Linux command: Find

1, Command introduction:

Find is powerful for searching files under the path specified by the system, but it is time-consuming to traverse the entire system.

2. Command format:

Find path [options] [Print-exec-ok ...]

3. Command parameters:

The-print:find command outputs the matched 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.

-name finds files by file name.

-perm to find files according to file permissions.

-prune Use this option to have the Find command not be found in the currently specified directory, and if you use the-depth option at the same time,-prune will be ignored by the Find command.

-user Search for files according to the owner of the file.

-group finds files according to the group to which the files belong.

-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 means that the file change time is now N days ago. The Find command also has the-atime and-ctime options, but they both and the-m time option.

-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 the/etc/passwd.

-newer file1! File2 look for a file that changes time than the file File1 new but older than the file file2.

-type find a file of a certain type, such as:

B-block device files.

D-Directory.

C-character device file.

P-Pipeline file.

L-Symbolic link file.

F-Normal file.

-size N:[c] finds files with a file length of n blocks, with C indicating the length of the file in bytes. -depth: When looking for a file, first find the file in the current directory, and then look in its subdirectories.

-fstype: Find files located in a file system of a certain type, these file system types can usually be found in the configuration file/etc/fstab, which contains information about the file system in this 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.

In addition, the following three differences:

-amin N Find the last n minutes of files accessed in the system

-atime N Find the last n*24 hour Access file in the system

-cmin n Find files in the last n minutes of the system changed file status

-ctime n Find files that have changed file status in the last n*24 hours of the system

-mmin n Find files that have changed file data in the last N minutes of the system

-mtime n Find files that have changed file data for the last n*24 hours in the system

Linux command: Find