urldecode/urlencode

$alias urldecode='python -c "import sys, urllib as ul;print ul.unquote_plus(sys.argv[1])"'

$alias urlencode='python -c "import sys, urllib as ul;print ul.quote_plus(sys.argv[1])"'

$urlencode '!@#$%^&*'

%21%40%23%24%25%5E%26%2A%22

$urldecode '%21%40%23%24%25%5E%26%2A%22'

!@#$%^&*