Differences between chown and chmod

Chown modify user and user group attributes of files and folders

1. The owner of the HH. c file to be modified. All users whose names are modified to sakia

Chown sakia HH. c

In this way, the user access permission of HH. C is applied to sakia as the owner.

2. Change the owner and group of the/tmp/sco directory to sakia and group net.

Chown-r sawn: net/tmp/sco

Chmod modifies the read/write execution attributes of files and folders

1. Change the HH. c file to writable, readable, and executable.

Chmod 777 HH. c

To modify the attributes of all files in a directory to writable and executable

Chmod 777 *.*

Replace the folder name with the suffix.

Similarly, if you want to modify the attributes of all HTM files

Chmod 777 *. htm

2. Change/tmp/sco directory to writable and readable and executable

Chmod 777/tmp/sco

To modify the attributes of all folders in a directory to writable and executable

Chmod 777 *

Replace the folder name *.

To modify the attributes of all files and folders in/tmp/sco and Their subfolders to writable, readable, and executable

Chmod-r 777/tmp/sco

Writeable W = 4

Readable r = 2

Executable x = 1

777 means that you have full permissions. Users and group permissions can be freely combined as needed