Parsing of URLs using bash sh scripting

URL Parsing

#!/bin/bash
# Referenced and tweaked from http://stackoverflow.com/questions/6174220/parse-url-in-shell-script#6174447

proto="$(echo $1 | grep :// | sed -e's,^\(.*://\).*,\1,g')"
# remove the protocol
url="$(echo ${1/$proto/})"
# extract the user (if any)
userpass="$(echo $url | grep @ | cut -d@ -f1)"
pass="$(echo $userpass | grep : | cut -d: -f2)"
if [ -n "$pass" ]; then
  user="$(echo $userpass | grep : | cut -d: -f1)"
else
    user=$userpass
fi

# extract the host
host="$(echo ${url/$user@/} | cut -d/ -f1)"
# by request - try to extract the port
port="$(echo $host | sed -e 's,^.*:,:,g' -e 's,.*:\([0-9]*\).*,\1,g' -e 's,[^0-9],,g')"
# extract the path (if any)
path="$(echo $url | grep / | cut -d/ -f2-)"

echo "url: $url"
echo "  proto: $proto"
echo "  user: $user"
echo "  pass: $pass"
echo "  host: $host"
echo "  port: $port"
echo "  path: $path"

For the sake of reference: https://stackoverflow.com/questions/6174220/parse-url-in-shell-script