Small changes to make this more suitable as a command line utility

README.md

@@ -1,11 +1,12 @@
 This package takes a markdown file, and creates a new markdown file in which each link is accompanied by an archive.org link, in the format [...](original link) ([a](archive.org link)) 
 
 ## How to install
-Copy [this file](https://github.com/NunoSempere/longNowForMd/blob/master/longnowformd.sh) to your .bashrc file, or, for Ubuntu distributions Focal Fossa and above:
+Copy [this file](https://github.com/NunoSempere/longNowForMd/blob/master/longnowformd.sh) to your .bashrc file, or, for Ubuntu distributions 20.04 (Focal Fossa) and above:
 
 ```
 $ sudo add-apt-repository ppa:nunosempere/longnowformd
 $ sudo apt-get update
+$ sudo apt install longnowformd
 ```
 
 This utility requires [archivenow](https://github.com/oduwsdl/archivenow) as a dependency, which itself requires a python installation. It can be installed with

longnow

@@ -1,3 +1,5 @@
+#!/bin/bash
+
 function getMdLinks(){ # Use: Takes a markdown file file.md, extracts all links, finds the unique ones and saves them to file.md.links
   echo ""
   echo "Extracting links..."
@@ -91,3 +93,4 @@ function longnow(){
   fi 
 }
 
+longnow "$1" ## don't copy this line into your .bashrc file