How to close a chrome browser tab via terminal?

only linux answer:

Perhaps wmctrl could be of some assistance. You could use the -c option that closes a window gracefully:

wmctrl -c "tab title"

The string chrome is matched against the window titles. Note that the window might not close if some message pops-up (e.g. when you have multiple tabs open).

You can look into chrome remote debugging:

chromium --remote-debugging-port=9222

and connect to it with some kind of client ( https://github.com/cyrus-and/chrome-remote-interface seems good). The debug protocol is used for a number of applications, but with some work you can achieve the kind of functionality you want. Here are some docs for you to check out: https://chromedevtools.github.io/devtools-protocol/tot/Page

Or perhaps chromix-too, which is based on an extension, daemon and client architecture.

https://github.com/smblott-github/chromix-too

This seems to be much easier to use, and might be exactly what you want, though the extension is a bit inconvenient, and there seems to be demand for more capabilities to be supported.

EDIT The query you would be looking for is:

        const chrome = require('ox-chrome-remote-interface');         chrome.List().then(tabs=>{            const list = tabs                .filter(t=>t.type == 'page' &&  t.title.includes(TITLE))                .map(t => t.id)            if(list.length==1){                chrome.Close({id:list[0]})            } else {                console.error(`${list.length} tabs match.`)            }        })