On Mon, Nov 25, 2019, 15:31 SternData <subscribed-lists@sterndata.com> wrote:
A long time ago, in an operating system far, far away I used a tool
called PCED.  It had one really nice feature:  If I had typed a command like

  copy a b

it saved it, just like bash does.  But when I typed

   copy

and pressed up-arrow, it would filter the history entries and show only
those that started with "copy".

I'm already using autojump for the cd command. Is there something to
provide this filter on using up-arrow to scroll through past commands?

Yes: in bash, just start typing what you're looking for after ctrl-r. Ctrl-r is bound by default to incremental search backwards.