copy files with extention

copy files with extention

#!/bin/bash
SRC=$1
DEST=$2
EXT=$3

if [ -d $1 -a -d $2 ];then
   for file in `ls *.$EXT `;do
     name=$(echo $file | cut -d "." -f1)
     if [ -d $DEST/$name ];then
       cp $SRC/$file $DEST/$name/$file
     else
       mkdir $DEST/$name
       cp $SRC/$file  $DEST/$name/$file
     fi
   done
else
   echo Enter the valid directory path
fi


### USAGE

script.sh  <src path> <dest path> <extension>
Eg:
$./script.sh /tmp /opt txt