Shell programming (2)-Use Find and xargs

1,Find Command Options
The f I n d command has many options or expressions. Each option follows a horizontal bar -.
-Name: searches for files by file name.
-Perm searches for files based on the file permissions.
-Prune can use this option to make the f I n d command not be found in the currently specified directory. If the-d e p t h option is used at the same time, the-P r u n e option is ignored by the f I n d command.
-The user searches for files based on the file owner.
-The group searches for files based on the group to which the files belong.
-Mtime-N + N: Find the file based on the file change time.-N indicates that the file change time is earlier than N days, and + N indicates that the file change time is earlier than N days. The f I n d command also has the-a t I m e and-C t I m e options, but they are similar to the-M t I m e option, so here we will only introduce the-M t I m e option.
-Nogroup: Find the file with no valid group, that is, the group to which the file belongs does not exist in/e t C/g r o u p S.
-Nouser: Find the file without a valid owner, that is, the owner of the file does not exist in/e t C/p a s w d.
-Newer file1! File2 searches for files whose change time is newer than file f I l e 1 but older than file f I L E 2.
-Type: search for a certain type of files, such:
B-block device files.
D-directory.
C-character device file.
P-MPs queue file.
L-Symbolic Link file.
F-common file.
-Size N [c]: searches for files with a length of N blocks. If a file contains C, the file length is measured in bytes.
-When searching for files, depth first searches for files in the current directory, and then searches for files in its subdirectories.
-Fstype: searches for files in a certain type of file system. These file system types can be found in the configuration file/e t C/f s t a B, this configuration file contains information about the file system in the system.
-Mount does not span the m o u n t point of the file system when searching for files.
-Follow: If the f I n d command encounters a symbolic link file, it traces the file to which the link points.
-Cpio uses the C p I o command for matching files to back up these files to the tape device.

Execute shell commands using exec or OK. The E x e c option is followed by the command to be executed, followed by a pair of characters {}, a space, a/, and a semicolon. 2, X a rg s command: The f I n d command passes the matched file to the X A RG s command, while the X A RG s command only obtains part of the file, not all of it at a time, unlike the-e x e c option. In this way, it can first process the first part of the obtained files, then the next batch, and continue like this.