On Mon, 14 Oct 2013, Gregory P. Ennis wrote: > I have never used setuid, but it appears that this will only allow a > piece of software to be set to root. I really do not want to give that > kind of privilege to this piece of software. IIRC suid sets the effective user to the owner of the file. If ceres runs a setuid program owned by series, the effective user will become series. There is also a system call to make effective owner the actual owner. suid root programs often use it after they have glommed onto all the necessary resources only availale to root. -- Michael hennebry at web.cs.ndsu.NoDak.edu "On Monday, I'm gonna have to tell my kindergarten class, whom I teach not to run with scissors, that my fiance ran me through with a broadsword." -- Lily