Grant Access with POSIX ACLs

Two users need different access to the shared directory /projects, and plain owner/group/other permissions can't express 'alice full, bob read-only' at once. That's what POSIX ACLs are for.

Users alice and bob already exist. Grant, on /projects:

• alice — read, write, execute (rwx)

• bob — read, execute (r-x)

Check your work with getfacl /projects. Grading reads the ACL entries directly.