A.:UPPER:

B.[A-Z]

C.!a-z

D.%C

E.{AZ}

A.sed's/bob/Bob/g' data

B.sed'/bob/Bob' data

C.sed's/bob,Bob/' data

D.sed's/bob/Bob/' data

E.sed'/bob/Bob/' data

A.6

B.0

C.1

D.3

E.5

A.top

B.

C.uname -u

D.up

E.time --up

A.systemd ignores any manual mounts which are not done using the systemctl mountcommand

B.systemctl unmountmust be used to remove the mount because system opens a file descriptor on the mount point

C.The command systemctl mountsynccan be used to create a mount unit based on the existing mount

D.systemd automatically generates a mount unit and monitors the mount point without changing it

E.Unless a systemd mount unit is created, systemd unmounts the file system after a short period of time