Which command adds read permissions for the user alice to the Unix access control list of the file finance.ods?

Question

Options

• Afacl --add alice:r-- finance.ods
• Baddfacl alice:r- finance.ods
• Csmbfacl modify alice=r finance.odt
• Dsetfacl -m user:alice:r finance.ods
• Esetacl --add alice:r finance.ods

• A
  3% (1)
• B
  6% (2)
• D
  90% (28)

Explanation

setfacl -m user:alice:r finance.ods is correct because setfacl is the standard Unix command for modifying ACL entries, the -m flag means "modify/add," and the format user:alice:r correctly specifies the entry type, the named user, and the read permission. A is wrong because facl is not a real command - it's a fabricated near-miss. B (addfacl) doesn't exist at all. C uses smbfacl, which relates to Samba/Windows share permissions, not Unix ACLs - and it also sneaks in the wrong file extension (.odt instead of .ods). E uses setacl, which sounds plausible but is not a real Unix utility; the correct command is setfacl.

Memory tip: Think "set-f-acl" = "set file ACL" - the f stands for file, and -m stands for modify, which is what you do when granting access to a specific user.

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