Which command is used to set the permissions of a file in Linux?

Question

Options

• Achown
• Bchmod
• Cchgrp
• Dsetfacl

• A
  6% (2)
• B
  91% (30)
• D
  3% (1)

Explanation

chmod (change mode) sets file permissions in Linux, controlling read, write, and execute access for the owner, group, and others - for example, chmod 755 file.sh or chmod +x script.sh.

The distractors each handle a related but distinct task: chown changes file ownership (who the file belongs to), chgrp changes the file's group assignment, and setfacl sets Access Control Lists - a more granular permission system layered on top of standard Unix permissions, not the primary mechanism.

Memory tip: Think of the "mod" in chmod as short for modify permissions (the "mode" of a file). If you remember that Unix stores permissions in a field called the file mode, chmod = change mode = change permissions becomes intuitive.

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