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Top Forums UNIX for Dummies Questions & Answers running unix command from java Post 302668333 by madhu_sharan on Monday 9th of July 2012 06:48:26 AM
Old 07-09-2012
[SOLVED] running unix command from java

Hi All,

I have been struggling for a week trying to run a unix command from my java program.

the unix command is:
Code:
ssh dmdev3@tsapid01-zt3d01 ':> /t3/envs/dmdev3/test/file_list.txt'

when i try to run this command directly on my unix console, it works perfectly.

but when i try it form my JAVA program, i get the below mentioned error

Code:
ksh: :> /t3/envs/dmdev3/test/file_list.txt:  not found

SmilieSmilieSmilie

below is my java code snippet that i use,
Code:
procTemp=runEnv.exec(strShellCmd);

where strShellCmd contains the entire unix command as a single string


requiring your help at the earliest cause i'm in such a desperate situation.

Thanks in advance,
Madhu.


Moderator's Comments:
Mod Comment Please use code tags next time for your code and data.

Last edited by zaxxon; 07-09-2012 at 08:56 AM.. Reason: code tags, see PM!
 

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DACS.JAVA(7)						  DACS Miscellaneous Information					      DACS.JAVA(7)

NAME
dacs.java - DACS Java support DESCRIPTION
This document describes support for Java provided by DACS. To enable Java support, DACS must be configured using the --enable-java flag. It may also be necessary to specify the location of the Java commands and include files. See dacs.install(7)[1]. Note Java support is currently very limited and should be considered experimental. It is currently only possible to call dacsauth(1)[2] and dacscheck(1)[3] using the Java Native Interface (JNI) provided. The command line arguments to both of these commands are exactly as documented in their manual pages. Each argument is passed as a String. The code is not thread-safe and is probably not suitable for being called many times within a particular process due to assumptions it makes about dynamic memory allocation. There are no immediate plans to improve or extend Java support. Using the existing capability to build the JNI layer, however, it should not be difficult for an experienced Java programmer to build upon the example Java code provided. With Java support enabled, building DACS will copy the JNI shared library and a .jar file to the library directory (default: /usr/local/dacs/lib), and the JNI include files to the include directory (default: /usr/local/dacs/include). The tools/java/jni distribution directory contains a simple script called javarun that demonstrates how to run dacsauth or dacscheck as a Java application. For example, to validate the Unix password for user somebody, run (as root): ./javarun dacsauth -m unix suff -user somebody -prompt DIAGNOSTICS
The return codes are as documented in the command's manual page. AUTHOR
Distributed Systems Software (www.dss.ca[4]) COPYING
Copyright2003-2012 Distributed Systems Software. See the LICENSE[5] file that accompanies the distribution for licensing information. NOTES
1. dacs.install(7) http://dacs.dss.ca/man/dacs.install.7.html 2. dacsauth(1) http://dacs.dss.ca/man/dacsauth.1.html 3. dacscheck(1) http://dacs.dss.ca/man/dacscheck.1.html 4. www.dss.ca http://www.dss.ca 5. LICENSE http://dacs.dss.ca/man/../misc/LICENSE DACS 1.4.27b 10/22/2012 DACS.JAVA(7)
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