return 0 not null string when user has a ctty but no utmp entry
[unix-history] / usr / src / lib / libc / gen / valloc.3
1985-05-16 Kirk McKusick4.3BSD beta release manual page
1985-05-16 Kirk McKusickmanual page distributed with 4.2BSD
1985-05-16 Kirk McKusickmanual page distributed with 4.1BSD