System.Posix.User
User environment
Querying the user environment
getRealUserID
getRealGroupID
getEffectiveUserID
getEffectiveGroupID
getGroups
getLoginName
getEffectiveUserName
The group database
data
GroupEntry
getGroupEntryForID
getGroupEntryForName
getAllGroupEntries
The user database
data
UserEntry
getUserEntryForID
getUserEntryForName
getAllUserEntries
Modifying the user environment
setUserID
setGroupID