A.The result of the command defines if the next command will be run.

B.The command's output is redirected to/dev/null.

C.Thecommand is run in background of the current shell.

D.The command is run as a direct child of theinitprocess.

A.{AZ}

B.!a-z

C.[A-Z]

D.:UPPER:

E.%C

A.yum --query --all

B.yum --list --installed

C.rpm --query --list

D.rpm --list --installed

E.rpm --query --all

A./

B.r

C.?

D.F

A.:n

B.:r

C.:w

D.:e