Setting java and returning version Post: 302828397

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Top Forums Shell Programming and Scripting Setting java and returning version Post 302828397 by bigbenn on Tuesday 2nd of July 2013 11:20:49 AM

07-02-2013

Registered User

Setting java and returning version

I am currently trying to write a script and I am not that great at wording it with taking in user input, it will do the following:

ask " Have you stopped instances? "
if instances are stopped, then I want it to change to the default java to 64 bits, and print the current version of java.
Afterwards I want it to return the default back to 32 bits.

Basically I want it to remove the existing symlink and recreate a new link to point to the other java version and display the info.

Code:

 
#!/bin/ksh
# -*- Mode: Bash; tab-width: 2; indent-tabs-mode: nil -*- vim:sta:et:sw=2:ts=2:syntax=sh
 
read -p " Have you stop the instances? [yn]" answer
if [ $answer = y ] 
then 
read -p " Do you want to set Java default to 64 bits? [yn]" answer
  if [ $answer = y ]
then (setServerJava -b 64)
elif
read -p " Do you want to set Java default to 32 bits? [yn]" answer
  if [ $answer = y ]
then (setServerJava -b 32) 
else 
echo "You have not stopped instances yet, cannot set Java default."
fi
 
 if [ setServerjava -b 64 ]
then
JAVA_VERSION=`java -version 2>&1 |awk 'NR==1{ gsub(/"/,""); print $3 }'`
# export JAVA_VERSION
echo $JAVA_VERSION
 fi
fi

any and all help is GREATLY appreciated, thanx

Last edited by bigbenn; 07-02-2013 at 12:47 PM..

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airport-linkmon

AIRPORT-LINKMON(1)					      General Commands Manual						AIRPORT-LINKMON(1)

NAME

       airport-linkmon	-  Wireless link quality monitor for the original Apple AirPort Base Station ("Graphite") and the Lucent RG-1000 base sta-
       tion

SYNOPSIS

       airport-linkmon

DESCRIPTION

       airport-linkmon allows you to measure the signal strength and noise on the wireless links between your  base  station  and  its	associated
       wireless hosts.

OPTIONS

       airport-linkmon	accepts  no  command-line  options.  airport-linkmon  is  a  wrapper script around the LinkMonitor.jar jar file located in
       /usr/share/java/airport-utils.

       You can set the JAVACMD environment variable to use a specific JVM instead of the one chosen by the wrapper script. Set the DEBUG  environ-
       ment variable to 1 to get the debug output from the wrapper script.

ENVIRONMENT VARIABLES

       DEBUG  Set this variable to 1 to get the debug output from the wrapper script.

       JAVACMD
	      The  full  path  to  the	Java  Virtual  Machine	to  use.  By  default,	the  wrapper  uses JAVACMD; if it is not set, it looks for
	      JAVA_BINDIR/java, then for JAVA_HOME/bin/java before looking for a java executable in the PATH. In the latter case, the JVM used can
	      be configured using the Debian alternatives system (see update-alternatives(8)).

       JAVA_HOME
	      The full path where your JDK/JRE is installed.

       JAVA_BINDIR
	      The full path to the directory where the java executable is located.

       JAVA_ARGS
	      Extra command-line arguments to be passed to the Java Virtual Machine.

AUTHOR

       airport-linkmon was written by Jon Sevy <jsevy@cs.drexel.edu>.

       This manual page was written by Julien BLACHE <jblache@debian.org>, for the Debian project (but may be used by others).

								   May 20, 2006 						AIRPORT-LINKMON(1)