Mar 31, 2008

Shell Scripting - Rotating Progress Bar

The echo -e command is used to change the term color


echo -e "\E[40;32m\b\c"
#Changes the term color to green with black background



#!/bin/bash

function success_banner()

{
echo -e "\E[40;32m\b\c"
echo -e "[OK]"
echo -e "\E[40;37m"

}

function progress_banner()
{
echo ""
echo "##############################################################"

echo ""
echo -e "Step: $1 \b\c"
}

function rotate_line(){

INTERVAL=1
timecount="0"
while :
do
timecount=`expr $timecount + 1`

case $timecount in
"1")
echo -e "-\b\c"

sleep $INTERVAL
;;
"2")
echo -e '\\'"\b\c"

sleep $INTERVAL
;;
"3")
echo -e "|\b\c"

sleep $INTERVAL
;;
"4")
echo -e "/\b\c"

sleep $INTERVAL
;;
*)
timecount="0" # Reset the count to 0

esac
done
}

function start_rotation(){
rotate_line &

}

function stop_rotation(){
rotate_line_pid=$!
kill -9 $rotate_line_pid

echo -e "\b\b\b"
}

progress_banner Rotation_Bar_Started
start_rotation
sleep 5
stop_rotation
success_banner Ok



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