Shortest (sh.st) bypass script

#!/bin/bash

USER_AGENT=""
SHORTEST=$1

if [ "$SHORTEST" = "" ]; then
    echo "Usage: shst <link>"
    echo "Will work on any shorte.st link, including shorte.st and sh.st"
    exit 0
fi

SHORTEST=$(echo "$SHORTEST" | sed 's~http[s]*://~~g')

target_unformatted=$(curl -s --user-agent "$USER_AGENT" $SHORTEST | grep "<title>Redirecting")

target=$(echo $target_unformatted | cut -d "<" -f 2 | cut -d ">" -f 2 | cut -c 16-)

echo "$SHORTEST -> $target"