Basic of linux unix

A. cd p
B. cd p?
C. cd p*
D. cd [p]

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

A. executable permission only
B. write and executable permissions
C. both read and executable permissions.
D. both read and write permissions

A. > symbols
B. >> symbols
C. < symbols
D. << symbols

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

A. [ijk] B. [!ijk]
C. ?
D. *

A. kill 1
B. kill 0
C. cancel all
D. cancel 1

A. dm
B. rm
C. delete
D. erase

A. grep
B. mail
C. mesg
D. write

A. rpcinfo
B. serverinfo
C. NFSinfo
D. infserv