One other thing which could have prevented the shell failure is checking shell scripts with https://www.shellcheck.net/ https://www.shellcheck.net/. It helps ca

One other thing which could have prevented the shell failure is checking shell scripts with https://www.shellcheck.net/ https://www.shellcheck.net/. It helps catch common errors and places where shell errors can fail either silently (like here), or catastrophically (`rm -rf $abc/` where $abc is undefined) Perhaps that was also part of Cloudflare’s mitigations here too but not mentioned.