[root@localhost ~]# id 51cto
id: 51cto: No such user
[root@localhost ~]# echo "51cto::555:555::/home/51cto:/bin/bash" >> /etc/passwd
[root@localhost ~]# id 51cto
uid=555(51tco) ...
查看当前系统版本[root@dcmail2 ~]# lsb_release -aLSB Version::core-3.0-ia32:core-3.0-noarch:graphics-3.0-ia32:graphics-3.0-noarchDistributor ID:RedHatEnterpriseASDescription:Red Hat Enterprise Linux AS...
