linux添加用户修改组

linux添加用户修改组
http://www.cnblogs.com/xd502djj/archive/2011/11/23/2260094.html

groupadd hadoop
1026  groups
1027  groups hadoop
1028  groups hdfs
1029  useradd hdfsclient
1030  groups hdfsclient
1031  ls
1034  usermod -G hdfs hdfsclient
1035  usermod -G hadoop hdfsclient
1036  groups hdfsclient
1037  passwd hdfsclient