Thursday, September 24, 2015

How to clear terminal screen in Clojure

Print some ANSI characters
(print (str (char 27) "[2J")) ; clear screen
(print (str (char 27) "[;H")) ; move cursor to the top left corner of the screen


Julian Laffey said...

Works well, thank you!

Brendon Williams said...

Awesome, perfect. Thanks.

Brendon Williams said...

Unfortunately, the cursor moving ANSI hasn't worked in any console I've tried it in (including the native Window's console). I had to resort to using this hack function:

(defn move-cursor-to [x y]
(let [r #(apply str (repeat % %2))]
(print (str (r y \newline)
(r x \space)))))

Useful commands for observe running JVM process

$ jcmd List running processes $ jinfo  Get details of a process $ jps -lvm List running processes with params