The "chmod" command is a Linux/Unix command used to change the permissions of files or directories. The command is short for "change mode". With "chmod", you can specify who can read, write, and execute a file or directory. Here's the basic syntax for the "chmod" command:
chmod [permissions] [filename/directory]
Symbolic notation:
chmod u+rwx file.txt // add read, write, and execute permission for the owner
chmod g-w file.txt // remove write permission for the group
chmod o=r file.txt // set read permission for others
Numeric notation:
r=4, w=2, x=1
chmod 750 file.txt // set read, write, and execute permission for the owner, read and execute permission for the group, and no permission for others
chmod 644 file.txt // set read and write permission for the owner, and read-only permission for the group and others
chmod 777 file.txt // set read, write, and execute permission for everyone (not recommended for security reasons)
