On Mon, 03 Jun 2019 09:08:16 +0100 Ralph Corderoy <[email protected]> wrote: > Hi Ken, > > > > /var/mail/$USER Location of the system mail drop. > > > > But we don't actually use $USER (we call getpwuid(getuid()) and use > > that). > > And even then it's not that simple. > > > I personally interpreted the use of $USER as "the username goes here", > > not "we use the value of the $USER environment variable". But I admit > > that this is not clear. > > I'd interpret it as being able to do `USER=notme inc'. > > Should we simplify the code to demand $LOGNAME exists and use that? > POSIX, he say > > LOGNAME > The system shall initialize this variable at the time of login > to be the user's login name. See <pwd.h>. For a value of > LOGNAME to be portable across implementations of POSIX.1-2017, > the value should be composed of characters from the portable > filename character set.
You can use getlogin(3) or getlogin_r(3) as per ISO/IEC 9945-1:1996. -- nmh-workers https://lists.nongnu.org/mailman/listinfo/nmh-workers
