Messenger

message.sh

#!/bin/bash

logged_on=$(who | grep -i -m 1 $1 | awk '{print $1}')

if [ -z $logged_on ]
then
echo "$1 is not logged on."
echo "Exit"
exit
fi
allowed=$(who -T | grep -i -m 1 $1 | awk '{print $2}')
if [ $allowed != "+" ]
then
echo "$1 does not allowing messaging."
echo "Exit"
exit
fi
if [ -z $2 ]
then
echo "No message parameter included."
echo "Exit"
exit
fi

# $ ./message.sh user this is long test message with using sh