Sponsored Content
Full Discussion: No concurrent login
Top Forums UNIX for Advanced & Expert Users No concurrent login Post 33919 by RTM on Friday 24th of January 2003 09:33:31 AM
Old 01-24-2003
No matter what you do, you are going to have folks who do not logout correctly and may leave a session out there.

If you use something like introcomp.co.uk - restrict login you would also have to have something to kill off users who are idle for a certain amount of time. Setting up each .profile would also be a hassle (especially if with the linked script ) if you wanted to change how many logins were allowed. Setting up a link from all home directories to a common .profile might be a way around that ( it matters if your home directories are NFS mounts or not).

Found that this works just as well in /etc/profile - of course, you might want to change the logic and allow root and other special accounts to get around the limit set.

Also note that the script does not stop Control-C break outs which could allow folks to have more than one session. A cron script to look for specific user and more than one terminal association could kill off second process (again, more work to figure out which is which).

Without 3rd party software which would make this easier, your options are limited and a headache you might not want to do.

Last edited by RTM; 01-24-2003 at 11:07 AM..
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Definition of Concurrent Users

Can someone guide me in telling me what is a good definition of concurrent users. Is there a website I can go to to get this definition? (2 Replies)
Discussion started by: mpshaw
2 Replies

2. Filesystems, Disks and Memory

concurrent file access

Hi I am fairly new to the Unix environment and need to understand how Unix handles concurrent access to files and how it differs to Win NT. Any help would be greatly appriciated :) (1 Reply)
Discussion started by: beechwood
1 Replies

3. Shell Programming and Scripting

threads - concurrent processing

i have a program which uses a java thread that concurrently copies table data with many DB connections (one for each thread) new to unix, wanted to know if its possible to do a similar thing in a shell script. for eg script.sh trigger 2 stored procs at the same time which are... (6 Replies)
Discussion started by: siva_jm
6 Replies

4. Shell Programming and Scripting

Concurrent writing to file

Hi I have a ksh that can have multiple instances running at the same time. The script (each instance) uses the SAME log file to write to. Should this cause a problem or is the ksh clever enough to queue write requests to the file? Thanks. GMMIKE (2 Replies)
Discussion started by: GNMIKE
2 Replies

5. Shell Programming and Scripting

concurrent processes

We have a very large text file..contains almost 100K lines. We want to process this file to generate another text file as per our data requirement. As for now the parsing of data takes 20-25 mins each , for 100K lines. the current script uses : While Read Each Line do parsing.. Done ... (6 Replies)
Discussion started by: Amruta Pitkar
6 Replies

6. AIX

chvg -g on Concurrent VG

Hi, on normal (non concurrent) vgs, it's possible to extend a lun on san-storage , and use chvg -g to rewrite vgda, and use disks with the new size for lvm operations is the same procedure possbile on a hacmp-cluster (2 node in our case) with concurrent vgs in active/passive mode? cheers... (5 Replies)
Discussion started by: funksen
5 Replies

7. Linux

Is Concurrent I/O (CIO) available on Linux?

Hi Guys, I just wondering if any of the AIX gurus with some exposure to Linux Redhat can tell me whether in Linux ( Red Hat or OpenSuse ) we have a similar option/capability like the CIO (Concurrent I/O) which is currently available on AIX. The reason I'm asking is because in the past we... (2 Replies)
Discussion started by: arizah
2 Replies

8. Shell Programming and Scripting

Concurrent execution

Hi all, I have a folder with sql files that need to be inserted in a DB with SQL*Plus. The thing is that it takes too long to insert them all one by one, so I want to insert them five at a time. Currently what I use is this: for $FILENAME in *.sql do sqlplus -s $DBUSER@$SID << EOF ... (0 Replies)
Discussion started by: Tr0cken
0 Replies

9. Solaris

Increase concurrent logins?

Hi all, I've been tasked to create a robot account across a bunch of SunOS servers, amongst the requirements for this account is this condition: Concurrent access requirement The robot account shall have the ability to create at least ten(10) concurrent access sessions. In order to... (0 Replies)
Discussion started by: dan-e
0 Replies

10. AIX

Difference between concurrent and enhanced concurrent VG

Hi, What are the differences between concurrent and enhanced concurrent VGs.? Any advantages of enhanced concurrent VG over normal concurrent vg Regards, Siva (2 Replies)
Discussion started by: ksgnathan
2 Replies
NEWUSER(8)						      System Manager's Manual							NEWUSER(8)

NAME
newuser - adding a new user SYNOPSIS
rc /sys/lib/newuser DESCRIPTION
To establish a new user on Plan 9, add the user's name to /adm/users by running the newuser command on the console of the file server (see users(6) and fs(8)). Next, give the user a password using the changeuser command on the console of the authentication server (see auth(8)). At this point, the user can bootstrap a terminal using the new name and password. The terminal will only get as far as running rc, however, as no profile exists for the user. The rc(1) script /sys/lib/newuser sets up a sensible environment for a new user of Plan 9. Once the terminal is running rc, type rc /sys/lib/newuser to build the necessary directories in /usr/$user and create a reasonable initial profile in /usr/$user/lib/profile. The script then runs the profile which, as its last step, brings up 81/2(1). At this point the user's environment is established and running. (There is no need to reboot.) It may be prudent at this point to run passwd(1) to change the password, depending on how the initial password was cho- sen. The profile built by /sys/lib/newuser looks like this: bind -a $home/bin/rc /bin bind -a $home/bin/$cputype /bin font = /lib/font/bit/pelm/euro.9.font switch($service){ case terminal prompt=('term% ' ' ') fn term%{ $* } exec 81/2 case cpu bind -b /mnt/term/mnt/81/2 /dev prompt=('cpu% ' ' ') echo -n $sysname > /dev/label fn cpu%{ $* } news case con prompt=('cpu% ' ' ') news } Sites may make changes to /sys/lib/newuser that reflect the properties of the local environment. Use the -c option of mail(1) to create a mailbox. SEE ALSO
passwd(1), 81/2(1), namespace(4), users(6), auth(8), fs(8) NEWUSER(8)
All times are GMT -4. The time now is 09:17 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy