CODEWITHSUNDEEP
javawindowsmacosprocessbuilder
Vectorv12
Vectorv12

Reputation: 3

Translating ProcessBuilder command into something Linux can understand

Hello Stack Overflow !

I am currently working on a Java program that is essentially a digitized character sheet for a Dungeons and Dragons style adventure. This program makes extensive use of a ClearScreen() method that I made, which makes use of a process builder, as shown below:

new ProcessBuilder( "cmd", "/c", "cls" ).inheritIO().start().waitFor();

Recently I learned that one of my players has a Mac, and as such I need to translate the cmd command that this process builder uses into its Mac/Linux equivalent. I already did some research beforehand, and managed to construct the following ProcessBuilder:

new ProcessBuilder("terminal","","clear");

However, I don't know what the equivalent of /c would be, which is an argument that causes CMD to close after the command is executed. Thus, I would like help in filling in the missing argument (or maybe a more efficient means of achieving the same result). Thank you in advance!

(also, my apologies in advance for any misused terms ^^; I'm still learning how to program in Java, and I've never owned a Mac so I'm kind of stumbling around in the dark here. I should clarify that the program runs out of the Windows command-prompt interface, using a .bat file called rubberglove.bat.)

Upvotes: 0

Views: 82

Answers (1)

that other guy
that other guy

Reputation: 123410

On MacOS (and GNU/Linux, and *BSD), clear is a stand-alone program that doesn't require the services of an additional shell or program. Just call it directly:

new ProcessBuilder("clear").inheritIO().start().waitFor();

Or simply print the equivalent ANSI escape codes to clear the screen and set the cursor to the origin. This works on all standard Unix-like terminals, and is essentially what clear ends up doing:

System.out.print("\u001B[H\u001B[J");

Upvotes: 1

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