As you already know, bash heavily uses the readline library to provide keyboard shortcuts, and this library is configured via the /etc/inputrc.

While playing on a remote machine, I found that the CTRL+{left,right} arrow combination to move between words wasn’t working – and was instead printing “5C” and “5D”. It was necessary to tell bash to associate that combo with left|right move!

The first thing to do is to print the raw characters associated to CTRL+left. To do this type:
CTRL+V and then CTRL+left
You’ll see
^[[1;5D

Ok: that’s the sequence to map – where “^[” corresponds to the escape key aka \e.

Now let’s tell bash to bind that sequence with backward-word, and everything will work as expected!
# bind '"\e[1;5D": backward-word';


Now we can edit the /etc/inputrc , where I added two more association to the existing ones:
# Those two were still existing
"\e[5C": forward-word
"\e[5D": backward-word
# And now two more
"\e[1;5C": forward-word
"\e[1;5D": backward-word


You can even listen all configured bindings with
#bind -p