Right, that's why I said to use a Bash Bunny: it's a USB mass storage stick that can also emulate a USB keyboard (there's a few buttons on the stick to switch modes), so you'd be at the computer, open up a terminal and open the editor for a new bash/emacs config file, then plug-in the stick in keyboard mode and press the start button on the stick and after a few seconds it should have dumped kilobytes of data into the file which you can then save locally and so take your bash/shell/emacs/etc settings with you, even without needing USB mass-storage support (given many companies disable USB mass storage to mitigate data-exfiltration but, of course, need to allow USB mice and keyboards).