.TH SETUID 2 .SH NAMEsetuid, setgid \- set user and group ID.SH SYNOPSIS.B setuid(uid).PP.B setgid(gid).SH DESCRIPTIONThe user ID (group ID) of the current process is set tothe argument.Both the effective and the real ID are set.These calls are only permitted to the super-useror if the argument is the real ID..SH "SEE ALSO"getuid(2).SH DIAGNOSTICSZero is returned if the user (group) ID is set;\-1 is returned otherwise..SH ASSEMBLER(setuid = 23.).br(user ID in r0).br.B sys setuid.PP(setgid = 46.).br(group ID in r0).br.B sys  setgid