10-09-2001
Has your system ever been attached to the internet
prior to that first shutdown you mention?
Was ftp or telent active?
What I'm driving at here is that you may have been cracked
since you mention you get the powerdown message when you
try to login with the other users. You also mention that
these logins had worked previously. You may also want
to check what your system is doing with ps and who as well as
taking a look in /var/log/messages and /var/log/secure for any
abnormalities (i.e. large block of garbage).
If none of this is true, I don't know what else may be the
cause. You seem to have added new users properly...
useradd then passwd
...however, my recommendation would be the same...
save all your important data and configuration files then
wipe the disk clean and reinstall Linux. Before you connect
to the internet, be sure to secure (if not turn off) ftp and telnet.
10 More Discussions You Might Find Interesting
1. AIX
Currently, I have about 7 servers and the uid for a given person is different on each server. I want to make the uid's the same for a given username on each server. I know how to change the uid via smit, but when I do the previous uid number shows up as the owner for the files of that username.... (4 Replies)
Discussion started by: mcateriny
4 Replies
2. UNIX for Dummies Questions & Answers
Is it possible given a uid to determine information about the person with the uid? An example would be simple information regarding what group and the name of the person associated with that uid. It seems there is probably an easy staring me in the face but i cant seem to find it... (3 Replies)
Discussion started by: dreaming1
3 Replies
3. AIX
Hello
I want to find out how I can make sure in AIX that the UIDs cannot be reused Until after 6 Months after the user has left.
Thanks,
Noori (4 Replies)
Discussion started by: noori
4 Replies
4. Shell Programming and Scripting
How do i go about getting the uid of the user and verify ?
if
then
echo "You are not a superuser, please login as a superuser"
exit1;
fi
the above code doesn't work. can some guru please help me.
1. how to get the uid of the user ? i know by typing id but how to... (7 Replies)
Discussion started by: filthymonk
7 Replies
5. Shell Programming and Scripting
i need a script to process a password file and based on the UIDs in the password file, generate the new UID that is 1 greater than the highest uid.
i have some script logic but i dont really understand it. any help?
#!/usr/bin/perl
##########################################
#... (3 Replies)
Discussion started by: livewire06
3 Replies
6. Shell Programming and Scripting
is tty command opens a process in the system if yes then why process got the userid????? (5 Replies)
Discussion started by: Mac91
5 Replies
7. UNIX for Dummies Questions & Answers
Hi folks!
I need you help to discover what's the impact of a duplicated UID in an operating system. What's the meaning when someone put in different users the same UID? (3 Replies)
Discussion started by: phcostabh
3 Replies
8. AIX
Hi,
Can any one please tell what are the risks of having more than one users having UID 0 (root)?
Thanks
Naveed (9 Replies)
Discussion started by: naveedaix
9 Replies
9. Solaris
Hi,
I want to change user id gefadm ,uid=0(root) gid=0(root) to uid=16649(isaadmin) gid=16284(dstage),
how can i change this uid ,gid one value to another value.
Please provide the steps how can i change , uid=0(root) gid=0(root) to uid=16649(isaadmin) gid=16284(dstage).
Thanks in advance for... (2 Replies)
Discussion started by: sridhardwh
2 Replies
10. Solaris
Hi All,
I have to give permission to one of the groups called as "ABC" as like the permissions of the group "UNIXADM".
Could you please some one help on this issue ? (3 Replies)
Discussion started by: ramareddi16
3 Replies
LEARN ABOUT OPENDARWIN
ac
AC(8) BSD System Manager's Manual AC(8)
NAME
ac -- display connect time accounting
SYNOPSIS
ac [-d] [-p] [-w file] [users ...]
DESCRIPTION
If the file /var/log/wtmp exists, a record of individual login and logout times are written to it by init(8) and login(8) respectively. The
program ac examines these records and writes the accumulated connect time for all logins to the standard output.
Options available:
-d Display the connect times in 24 hour chunks.
-p Display individual user totals.
-w file
Read raw connect time data from file instead of the default file /var/log/wtmp.
users ...
Display totals for the given individuals only.
If no arguments are given, ac displays the total amount of login time for all active accounts on the system.
The default wtmp file is an infinitely increasing file unless frequently truncated. This is normally done by the daily daemon scripts sched-
uled by cron(8) which rename and rotate the wtmp files before truncating them (and keeping about a weeks worth on hand). No login times are
collected however, if the file does not exist.
FILES
/var/log/wtmp
/var/log/wtmp.[0-7] rotated files
SEE ALSO
init(8), sa(8), login(1), utmp(5).
HISTORY
A ac command appeared in Version 6 AT&T UNIX.
4th Berkeley Distribution April 19, 1994 4th Berkeley Distribution