Managing passwords with GPG

I recently moved back to working on Windows. I've been really enjoying the development setup of Windows 10 with WDL 2 which allows me to have Ubuntu right at hand. The one downside is that I can't open my Apple encrypted .dmg file. I have been in the habit of keeping my passwords in a clear text file, but storing it on an encrypted disk image that I keep on my cloud back up drive. I know that these companies claim to not check the contents, but this makes it nearly impossible. Now that I'm on Windows, I needed another solution and decided to get back to gpg. I created the following bash functions to let me view my password file quickly and easily.

Here's the code in a gist. I put the logic in my ~/.bashrc so that I can access the file by typing "pw". When I'm done getting information or adding a new password, the code re-encrypts the file, cleans up the temporary file and maintains a minimum backup of previous encrypted files.