01-10-2011
The system becomes non responsive nor from the console or any terminal or a telnet session. and when we reboot, it doesnt ask to save the dump file. and the only way is to do a hard reboot.
Thanks for looking at the problem.
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last(1) General Commands Manual last(1)
Name
last - indicate last logins of users and teletypes
Syntax
last [-N] [name...] [tty...]
Description
The command looks back in the file, which records all logins and logouts, for information about a user, a teletype or any group of users
and teletypes. Arguments specify names of users or teletypes of interest. Names of teletypes can be given fully or abbreviated. For
example `last 0' is the same as `last tty0'.
If multiple arguments are given, the information that applies to any of the arguments is printed. For example, `last root console' lists
all of "root's" sessions as well as all sessions on the console terminal.
The command prints the sessions of the specified users and teletypes, most recent first, indicating the times at which the session began,
the duration of the session, and the teletype on which the session took place. If the session is ongoing or was cut short by a reboot,
indicates that this is so.
The pseudo-user reboot logs in at reboots of the system. Therefore, the following example gives an indication of mean time between reboot:
last reboot
The command with no arguments prints a record of all logins and logouts, in reverse order.
If is interrupted, it indicates how far the search has progressed in If interrupted with a quit signal (generated by a <CTRL/E>) indicates
how far the search has progressed so far, and the search continues.
Options
-N Limits the number of output lines to the specified number.
Files
/usr/adm/wtmp
login data base
/usr/adm/shutdownlog
records that shutdowns occurred and why
See Also
wtmp(5), ac(8), lastcomm(1)
last(1)