command-line tool for joining, splitting, inspecting pems

[glyph]

It would be nice to have a command-line tool to perform various simple operations on pems. Particularly, pem join somefile.pem otherfile.pem --into=single.pem to turn somefile.pem and otherfile.pem into a single file single.pem and pem split somefile.pem to get somefile.1.crt.pem, somefile.2.key.pem etc.

With pyOpenSSL installed, this could potentially even give the split files meaningful names.

No less than 3 times in the last 3 weeks, I've been staring at incomprehensible caused by attempting to join and split non-newline-terminated .pem files together with cat and regexes. These tasks aren't complex but having reliable ways to do them would be super handy.

[hynek]

That sounds like a pretty neat idea.

I’m generally thinking about moving the Twisted-specific parts into Twisted and make pem more useful for generic use-cases. This certainly sounds like one.

[hynek]

um is this still something you think is useful – barely 10 years later?

[glyph]

@hynek I think that with better tooling (certbot) and standardization (ACME) I spend a lot less time needing to do stuff like this on individual files. But the main thing I wanted to do with this, I am now trying to get a computer to do, instead: twisted/twisted#11861