Find command Summary and actual combat

Three kinds of time for files:

(1)atime: Access time, refers to the time at which thefile was last read, You can use the touch command to change to the current time;

  2 ctime change time chmod chgrp mv

(3)mtime: Modified time (modify), refers to the time the file content was last modified, Modify the action can make echo Redirect,vi and so on;

Find: Finding directories and files

Find path-command parameters [output FORM]

Parameter description:
path : Tell find where to find what you want,. Indicates the current directory,/represents the root directory
Command Parameters :

-name finds files by file name. 
-perm to find files by file permissions. 
-prune uses this option to make the Find command not be found in the currently specified directory, and if the-depth option is used at the same time, the-prune option is ignored by the Find command. 
-user finds files according to the owner of the file. The 
-group the file according to the group to which the file belongs. 
-mtime-n +n The file changes time to find the file,-n means that the file change time is now less than n days, +n indicates that the file change time is now N days ago. The Find command also has the-atime and-ctime options, but they are all similar to the-mtime option 
, so we'll just describe the-mtime option here. 
-nogroup finds a file that does not have a valid owning group, that is, the group to which the file belongs does not exist in/etc/groups. 
-nouser finds a file without a valid owner, that is, the owner of the file does not exist in/etc/passwd. 
-newer file1! File2 find changed time than file File1 new but older file than file file2. 
-type finds a file of a certain type, such as: 
 B-block device file. 
 D-Directory. The 
 C-character device file. 
 P-pipe file. The 
 L-Symbolic link file. 
 F-Normal file. 
 S-socket file 
-size N[c] finds files with a file length of n, with C indicating the length of the file in bytes. 
-depth When looking for a file, first finds the file in the current directory and then finds it in its subdirectories. 
-maxdepth Find the maximum number of directory layers, such as 1, that is, find only one level of directory 
-fstype find files located in a type of file system, which can usually be found in the configuration file 
/etc/fstab. This configuration file contains information about the file system in the system. 
-mount does not cross the file system mount point when locating files. 
-follow If the find command encounters a symbolic link file, it tracks to the file that the link points to. 
-cpio Use the cpio command for matching files to back up these files to the tape device. 

Output Form : Many output forms,-print,-printf,-print0,-exec,-ok,-ls

-print output of the found 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.

See what the system has changed over the last 24 hours:

Find/-mtime 0

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Find files under/etc, if newer than/etc/passwd list:

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Find out what changed in this directory in the last 24 hours:

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Search for files belonging to Funs under/home:

Find/home-user funs

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To find a document named code:

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Find files with the file type socket type in the/var directory:

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Search documents for files that contain sgid or suid or Sbit attributes:

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List the last command with LS:

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Find files larger than 1000k in/etc:

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To find the directory under the current directory:

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Find /Home down to a files that begin with:

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will be find/var-name ap* The files found are written to file1 Medium:

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Find / var down to AP beginning or m files that begin with:

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Find out / var down to AP start and type files for the directory:

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Find find/home/funs/learn/test files accessed within the next day of the directory:

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Find /home/funs/learn under - files that were changed before minutes

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Find files that belong to funs in your system :

Find/-group Funs

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Find command Summary and actual combat