vmplayer的小问题

vmplayer是免费的，当然就不需要去做那些找序列号之类的猥琐事了，不过在gentoo里emerge了vmplayer以后普通用户无法正常执行：
VMware Player Error:
VMware Player must be set-UID root, "/opt/vmware/player/lib/bin/vmware-vmx" is not. Are you running /opt/vmware/player/lib/bin/vmware-vmx from its distribution directory? That copy of the program is not set-UID root.
又google，找到答案：
#chmod 4755 /opt/vmware/player/lib/bin/vmware-vmx
再运行，没有报错了
这个4表示可以set-uid root