Executing shell script from java code and check if execution has passed [duplicate]

Question

I am using below command to execute a shell script from java. I also need to check if script execution is successful without any errors. Is there any possible method to do this? Please advise.

ProcessBuilder pb = new ProcessBuilder("test.sh", arg1, arg2);
Process p = pb.start();

Thank you :) somehow it did not come up in the suggestions while typing question. Let me try that — Karthik
– Karthik, Commented May 3, 2016 at 15:33

Bernhard · Accepted Answer · 2016-05-03 15:32:54Z

1

You need to check if the process terminated which you can do with Process.waitFor() which blocks until the process completed. The return value of this call is the return code of the system command you invoked.

answered May 3, 2016 at 15:32

Bernhard

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2 Comments

Karthik Over a year ago

Thank you. can i use p.waitfor() followed by getting p.exitvalue() and checking if it is zero?

Bernhard Over a year ago

p.waitFor() returns the exit code, you can check that for zero: p.waitFor() == 0 -> success

ControlAltDel · Accepted Answer · 2016-05-03 15:36:18Z

1

To handle asynchronously, attach a threaded listener to Process.getErrorStream (ie listen to the read() method). When the process closes, you will get an IOException, releasing the thread. Then call Process.exitValue(). If you got anything coming off of the error stream or Process.exitValue() is not == 0, then that hints to probable failure

answered May 3, 2016 at 15:36

ControlAltDel

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1 Comment

Karthik Over a year ago

Thank you..will try this...

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