Put the script login_control on this directory

login_control/login_control.sh

@@ -0,0 +1,53 @@
+#!/bin/sh 
+#
+# Version 0.1
+# AUTHOR AND MAINTAINER: Ataliba Teixeira < http://github.com/ataliba >
+#
+# NAME
+#   login_control
+#
+# DESCRIPTION 
+#   Limit the number of logins of a user on a Linux System 
+#
+# HOW TO USE ? 
+#
+# To install this script you need to create a file named login_control on you /etc directory
+# After this, copy this script to the /usr/local/bin directory and set the exec permissions on this. 
+# # touch /etc/login_control
+# # cp login_contro.sh /usr/local/bin/login_control
+# # chmod 755 /usr/local/bin/login_control
+# 
+# The default of this script is logout all the users try to connect more than one time on you Linux. 
+# But, if you need to permit more than one connect of a specific user, on the /etc/login_control file 
+# you need to put ( one per line ) the login and the number of connections of this user: 
+# Sintax: user:number of connections
+# Example: ataliba:2
+# 
+# If you have problems, open a bug request on GitHub
+#
+# CHANGELOG ( MM/DD/YYYY)
+#
+#  ataliba 	04/16/2012		- First public version 
+#
+
+Me=`whoami`
+Number=`who | grep $Me | wc -l`
+
+# Processing user exceptions 
+
+LoginControl=`grep $Me /etc/login-control | awk -F":" '{print $2}'`
+
+# Logout or login 
+
+if [ -z $LoginControl ]; then 
+  if [ $Number -gt 1 ]; then 
+     exit
+  fi
+ else
+    if [ $Number -gt $LoginControl ]; then 
+      echo "You account has $Number connections at this time. Your limit is $LoginControl connections."
+      sleep 3 
+      exit
+    fi
+fi
+