How do I get the command history in a screen session using Bash?

Question

If I start a screen session with screen -dmS name, how would I access the command history of that screen session with a script?

Using the ↑, the

Answer 1

I put the next lines into my .bashrc:

case "$TERM" in
   screen)
       declare SCREEN_NAME=$(echo $STY | sed -nr 's/[^.]*\.(.*)/\1/p')
       if [[ $SCREEN_NAME ]]; then
           HISTFILE="${HISTFILE}.${SCREEN_NAME}.${WINDOW}"
           declare -p HISTFILE
       fi
       unset SCREEN_NAME
       ;;
   *)
       ;;
esac

My default .bashrc has this 'case' basically with 'xterm*|rxvt*)' value, so I only added my 'screen' part into it. If you have not this 'case', you can use the next instead of it:

if [[ $TERM == screen ]]; then
   declare SCREEN_NAME=$(echo $STY | sed -nr 's/[^.]*\.(.*)/\1/p')
   if [[ $SCREEN_NAME ]]; then
       HISTFILE="${HISTFILE}.${SCREEN_NAME}.${WINDOW}"
       declare -p HISTFILE
   fi
   unset SCREEN_NAME
fi

And after I have an own bash_history for all window of my all screen.

Note: this not work in chroot!