I carry Emacs in Linux and Windows versions, along with xmodmap scripts to make caps lock a control key and switch it back again, on a flash drive just for that

I carry Emacs in Linux and Windows versions, along with xmodmap scripts to make caps lock a control key and switch it back again, on a flash drive just for that reason --- then I have the necessities available on every machine I sit down in front of. Servers are a different story, but the ones I work with are all running Linux and have vi, which will do.