Maintenance Ruby 3.3 gets fixes, but no new features. Switch to Ruby 4.0 →
class method
Process::Sys.setruid
Process::Sys.setruid(user) → nil
process.c
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static VALUE
p_sys_setruid(VALUE obj, VALUE id)
{
check_uid_switch();
if (setruid(OBJ2UID(id)) != 0) rb_sys_fail(0);
return Qnil;
}
Set the real user ID of the calling process to user. Not available on all platforms.