SCO Unix ® FAQ section

Unix, Xenix and ODT General FAQ

This article is from a FAQ concerning SCO operating systems. While some of the information may be applicable to any OS, or any Unix or Linux OS, it may be specific to SCO Xenix, Open Desktop or Openserver.

There is lots of Linux, Mac OS X and general Unix info elsewhere on this site: Search this site is the best way to find anything.

How can I tell if a user logged in locally, used rlogin, telnet or ssh?

You can use the concept here to back trace any process. This script will find the first ancestor process after init. This would be sshd or telnet or just a getty, etc.

   MYPROC=$$
   NEXTPROC=$MYPROC
   while [ $NEXTPROC != 1 ]
   do
   MYPROC=$NEXTPROC
   NEXTPROC=`ps -p $MYPROC -o "ppid=" `
   done
   ps -p $MYPROC -o args=
 

Fabio Gianotti observed:

Not to be picky, but on my system, the above script returns "/etc/inetd" if
you've used either telnet or rlogin , so I changed it slightly:

   echo $0 `tty` `id`
   INETPROC=`cat /etc/inetd.pid`
   MYPROC=$$
   NEXTPROC=$MYPROC
   while [ $NEXTPROC != 1 -a $NEXTPROC != $INETPROC ]
   do
   MYPROC=$NEXTPROC
   NEXTPROC=`ps -p $MYPROC -o "ppid=" `
   done
   ps -p $MYPROC -o args=

Comments?

Jump to Comments

Many of the products and books I review are things I purchased for my own use. Some were given to me specifically for the purpose of reviewing them. I resell or can earn commissions from the sale of some of these items. Links within these pages may be affiliate links that pay me for referring you to them. That's mostly insignificant amounts of money; whenever it is not I have made my relationship plain. I also may own stock in companies mentioned here. If you have any question, please do feel free to contact me.

Specific links that take you to pages that allow you to purchase the item I reviewed are very likely to pay me a commission. Many of the books I review were given to me by the publishers specifically for the purpose of writing a review. These gifts and referral fees do not affect my opinions; I often give bad reviews anyway.

We use Google third-party advertising companies to serve ads when you visit our website. These companies may use information (not including your name, address, email address, or telephone number) about your visits to this and other websites in order to provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by these companies, click here.