z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

who
Files
Localization
Exit Values
Portability
–d Displays entries produced after the death of a process spawned from
/usr/sbin/init.
–H Displays column headings above the output.
–i Displays idle time for users. The idle time is the hours:minutes since the
last activity; a dot (.) means that the terminal has been used in the last
minute, and the string old means that the terminal has not been used in
more than 24 hours, or hasn’t been used since boot time.
–l Displays logged-out user entries.
–m Displays information about current terminal only.
–p Displays entries for processes spawned from /usr/sbin/init.
–q Displays a quick list with the number of users and their names; other
options are ignored.
–r Displays all run-level change entries.
–s Displays only the three fields user name, terminal, and time of entry.
–T Displays the state of each terminal as a plus sign (+) if the terminal allows
write access to other users, and a minus sign (–) if write access is denied.
who displays a question mark (?) if the write access cannot be determined.
–t Displays all time change entries (both old and new time).
–u Displays only entries associated with logged-in users. who enables this
option when you do not provide any options on the command line.
–w Displays the terminal state; this indicates whether the terminal can be
written to.
who uses the following files:
/etc/utmpx
Current status file.
who uses the following localization environment variables:
v LANG
v LC_ALL
v LC_CTYPE
v LC_MESSAGES
v LC_TIME
v NLSPATH
See Appendix F for more information.
0 Successful completion
2 Failure because of an incorrect command-line option, or because of too
many command-line arguments.
POSIX.2 User Portability Extension, X/Open Portability Guide.
792 z/OS V1R9.0 UNIX System Services Command Reference