How to run the perl script from java ?
Hi , I need to run the pearl script from the server and to get the result of the script thro' java using SSH
Is there any 3rd party SSH API in java ?
Please help me out
thanks in advance
karthik
This seems like a very strange thing to want to do.
What is the perl script doing?
Do other programs (not some shell script) access this server-side perl script from a different machine?
If so how do they do it?
What currently triggers the perl script to execute?
What currently handles the output from the perl script?
If you can answer these questions (and understand the answers) you should be able to come up with a different approach to this.
You do not really want to call a remote perl script from a Java program, you want to achieve the effect you think that would have if you could do it.
So find the answers to the above questions, write them on 3" x 5" cards and lay them out on your desk.
What flow of control needs to happen? Which piece of code needs to produce or consume which piece of data?
If that fails, ask you self or who ever is making you do this what are the use-cases?
If you do not know what use-cases are or do not understand them well enough try reading
Use Case Modeling (The Addison-Wesley Object Technology Series) by Kurt Bittner and Ian Spence (Paperback - Aug 30, 2002)
http://www.amazon.com/s/ref=nb_ss_gw/002-7908514-4043267?url=search-alias%3Dstripbooks&field-keywords=use+cases&x=0&y=0
It is a short and easy to read book on the subject and also one of the best.
You MUST understand WHAT you are trying to achieve before you can decide HOW you are going to achieve it.
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I should have added this bit of information:
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Sun Microsystems Inc. SunOS 5.10 Generic January 2005
$
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$
$
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$
$
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$
$
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Sun Microsystems Inc. SunOS 5.10 Generic January 2005
$
$
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scripts
$
$
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$
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code:
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at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
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Caused by: java.io.IOException: java.io.IOException: error=2, No such file or directory
at java.lang.UNIXProcess.<init>(UNIXProcess.java:164)
at java.lang.ProcessImpl.start(ProcessImpl.java:81)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:467)
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error executing perl /home/deaddev/test1.pljschell wrote:
sabre150 wrote:
As and alternative you can useString cmd123 = "perl /home/deaddev/test1.pl";Using the single string approach YOU have to do any quoting so with this line no quoting takes place and the script /home/deaddev/test1.pl will be executed.Although that should be true apparently it isn't. I have just run
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new SyncPipe(p.getInputStream(), System.out).run();
int returnCode = p.waitFor();
System.out.println("Return code = " + returnCode);which correctly executes the perl script xxx.pl.
P.S. SyncPipe is a Runnable that copies an InputStream to an OutputStream.
Edited by: sabre150 on Oct 14, 2008 9:19 AM
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