--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fschmidt/util/java/ProcUtils.java	Sun Oct 05 17:24:15 2025 -0600
@@ -0,0 +1,72 @@
+/*
+Copyright (c) 2008  Franklin Schmidt <fschmidt@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+package fschmidt.util.java;
+
+import java.io.*;
+
+
+public final class ProcUtils {
+	private ProcUtils() {}  // never
+
+	public static class ProcException extends IOException {
+		private ProcException(String msg) {
+			super(msg);
+		}
+	}
+
+	public static void checkProc(Process proc)
+		throws IOException, ProcException
+	{
+		try {
+			proc.waitFor();
+		} catch(InterruptedException e) {
+			throw new RuntimeException(e);
+		}
+		int exitVal = proc.exitValue();
+		if( exitVal != 0 ) {
+			Reader err = new InputStreamReader(proc.getErrorStream());
+			String error = IoUtils.readAll(err);
+			err.close();
+			throw new ProcException(error);
+		}
+	}
+
+	public static String getOutput(Process proc)
+		throws IOException
+	{
+		BufferedReader in = new BufferedReader(new InputStreamReader(proc.getInputStream()));
+		String s = IoUtils.readAll(in);
+		in.close();
+		return s;
+	}
+
+	public static String exec(String[] cmd)
+		throws IOException, ProcException
+	{
+		Process proc = Runtime.getRuntime().exec(cmd);
+		String s = getOutput(proc);
+		checkProc(proc);
+		return s;
+	}
+
+}