A.envsetup

B.history

C.bashconf

D.set

E.setsh

A.filea.txtis a symbolic link whose permissions are a fixed value which cannot be charged.

B.filea.txthas the SetUID bit set which imposes the restriction that only the rootuser can make changes to the file.

C.filea.txtis owned by another user and a regular user cannot change the permissions of another user's file.

D.filea.txthas the sticky bit set and a regular user cannot remove this permission.

E.filea.txtis a hard link whose permissions are inherited from the target and cannot be set directly.

A.init reinit

B.telinit 7

C.reinit

D.telinit q

E.initreload

A.By running xfs_repairon the file system

B.By mounting the file system with the option xfs_repair

C.By using mount -fto force a mount of the file system

D.By running xfsadmin repairon the file system

E.By running xfsckon the file system