Basic of linux unix

A. which
B. who
C. who am i
D. 1 /u

A. copy programs/wb misc/wb
B. cp programs/wb misc
C. tar programs/wb misc/wb
D. copy a:programs/wb b:misc/wb

A. cd
B. cd ..
C. cd/
D. chdir

A. s
B. S
C. a
D. i

A. cat
B. grep
C. wc
D. None of the above

A. dir
B. prompt $p$g
C. pwd
D. path

A. to move the cursor to a matching delimiter, when a delimiters a parenthesis, a bracket, or a brace.
B. to move the cursor to the upperleft corner of the screen
C. to move the cursor backward to the beginning of a word
D. to move the cursor to the first column in the current line

A. -4
B. -f
C. -1
D. -2

A. $
B. #
C. :
D. ;

A. ls -l -d
B. ls -l
C. ls -x
D. ls -F