I spent some time this weekend writing a Python script to check the SSL expiration dates for all our sites. We've been caught flat footed too many times having to run around and renew certificates that have expired. I figured this was something that should be automated. I'll post the script in a future post.

I wrote the script on my Kali VM, tested it and wanted to deploy it to one of the Raspberry Pis. I was unable to get SSH working from the VM to the Pi, so I copied the script from the VM, pasted it into sublime on my Windows machine and then FTP'd the file to the Pi. When I ran the script, I was presented with the following error:

-bash: ./my_script: /bin/bash^M: bad interpreter: No such file or directory

I recall running into this error before. Some quick Googling found this fix on stackoverflow:


I wound up switching the line endings in sublime using the View-->Line Endings menu item.