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

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, May 03 '16 at 15:33

score 1 · Accepted Answer · answered May 03 '16 at 15:32

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 03 '16 at 15:32

Bernhard

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Thank you. can i use p.waitfor() followed by getting p.exitvalue() and checking if it is zero? – Karthik May 03 '16 at 15:42
p.waitFor() returns the exit code, you can check that for zero: `p.waitFor() == 0` -> success – Bernhard May 03 '16 at 15:43

score 1 · Answer 2 · answered May 03 '16 at 15:36

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 03 '16 at 15:36

ControlAltDel

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Thank you..will try this... – Karthik May 03 '16 at 15:46

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

2 Answers2