how can i avvoid users to login with the same login name? 2

[demetrio]

i am running a sco 5.0.7 unix. some users login twice or more using the same login name. some others login using the
login name and passwords of the others although i have create an account of each user. is there anything i can do
to block this so only one account of eache login name can login to the system?
thank you

 

[KenCunningham]

See a similar request in Thread58-694599

 

[PHV]

You can use something like this:
[ `who | grep -c "^$LOGNAME "` -gt 1 ] && exit 0

This is that I use in the user's profile (login shell=ksh):
[ $(who | grep -c "^$LOGNAME[ ]") -gt 1 ] && {
who -H | awk 'NR==1 || $1=="'$LOGNAME'" {print}'
id; echo "$LOGNAME already connected"
jobs >/dev/null 2>&1 # no 'You have running jobs' error
exit 2
}

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ222-2244

 

[demetrio]

sorry for asking again but i dont have much expirience with unix. shall i write both on them

[ `who | grep -c "^$LOGNAME "` -gt 1 ] && exit 0

[ $(who | grep -c "^$LOGNAME[ ]") -gt 1 ] && {
who -H | awk 'NR==1 || $1=="'$LOGNAME'" {print}'
id; echo "$LOGNAME already connected"
jobs >/dev/null 2>&1 # no 'You have running jobs' error
exit 2



to the .profile on the directory that the users logon. all the users logon to a directory /u2/prog whrere thre is the .profile .what other changes do i have to do there?
thank you again

 

[theotyflos]

Hi demetrio,

No, you should write only ONE of PHV's answers (the second is an "extended" version of the first one). You can put it in /u2/prog/.profile or in /etc/profile (for ALL users).

Theophilos.

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There are only 10 kinds of people: Those who understand binary and those who don't.

 

[demetrio]

thank you both. you help me a lot. they both work. for your expiriance which is the right shell (sh or ksh )to logon the users.? there are 100 users logon to that directory , and they just runing a cobol program as soon as the logon.
they do nothing else?
thanks again.