To create a user wcg id 2001
sudo dscl . -create /Users/wcg UniqueID 2001
View sudo dscl. -List / Users UniqueID
删除 sudo dscl . -delete /Users/wcg
Create a group wcg
sudo dscl . -create /Groups/wcg PrimaryGroupID 2001
查看 sudo dscl . -list /Groups PrimaryGroupID
删除 sudo dscl . -delete /Groups/wcg
The user added to the group wcg wcg
sudo dscl . -append /Groups/wcg GroupMembership wcg
移除: sudo dscl . -delete /Groups/wcg GroupMembership wcg
View all user groups have lower
dscl . -list /groups GroupMembership
Change owner
sudo chown -R wcg:wcg /Users/erin/PhpProjects/yijinsuo-mount/yjstob