ChangeOwner changes the owner of filepath to the given user.

CreateUser will create a new user, with the given homeFolder, set the user owner of the homeFolder, and assign the user membership of given groups.

CurrentUser will get a User record representing the current user.

FindGroup will find the user-group given by name.

FindUser will get a User record representing the user with given username.

KillByOwner will kill all process with the given owner.

KillProcessTree will kill root and all of its descendents.

StartProcess starts a new process with given arguments, environment variables, and current working folder, running as given user.

ErrUserGroupNotFound indicates that a given user-group doesn't exist.

Group is a representation of a system user-group.

Process is a representation of a system process.

ProcessOptions are the arguments given for StartProcess.

User is a representation of a system user account.