalog files

[[email protected] ~]# find.    ! -type D-print

Because grep cannot recursively search subdirectories, it can be used in conjunction with find. Find a string in the. h file in all/usr/include subdirectories Af_inef6

[[email protected] ~]# find/usr/include-name ' *.h '-exec grep af_inef6 {} \;

[[email protected] ~]# find. -type L-print

#查长度大于1Mb的文件

[[email protected] ~]# find. -size +1000000c-print

# Check for files of length 100c

[[email protected] ~]# find. -size 100c-print

#看是否存在cnscn用户

[[email protected] ~]# find/etc-name "passwd*"-exec grep "Cnscn" {} \;

===========================================================================================

Find-name april* Find files starting with April in the current directory

Find-name april* Fprint file finds files starting with April in the current directory and outputs the results

Find-name ap*-o-name may* Find files that start with an AP or May

Find/mnt-name tom.txt-ftype vfat to find files with the name Tom.txt and file system type VFAT under/MNT

Find/mnt-name T.txt! -ftype VFAT under/mnt to find files with the name Tom.txt and file system type not VFAT

Find/tmp-name wa*-type L Find a file with a type of symbolic link at/tmp that begins with the name WA

Find/home-mtime-2 in/home search for files that have changed in the last two days

find/home-atime-1 checked files accessed within 1 days

Find/home-mmin +60 The files that were changed 60 minutes ago at/home

Find/home-amin +30 Check the files that were accessed last 30 minutes ago

Find/home-newer Tmp.txt in/home check update time than tmp.txt files or directories

Find/home-anewer tmp.txt a file or directory that is accessed more than tmp.txt near/home

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/home-uid +501 lists files or directories with a user's ID greater than 501 in the/home directory

Find/home-group CNSCN list files or directories in/home with group CNSCN

Find/home-gid 501 lists files or directories with a group ID of 501 in/home

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-name tmp.txt-maxdepth 4 Lists the Tmp.txt in/home with a depth of up to 3 layers

Find/home-name tmp.txt-mindepth 3, starting from the 2nd floor.

Find/home-empty finding a file size of 0 or an empty directory

Find/home-size +512k files larger than 512k

find/home-size-512k files less than 512k

Find/home-links +2 Check hard connections more than 2 files or directories

Find/home-perm 0700 Check the file or directory with permission 700

Find/tmp-name tmp.txt-exec Cat {} \;

Find/tmp-name tmp.txt-ok rm {} \;

Find/-amin-10 # finds files accessed in the last 10 minutes of the system

Find/-atime-2 # finds files accessed in the last 48 hours of the system

Find/-empty # finds files or folders that are empty in the system

Find/-group Cat # finds files that belong to Groupcat in the system

Find/-mmin-5 # finds files that have been modified in the last 5 minutes of the system

Find/-mtime-1 #查找在系统中最后24小时里修改过的文件

Find/-nouser #查找在系统中属于作废用户的文件

Find/-user Fred #查找在系统中属于FRED这个用户的文件

Check all the normal files in the current directory

[[email protected] ~]# find. -type f-exec ls-l {} \;

-rw-r--r--1 root root 34928 2003-02-25./conf/httpd.conf

-rw-r--r--1 root root 12959 2003-02-25./conf/magic

-rw-r--r--1 root root 2003-02-25./conf.d/readme

Check all the normal files in the current directory and use the LS-L command in the-e x E C option to list them

Second, the use of the Linux find command

1. Basic usage:

Find/-name file name

Find ver1.d ver2.d-name ' *.c '-print finding ver1.d,ver2.d *.c files and printing

Find. -type D-print from the current directory, finds only the directory, and when found, prints the path name. Can be used to print the directory structure.

2. No Error Lookup:

Find/-name Access_log 2 >/dev/null

3. Search by Size:

Find/-size 1500c (look for a 1,500-byte file, c for bytes)

Find/-size +1500c (finds files larger than 1,500 bytes, + represents greater than)

Find/-size +1500c (finds files less than 1,500 bytes in size-Indicates less than)

4. By Time:

Find/-amin n last N minutes

Find/-atime n last n days

Find/-cmin n last N minutes change state

Find/-ctime N last n days change state

5. Other:

Find/-empty blank file, blank folder, folder without subdirectories

Find/-false files that are always wrong in the lookup system

Find/-fstype Type Locate the file that exists in the specified file system, such as type ext2

Find/-gid n set of files with ID n

Find/-group gname group file named Gname

Find/-depth N first search for file contents in a certain level of specified directory

Find/-maxdepth levels in a hierarchical directory in descending order

6. Logic

-and conditions and-or conditions or

7. Finding strings

Find. -name ' *.html '-exec grep ' mailto: ' {}

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