Current returns the current user This is a wrapper for (os/user).Current.

Lookup looks up a user by username This is a wrapper for (os/user).Lookup.

Lookup looks up a group by group name This is a wrapper for (os/user).LookupGroup.

Lookup looks up a user by uid This is a wrapper for (os/user).LookupId.

OverrideGetentSearchPath allows overriding getent search path.