4-5 Diagnose and Correct File Permission Problems

Question 1

ACL setting troubleshooting tips

Answer 1

Masks should only be set after the ACL is set because the mask is recalculated

chmod will change the mask on ACLs when used

Directories need to have execute permissions in order to change into them or list contents. An X will make sure execute permissions are applied ONLY to directories

Work as the proper user who owns a file

set-uid or set-gid

cp command does not preserve ACL permissions

mv command does preserve the ACL permissions

ACLs use the GID or UID to set permissions. Even if the name is used, it still maps to the GID/UID. If the ID changes for the group or user, the ACLs are not automatically update

Execute permissions on a directory and not a file