I wonder how many people know a few of these (like ctrl-a and ctrl-e and other navigation commands) come not from bash per se but from readline[0]. It isn't a surprise, then, that these mirror emacs commands. For example, one I use often is ctrl-k to kill to the end of a line...and, yes, just like emacs, you can yank it back with ctrl-y too :)...I often do this if I type out a huge command, forget that I needed to type another before, so I use that to "save" commands before execution. That is, it's essentially cheap copy and paste on the commandline.

Cherry on top? These work on other readline using tools! They work in the interactive repl's like python, node, irb, ghcim the exact same shortcuts... it makes working with repl's much more pleasant for me.

[0] https://cnswww.cns.cwru.edu/php/chet/readline/rltop.html [1] quick note, node might use a readline like but it doesn't support yanking (pasting) unfortunately.