What permissions are set by the -m 750 option in the mkdir command?

The -m 750 option in the mkdir command sets the permissions for the newly created directory as follows:

Breakdown of 750:

• First Digit (7): Permissions for the owner of the directory.

  • 4 (read) + 2 (write) + 1 (execute) = 7
  • This means the owner has read, write, and execute permissions.

• Second Digit (5): Permissions for the group.

  • 4 (read) + 1 (execute) = 5
  • This means the group has read and execute permissions, but no write permission.

• Third Digit (0): Permissions for others.

  • 0 means no permissions for others.

Summary:

Using mkdir -m 750 directory_name creates a directory where:

• The owner has full access (read, write, execute).
• The group can read and execute but cannot write.
• Others have no access at all.

This setting is often used for directories that need to be accessible to the owner and a specific group, while keeping them secure from other users. If you have any further questions or need more clarification, feel free to ask!