Caution - At one point I was running a greasemonkey script to replace religious words with funny alternatives. Had a bad time when I installed it and forgot about it and it replaced my manager's first name, Christian, with the funny alternative.

this one prevents this by adding an obvious paperclip at the corner of the page, when replacements do happen.

This looks to be a very specific tool to check URLs on the command line. Terminal emulators don't care about that. Even shells running in those terminal emulators don't care about those specifics because why would they. One could easily want to do something with a funny url like that that doesn't involve content fetching etc.

Similarly I have for Linux

    epoch () {
        if [[ -z "${1:-}" ]]
        then
                date +'%s'
        else
                date --date="@${1}"
        fi
    }

    % epoch
    1761245789

    % epoch 1761245789
    Thu Oct 23 11:56:29 PDT 2025

On Linux you also have

    % cat /proc/sys/kernel/random/uuid
    464a4e91-5ce4-47b6-bb09-8a60fde572fb

Failed twenty ways to Sunday if I set `ZSHZ_DATA="$HOME/.local/share/zsh-z"` . Could not get it to recover from it.

"Just"