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I need to figure out a way that on my linux box if there is a user with one terminal connection how not to let him open another one.. i believe that I can do this with a bash script but just can’t seem to do it right anyone have a script that they are using to do this.. Basically this will use who and once it does that make sure that they are logged on only once

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bash shell

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The best way to do it is to deny muktiple logins for that user. You must do it editing
/etc/security/limits.conf and putting a line like this.

username maxlogins 1

bash shell

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