A.

B.dpkg -P pkgname

C.dpkg -L pkgname

D.dpkg -v pkgname

E.dpkg -r pkgname

A.When the ring buffer is explicitly reset using the command dmesg --clear

B.When the ring buffer is read using dmesg without any additional parameters

C.When the system is shut down or rebooted

D.When a configurable amount of time, 15 minutes by default, has passed

E.When the kernel loads a previously unloaded kernel module

A./boot/grub/i386-pc/1vm.mod

B./boot/grub/stages/stage0

C./boot/grub/linux/vmlinuz

D./boot/grub/grub.cfg

E./boot/grub/fstab

A.tr '\r' '\n' userlist.txt newlist.txt

B.tr '\r\n' '' <userlist.txt> newlist.txt

C.tr -c '\n\r' '' <newlist.txt> userlist.txt

D.tr -s '/^M/^J/' userlist.txt newlist.txt

E.tr -d '\r' < userlist.txt > newlist.txt

A.-rw-------1 11531 Jun 5 22:45 /etc/passwd

B.-rw-------1 rootroot531 Jun 5 22:45 /etc/passwd

C.-rw-r--r--1 rootroot531 Jun 5 22:45 /etc/passwd

D.-rw-r--r--1 11531 Jun 5 22:45 /etc/passwd