paste a sig into a sig file

gistfile1

#!/bin/bash
#*******************************************************#
#                                                       #
#                                                       #
# Arunachalesha                                         #
# $Id$  #
#*******************************************************#
file="$HOME/myblogs/totalrecall/techurls.txt"
sig=`pbpaste`
if [ "$sig" == "" ] 
then
    echo "Got nothing! Maybe pbpaste not working. Please paste manually:"
    read sig
fi
str="$sig"
count=`echo "$sig" | grep -c "^http:"`
if [ $count -eq 1 ] 
then
    echo "Enter an html title:"
    read title
    if [ "$title" != "" ] 
    then
        str="<a href=\"$sig\">$title</a>"
    fi
else
    count=`echo "$sig" | grep -c "http:"`
    if [ $count -eq 0 ] 
    then
        echo "No URL found. Would you like to add a URL (blank to ignore)?"
        read url
        if [ "$url" != "" ] 
        then
            str="<a href=\"$url\">$str</a>"
        fi
    fi
fi
echo "Got: $str"
echo "Add a remark? (Blank to ignore): "
read remark
if [ "$remark" != "" ] 
then
    str="$remark : $str"
fi
echo "$str" >> $file
echo "Added [ $str ] to $file"
echo "----------------------"
tail $file