Wtmp not updating

This means that if you use ssh to run an application remotely, then that application will not show up in a "who" report.

Note: you must be sure that a terminal session is not started (as in ssh -t) because that canl cause the utmp/wtmp files to be updated. sshd directly calls logwtmp which creates the record in /var/log/[wu]tmp.

They must be created manually and are maintained by newsyslog(8).

#define _PATH_UTMP "/var/run/utmp" #define _PATH_WTMP "/var/log/wtmp" #define _PATH_LASTLOG "/var/log/lastlog" #define UT_NAMESIZE 32 #define UT_LINESIZE 8 #define UT_HOSTSIZE 256 struct lastlog ; struct utmp ; Each time a user logs in, the login(1) program looks up the user's UID in the lastlog file.

These records are supposed to be recorded for ALL session creation.

For programs that login, but do not use terminal interactions (such as scp, rcp, daemons, cron jobs...) there are no entries created.String fields are terminated by '[[

For programs that login, but do not use terminal interactions (such as scp, rcp, daemons, cron jobs...) there are no entries created.

String fields are terminated by '\0' if they are shorter than the size of the field.

The first entries ever created result from (8) cleans up utmp by setting ut_type to DEAD_PROCESS, clearingut_user, ut_host, and ut_time with null bytes for each record which ut_type is not DEAD_PROCESS or RUN_LVL and where no process with PID ut_pid exists.

file declares the structures used to record information about current users in the utmp file, logins and logouts in the wtmp file, and last logins in the lastlog file.

The timestamps of date changes, shutdowns, and reboots are also logged in the wtmp file.

||

For programs that login, but do not use terminal interactions (such as scp, rcp, daemons, cron jobs...) there are no entries created.String fields are terminated by '\0' if they are shorter than the size of the field.The first entries ever created result from (8) cleans up utmp by setting ut_type to DEAD_PROCESS, clearingut_user, ut_host, and ut_time with null bytes for each record which ut_type is not DEAD_PROCESS or RUN_LVL and where no process with PID ut_pid exists.file declares the structures used to record information about current users in the utmp file, logins and logouts in the wtmp file, and last logins in the lastlog file.The timestamps of date changes, shutdowns, and reboots are also logged in the wtmp file.

]]' if they are shorter than the size of the field.The first entries ever created result from (8) cleans up utmp by setting ut_type to DEAD_PROCESS, clearingut_user, ut_host, and ut_time with null bytes for each record which ut_type is not DEAD_PROCESS or RUN_LVL and where no process with PID ut_pid exists.file declares the structures used to record information about current users in the utmp file, logins and logouts in the wtmp file, and last logins in the lastlog file.The timestamps of date changes, shutdowns, and reboots are also logged in the wtmp file.