History searching with pageup/down. Where defined?

[Banana]

In a desktop terminal (I use xfce terminal) I'm able to cycle/scroll(?) through the bash history with pageup/pagedown after typing some parts of a command.

Like vi ~/some/f[pageUp] results in searching (ctrl+r) in the bash history from last to first for those entries beginning with the already typed chars.

My question is: Where is this defined?

[skellr]

It can be found in /etc/inputrc

[Hu]

This is a readline feature, so see info readline for the full details. Per info '(readline)Readline Init File', and elaborating on skellr's answer, this is configured by the file named by the environment variable $INPUTRC, or ~/.inputrc if that is not set, or (as skellr says) /etc/inputrc if the personal rc is not available.

[Banana]

It can be found in /etc/inputrc

Yes, there it is. Currently I do not have ~/.inputrc

Thank you