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 last executed command appears, even in screen.

Answer 1

screen doesn’t maintain a history of the commands you type. Your shell may or may not keep a history. Since you appear to use bash, you can use the history command.

screen does appear to have a crude approximation of a history search (it merely searches the scrollback buffer for a command line. See the screen man page under the “history” command (bound to C-a { by default).