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Full Discussion: Linux through Java code
Operating Systems Linux Linux through Java code Post 302685327 by Dorothy on Sunday 12th of August 2012 08:21:54 AM
Old 08-12-2012
Linux through Java code

Hi

How can I write a Java program to execute Linux commands? What is the best approach:
  • Invoking the Linux shell within Java and executing commands
  • or, using the Java APIs to do the stuff. Since it is platform independent, it'll know itself what to do. We need not check which OS the Java code is executing on. Simply execute the command
 

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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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