User, Group, and Other Permissions

Modifying Permissions with chmod

The chmod command is used to change the permissions of a file or directory.

chmod permissions file

• permissions: This is where you specify the permissions you want to set. It can be represented using symbols (e.g., u+rw for adding read and write permissions for the user) or in octal form (e.g., 755 for setting permissions).
• file: This is the name of the file or directory you want to modify.

For example, to give read and write permissions to the user, you can use:

chmod u+rw file.txt