A、/etc/passwd
B、/etc/shadow
C、/etc/group
D、/etc/securetty

A、/etc/profile
B、/etc/login.defs
C、/etc/.login
D、/etc/.logout

A、ta rxvzf myftp.tgz–C/tmp
B、tar xvzf myftp.tgz–R/tmp
C、a rvzf myftp.tgz–X/tmp
D、tar xvzf myftp.tgz/tmp

A、finD.–name“？.c”–print
B、finD.–name“#.c”–print
C、finD.–name“!*.c”–print
D、finD.–name“*.c”–print

A、x
B、start
C、runx
D、startx

A、DISPLAY
B、TERM
C、ECHO
D、OUTPUT

A、foo
B、foo$temp
C、foo’this is a temped variable’
D、foothis is a temped variable

A、last
B、vi/var/log/wtmp
C、who
D、tail/var/log/wmtp

A、atq
B、atrm
C、rm
D、del

A、$#
B、$@
C、0
D、$!

A、telnet-locahost-25
B、telnet-localhost-53
C、telnet-localhost-110
D、telnet-localhost-80