[EXEC-67] Shell (-c) command execution - fire and forget

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 1.1
• Labels: -c sh

Environment

OS: Mac OS X 10.7.4
Java version: "1.6.0_35"

• Assignee: Unassigned
• Reporter: Stuart Broad
• Created: 25/Sep/12 12:55
• Updated: 28/Sep/12 20:22
• Resolved: 25/Sep/12 16:36

Description

I am attempting to 'fire and forget' a process. Using java ProcessBuilder I can do this as follows:

ProcessBuilder pb = new ProcessBuilder("sh", "-c", "nohup ping -c 20 localhost > /dev/null 2>&1 &");
...

Running using Commons Exec I get the following error:

sh: nohup ping -c 20 localhost > /dev/null 2>&1 &: No such file or directory

The stripped down code is as follows:

...
DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();
PumpStreamHandler psh = new PumpStreamHandler(logHandler);
CommandLine cl = CommandLine.parse("sh");
cl.addArgument("-c");
cl.addArgument("nohup ping -c 20 localhost > /dev/null 2>&1 &");
DefaultExecutor exec = new DefaultExecutor();
mWatchDog = new ExecuteWatchdog(ExecuteWatchdog.INFINITE_TIMEOUT);
exec.setStreamHandler(psh);
exec.setWatchdog(mWatchDog);
exec.execute(cl, resultHandler);
...