diff --git a/man5/utmp.5 b/man5/utmp.5 index 09507b4d9..86fa08d94 100644 --- a/man5/utmp.5 +++ b/man5/utmp.5 @@ -253,7 +253,8 @@ Clearing \fIut_id\fP may result in race conditions leading to corrupted utmp entries and potential security holes. Clearing the above mentioned fields by filling them -with null bytes is not required by System V semantics, but it allows to run +with null bytes is not required by System V semantics, +but makes it possible to run many programs which assume BSD semantics and which do not modify utmp. Linux uses the BSD conventions for line contents, as documented above. .PP