Dynamic Motd

dynmotd.sh

#!/bin/bash
clear
one()
{
 FILETEXT=`cat $FILE | tail -c +5`
 echo $FILETEXT
 rm -f $FILE
}
two()
{
 FILETEXT=`cat $FILE | tail -c +5`
 echo $FILETEXT
 rm -f $FILE
 echo "one_$FILETEXT" >> $FILE
}
three()
{
 FILETEXT=`cat $FILE | tail -c +7`
 echo $FILETEXT
 rm -f $FILE
 echo "two_$FILETEXT" >> $FILE
}
normal()
{
 tput sgr0
}
green()
{
 tput sgr0
 tput setaf 2
}
cyan()
{
 tput sgr0
 tput setaf 6
}
red()
{
 tput setaf 1
}
IAM=`logname`
FILE="/usr/notes/$IAM"
ME=`who | grep ^"$IAM"`
NAME=`getent passwd $IAM | cut -d ':' -f 5 | cut -d ',' -f 1 | cut  -d ' ' -f 1`
MYTERM=`tty | cut -d "/" -f 3-`
WIDTH=`stty size | cut -d " " -f 2`
others()
{
 who | grep -v ^"$IAM"
}
cyan
if [ $WIDTH -gt 65 ]; then
 echo -e "  _____ _                _  __          __
 / ____| |              | | \ \        / /
| |    | |__  _   _  ___| | _\ \  /\  / /_ _  __ _  ___  _ __  
| |    | '_ \| | | |/ __| |/ /\ \/  \/ / _\` |/ _\` |/ _ \| '_ \ 
| |____| | | | |_| | (__|   <  \  /\  / (_| | (_| | (_) | | | |
 \_____|_| |_|\__,_|\___|_|\_\  \/  \/ \__,_|\__, |\___/|_| |_|
                                              __/ |            
                                             |___/             
  _____                            _   _             
 / ____|                          | | (_)            
| |     ___  _ __ ___  _ __  _   _| |_ _ _ __   __ _ 
| |    / _ \| '_ \` _ \| '_ \| | | | __| | '_ \ / _\` |
| |___| (_) | | | | | | |_) | |_| | |_| | | | | (_| |
 \_____\___/|_| |_| |_| .__/ \__,_|\__|_|_| |_|\__, |
                      | |                       __/ |
                      |_|                      |___/\n"
else
 echo -e "ChuckWagon\nComputing\n"
fi
normal
red
for i in $(seq `echo "$WIDTH - 1" | bc`); do
 echo -n "#"
done
echo -e "#\n"
normal
TIME=`uptime | sed 's/^.*up//' | awk -F, '{ if ( $3 ~ /user/ ) { print $1 $2 } else { print $1 }}' | sed -e 's/:/\ hours\ /' -e 's/ min//' -e 's/$/\ minutes/' | sed 's/^ *//'`
echo -n "This server has been running for "
green
echo -e "$TIME\n"
normal
if [ `echo -n "$ME" | wc -l` -ge 1 ]; then
 green
 echo -n "You"
 normal
 echo -n " are logged in on "
 if [ `echo -n "$ME" | wc -l` -eq 1 ]; then
  green
  echo -n "one"
  normal
  echo " other terminal:"
 elif [ `echo -n "$ME" | wc -l` -ge 2 ]; then
  green
  echo -n "$ME" | wc -l | tr -d [:blank:] | tr -d "\n"
  normal
  echo " other terminals:"
 else
  echo "Fatal error 1"
  normal
  exit 1
 fi
 normal
 green
 echo "$ME" | grep -v $MYTERM | tr -s '[:blank:]' '?' | cut -d "?" -f 2 | tr '\n' '	'
 echo
 normal
else
 echo "This is your first login."
fi
echo -n "Your current terminal is"
green
echo " $MYTERM."
normal
if [ `others | wc -l` -ge 1 ]; then
 listothers()
 {
  others | cut -d " " -f 1 | awk '{for (i=1;i<=NF;i++) a[tolower($i)]++}END{for (i in a) print i" "a[i]}' | sort -nrk2
 }
 for i in $(seq `listothers | wc -l`); do
  echo
  green
  WHOZIT=`listothers | head -n $i | tail -n 1 | cut -d " " -f 1 | tr -d '\n'`
  echo -n $WHOZIT
  normal
  NUM=`listothers | head -n $i | tail -n 1 | cut -d " " -f 2 | tr -d '\n'`
  echo -n " is logged in on "
  if [ $NUM -eq 1 ]; then
   green
   echo -n "one"
   normal
   echo " terminal:"
   green
   others | grep $WHOZIT | tr -s '[:blank:]' '?' | cut -d "?" -f 2 | tr '\n' '	'
   normal
  elif [ $NUM -ge 2 ]; then
   green
   echo -n "$NUM"
   normal
   echo " terminals:"
   green
   others | grep $WHOZIT | tr -s '[:blank:]' '?' | cut -d "?" -f 2 | tr '\n' '     '
   normal
  else
   echo "Fatal error 2"
  fi
  echo
 done
else
 echo "No others are logged in."
fi
 echo
if [ -f $FILE ] && [ "$IAM" != "root" ]; then
 TIMES=`cat $FILE | cut -d _ -f 1`
 if type -t $TIMES >> /dev/null; then
  echo "Hello $NAME, a note has been left for you:"
  $TIMES
  echo
 else
  echo "Hello $NAME, a note has been left for you:"
  cat $FILE
  echo
 fi
fi
exit