Creating Java process

Question

I am trying to create a process to invoke "ls *.xml".

This code works ok:

Process p=Runtime.getRuntime().exec("ls build.xml");
build.xml

This code is wrong:

Process p=Runtime.getRuntime().exec("ls *.xml");
// this is the output
Cannot run program "ls *.xml": error=2, No such file or directory

Any idea?

what happens if you use the array form of exec: `Runtime.getRuntime().exec({"ls", "*.xml"});` — Timothy Truckle, Oct 17 '16 at 08:46
Possible duplicate of [Executing bash script with tilde in path](http://stackoverflow.com/questions/15273524/executing-bash-script-with-tilde-in-path) — Erwin Bolwidt, Oct 17 '16 at 08:59
Note: when you run exec, you are not running a shell which can understand things like `*` and `>` — Peter Lawrey, Oct 17 '16 at 08:59

score 1 · Answer 1 · answered Oct 17 '16 at 09:29

1

That's because wildcard expansion is done by Bash shell, not by ls command.

If all you want to do is list files, use Files.newDirectoryStream:

Files.newDirectoryStream(Paths.get(".")), p -> p.toString().endsWith(".xml")).forEach(System.out::println)

answered Oct 17 '16 at 09:29

Alexey Soshin

1 Answers1