Shell Programming and Scripting

#!/bin/bash
##
##Script to load FILES


if [ $# -lt 3 -a $# -gt 4 ] ; then
echo "please enter the command properly"
echo " "
echo "Usage: <Script_name><server><user_name><password>[<version>]"
echo "example: sh pradeep.sh server1 root root123 10.2.1.5"
echo "try again"
exit -1

elif [ $# -eq 3 ] ; then
hostname=$1
username=$2
password=$3

ftp -n -i $hostname <<END_SCRIPT
quote USER $username
quote PASS $password
bin
cd /root/pradeep/myfiles/default
mget *.rpm
END_SCRIPT
elif [ $# -eq 4 ] ; then
hostname=$1
username=$2
password=$3


ftp -n -i $hostname <<END_SCRIPT
quote USER $username
quote PASS $password
bin

cd /root/pradeep/myfiles
ls -l | grep "$4" > /temp/available.$$

temps =`cat /temp/available.$$`

if [ " $temps " == "" ] ; then
cd /root/pradeep/myfiles/$4
mget *.rpm
else
echo "Sorry the required file doesnt exit's"
fi
END_SCRIPT

fi