A.It mounts all filesystems listed in /etc/fstab which have the option auto set.

B.It mounts all available filesystems onto the current directory.

C.It mounts all user mountable filesystems for thecurrent user.

D.It mounts all filesystems listed in /etc/fstab which have the option noauto set.

E.It shows all mounted filesystems.

A./proc/inittab

B./proc/keys

C./etc/keys

D./etc/reboot

E./etc/inittab

A.sed 's/bob, Bob/' letter > newletter

B.sed '/bob/Bob' letter > newletter

C.sed 's/bob/Bob/g' letter > newletter

D.sed's/bob/Bob' letter > newletter

E.sed s/bob/Bob/ letter < newletter

A.{root,user,admin}-can-??-this.txt

B.root*can?do-this.{txt,odt}

C.root*can*do??this.txt

D.r[oOoO]t-can-do*.txt

E.root***{can,may}-do-this.[tT][xX][tT]