11-08-2016
I'm confused. What problem are you trying to solve?
For example from the cygwin forums:
Quote:
Sshd (the daemon) logs by default on the Windows Event Application list, this
can be changed in the configuration (/etc/sshd_config) so that it can log using
syslog (a separate package not installed by default).
It also logs to wtmp, you can see who loged in and from where but entries are
not distinguishable from telnet/ftp/or any other logins.
One example of failed login in the event log (very common when somebody tries to
"break" into your computer) is (6 events):
The description for Event ID ( 0 ) in Source ( sshd ) cannot be found. The local
computer may not have the necessary registry information or message DLL files to
display messages from a remote computer. You may be able to use the /AUXSOURCE=
flag to retrieve this description; see Help and Support for details. The
following information is part of the event: sshd : PID 2868 : Invalid user lidia
from 61.129.117.112.
If so, search the cygwin.com site for your problem. I am not an expert on cygwin authentication and logging. It is somewhat unlike other unixes.
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LAST,LASTB(1) Linux System Administrator's Manual LAST,LASTB(1)
NAME
last, lastb - show listing of last logged in users
SYNOPSIS
last [-R] [-num] [ -n num ] [-adFiowx] [ -f file ] [ -t YYYYMMDDHHMMSS ] [name...] [tty...]
lastb [-R] [-num] [ -n num ] [ -f file ] [-adFiowx] [name...] [tty...]
DESCRIPTION
Last searches back through the file /var/log/wtmp (or the file designated by the -f flag) and displays a list of all users logged in (and
out) since that file was created. Names of users and tty's can be given, in which case last will show only those entries matching the
arguments. Names of ttys can be abbreviated, thus last 0 is the same as last tty0.
When last catches a SIGINT signal (generated by the interrupt key, usually control-C) or a SIGQUIT signal (generated by the quit key, usu-
ally control-), last will show how far it has searched through the file; in the case of the SIGINT signal last will then terminate.
The pseudo user reboot logs in each time the system is rebooted. Thus last reboot will show a log of all reboots since the log file was
created.
Lastb is the same as last, except that by default it shows a log of the file /var/log/btmp, which contains all the bad login attempts.
OPTIONS
-f file
Tells last to use a specific file instead of /var/log/wtmp.
-num This is a count telling last how many lines to show.
-n num The same.
-t YYYYMMDDHHMMSS
Display the state of logins as of the specified time. This is useful, e.g., to determine easily who was logged in at a particular
time -- specify that time with -t and look for "still logged in".
-R Suppresses the display of the hostname field.
-a Display the hostname in the last column. Useful in combination with the next flag.
-d For non-local logins, Linux stores not only the host name of the remote host but its IP number as well. This option translates the
IP number back into a hostname.
-F Print full login and logout times and dates.
-i This option is like -d in that it displays the IP number of the remote host, but it displays the IP number in numbers-and-dots nota-
tion.
-o Read an old-type wtmp file (written by linux-libc5 applications).
-w Display full user and domain names in the output.
-x Display the system shutdown entries and run level changes.
NOTES
The files wtmp and btmp might not be found. The system only logs information in these files if they are present. This is a local configura-
tion issue. If you want the files to be used, they can be created with a simple touch(1) command (for example, touch /var/log/wtmp).
FILES
/var/log/wtmp
/var/log/btmp
AUTHOR
Miquel van Smoorenburg, miquels@cistron.nl
SEE ALSO
shutdown(8), login(1), init(8)
Jul 31, 2004 LAST,LASTB(1)