Which of the following command can you execute to count the number of lines in a file ?

A. Alt+Function Key
B. Ctrl+Function Key
C. Ctrl+Alt+Del
D. Alt+a+w+Function Key

A. 127 networks and 16,777,216 nodes per network
B. 16,384 networks and 65,534 nodes per network
C. 2,097,152 networks and 254 nodes per network
D. All of the above

A. chmod 555 note
B. chmod 666 note
C. chmod 444 note
D. chmod 333 note

A. $!
B. $#
C. 0
D. $*

A. ls | wc
B. ls -l | wc -l
C. ls | wc -w
D. ls | ws -c

A. cdir
B. chdir
C. changedir
D. cd