单项选择题
A.cp B.mv C.cat D.pwd
A.head B.tail C.cat D.more
A.chown hlr:staff Sroute B.chusr hlr:staff Sroute C.chown hlr staff Sroute D.chusr hlr staff Sroute
A.用户为sa,口令为Pserver1234 B.用户为sa,口令为server1234 C.用户为Usa,口令为Pserver1234 D.用户为Usa,口令为server1234
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