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Full Discussion: Overriding PATH
Top Forums Shell Programming and Scripting Overriding PATH Post 302164893 by brainyoung on Wednesday 6th of February 2008 07:13:17 AM
Old 02-06-2008
Overriding PATH
Hello,

I'm using Sun solaris .

I'm trying to override the environmental variable in my script, however when I execute the script, the PATH whatever being set in .profile is taking precedence.

I have done the sanity checks like order of my entry in path, permissions for the user etc.,

To be precise, I have two versions of Java in my server , my .profile refers to java1.4, however for a specific application which is trigerred from bash shell script,I want to use Java1.6.

Code:
#!/bin/bash
JAVA_HOME=/export/home/def/java/jre
export JAVA_HOME

PATH=$JAVA_HOME/bin/sparcv9:$PATH
export PATH

LD_LIBRARY_PATH=$JAVA_HOME/lib/sparcv9:$JAVA_HOME/lib/sparcv9/server:$LD_LIBRARY_PATH
export LD_LIBRARY_PATH

CASSPATH=/export/home/def/Scripts/XL/:/export/home/def/Scripts/XL/jar/bin/xalan.jar:/export/home/def/Scripts/XL/jar/bin/xercesl.jar;
export CLASSPATH


echo "java home is ----> $JAVA_HOME"
echo "\n"
echo "java path is ----> $PATH"
echo "\n"
echo "java LD_LIB is  ----> $LD_LIBRARY_PATH"
echo "\n"
echo "java classpath  is  ----> $CLASSPATH"

echo "\n"
echo "java instance ----->"`which java`
echo "\n"
echo "java version ----->"`java -version`

java app1 start


I'm epecting this script to calll the java instance set in JAVA_HOME, however it still calls the /usr/bin/java (being set in .profile).
However if I change the values of environmental variables provided above in .profile, then I'm able to call the appropriate java version.
I don't wanna apply this change for the entire user but for just the session.
Can I not override environmental variables for a session alone ?

Thanks
 

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LEARN ABOUT LINUX

shtool-path

SHTOOL-PATH.TMP(1)					      GNU Portable Shell Tool						SHTOOL-PATH.TMP(1)

NAME

       shtool-path - GNU shtool command dealing with shell path variables

SYNOPSIS

       shtool path [-s|--suppress] [-r|--reverse] [-d|--dirname] [-b|--basename] [-m|--magic] [-p|--path path] str [str ...]

DESCRIPTION

       This command deals with shell $PATH variables. It can find a program through one or more filenames given by one or more str arguments.  It
       prints the absolute filesystem path to the program displayed on "stdout" plus an exit code of 0 if it was really found.

OPTIONS

       The following command line options are available.

       -s, --suppress
	   Supress output. Useful to only test whether a program exists with the help of the return code.

       -r, --reverse
	   Transform a forward path to a subdirectory into a reverse path.

       -d, --dirname
	   Output the directory name of str.

       -b, --basename
	   Output the base name of str.

       -m, --magic
	   Enable advanced magic search for ""perl"" and ""cpp"".

       -p, --path path
	   Search in path. Default is to search in $PATH.

EXAMPLE

	#   shell script
	awk=`shtool path -p "${PATH}:." gawk nawk awk`
	perl=`shtool path -m perl`
	cpp=`shtool path -m cpp`
	revpath=`shtool path -r path/to/subdir`

HISTORY

       The GNU shtool path command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 1998 for Apache. It was later taken
       over into GNU shtool.

SEE ALSO

       shtool(1), which(1).

18-Jul-2008							   shtool 2.0.8 						SHTOOL-PATH.TMP(1)
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