#!/bin/sh

PLAN=${HOME}/data/.planlf

if [ ! -p $HOME/.plan ]; then
   echo .plan is not a pipe.  Do mkfifo .plan
   exit 0
fi
if [ ! -f $PLAN ]; then
   echo $PLAN does not exist.  Create it it first.  Ex : touch $PLAN
   exit 0
fi

finsub () {
   cat $PLAN      # channel file into pipe
   usr=`ps -elf | grep $USER | grep finger | grep -v "grep finger" | cut -c5-14`
   echo $usr >> $HOME/data/.planlog
   echo Hey, stop fingering me $usr, let me finger you instead:
   finger $usr
}

if [ -f $HOME/data/.planpid ]; then
      kill -9 `cat $HOME/data/.planpid` 2> /dev/null > /dev/null
fi
echo $$ > $HOME/data/.planpid

while [ true ]; do
   trap "" 13
   finsub > $HOME/.plan
done