Want help in last command

Question

i wnat to know about all fields of last command and what is the meaning of down when we execute the
last command .
regards

Answer 1

cough I've said it before, and I'll say it again: man last
================
User Commands last(1)
NAME
last - display login and logout information about users and
terminals
SYNOPSIS
last [ -a ] [ -n number | -number ] [  -f filename  ] [
name | tty ] ...
DESCRIPTION
The last command looks in the /var/adm/wtmpx file, which
records all logins and logouts, for information about a
user, a terminal, or any group of users and terminals. Argu-
ments specify names of users or terminals of interest. If
multiple arguments are given, the information applicable to
any of the arguments is printed. For example, last root con-
sole lists all of root's sessions, as well as all sessions
on the console terminal. last displays the sessions of the
specified users and terminals, most recent first, indicating
the times at which the session began, the duration of the
session, and the terminal on which the session took place.
last also indicates whether the session is continuing or was
cut short by a reboot.
The pseudo-user reboot logs in when the system reboots.
Thus,
last reboot
will give an indication of mean time between reboots.
last with no arguments displays a record of all logins and
logouts, in reverse order.
If last is interrupted, it indicates how far the search has
progressed in /var/adm/wtmpx. If interrupted with a quit
signal (generated by a CTRL-\), last indicates how far the
search has progressed, and then continues the search.
OPTIONS
The following options are supported:
-a Displays the hostname in the last column.
-f filename
Uses filename as the name of the accounting file
instead of /var/adm/wtmpx.
-n number|-number
Limits the number of entries displayed to that speci-
fied by number. These options are identical; the -
number option is provided as a transition tool only
SunOS 5.8 Last change: 17 Aug 1999 1
User Commands last(1)
and will be removed in future releases.
ENVIRONMENT VARIABLES
Date and time format is based on locale specified by the
LC_ALL, LC_TIME, or LANG environments, in that order of
priority.
FILES
/var/adm/wtmpx
accounting file
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWesu |
|_____________________________|_____________________________|
SEE ALSO
utmpx(4), attributes(5)
SunOS 5.8 Last change: 17 Aug 1999 2