A.解压文件后缀为.Z
B.解压文件后缀为.gz
C.压缩文件后缀为.Z
D.压缩文件后缀为.gz

A.mkpoint/work
B.mkmountpoint/work
C.touch/work
D.mkdir/work

A.kill-121
B.kill-stop21
C.kill-621
D.kill-921

A.cshrc
B.login
C.profile
D.init

A.groupadd–g 100staf
B.groupadd–g 100–sstaff
C.groupaddstaff–g id100
D.groupadd–g staff100

A.userdel–roracle
B.userdel–u1002
C.userdel–uidoracle
D.userdel–r1002

A.helpcp
B.cp/？
C.mancp
D.以上都不对

A.：q
B.：wq
C.：q!
D.q