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Full Discussion: Problem setting environment variables from script
Homework and Emergencies Emergency UNIX and Linux Support Problem setting environment variables from script Post 302464157 by DGPickett on Tuesday 19th of October 2010 11:50:08 AM
Old 10-19-2010
Quote:
Originally Posted by arunprasathj
This also will work

#!/bin/sh
export DESKTOP=$DESKTOP:/home/rrodrigues/Desktop
Not in my sh!
Code:
http://www.informatik.uni-frankfurt.de/doc/man/hpux/sh-bourne.1.html
 
      export [name ...]   The given names are marked for automatic export to
                          the environment of subsequently-executed commands.
                          If no arguments are given, a list of names
                          currently included in the environment are printed.
                          Function names cannot be exported.

The classic error is to run the environment script normally, as a child, and then only that child and its children get to see it, but then that child and its children end and the parent and next child are unaffected.

The trick is that after you set a variable, only you see it, but when you export the variable, the receiving process will be your child. The ". myscript" sourcing above runs the script in the current shell so it affects you and your children.

Scripts pathed $HOME/.(shell_name)rc like ~/.kshrc and ~/.bashrc are run automatically as the ksh or bash process comes to life, which is nice but excessively often, as script calls script after script. The bourne shell sh only uses ~/.profile, but for that reason and the superset offered in ksh, few people use it interactively. Other shell programs run ~/.profile once for the login shell only.
 

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LEARN ABOUT SUNOS

asadmin-export

asadmin-export(1AS)						   User Commands					       asadmin-export(1AS)

NAME

       asadmin-export, export - marks a variable name for automatic export to the environment of subsequent commands in multimode

SYNOPSIS

       export  [ name=value  [ name=value]*]

       Marks  a variable name for automatic export to the environment of subsequent commands. All subsequent commands use the variable name values
       as specified; unless you unset them or exit multimode. If only the variable name is specified, the current value of that variable  name	is
       displayed.  If  the  export  command  is  used  without	any arguments, a list of all the exported variables and their values is displayed.
       Exported shell environment variables set prior to invoking the asadmin utility are imported automatically and  set  as  exported  variables
       within asadmin. Unexported environment variables cannot be read by the asadmin utility.

OPERANDS

       name=value	       variable name and value for automatic export to the environment to be used by subsequent commands.

       Example 1: Using export to list the environment variables

       asadmin> export AS_ADMIN_HOST=bluestar AS_ADMIN_PORT=8000 AS_ADMIN_USER=admin AS_ADMIN_PASSWORD=password
       asadmin> export AS_ADMIN_PREFIX=server1.jms-service
       asadmin> export //to list the environment variables that are set
       AS_ADMIN_HOST=bluestar
       AS_ADMIN_PORT=8000
       AS_ADMIN_USER=admin
       AS_ADMIN_PASSWORD=********
       AS_ADMIN_PREFIX=server1.jms-service

       Where:  the export command lists the environment variables that are set. In this case, the environment variables have been set to: the host
       is bluestar, the port is 8000, the administrator user is admin with an associated password, and the prefix is server1.jms-service.

EXIT STATUS

       0		       command executed successfully

       1		       error in executing the command

       asadmin-unset(1AS), asadmin-multimode(1AS)

J2EE 1.4 SDK							    March 2004						       asadmin-export(1AS)
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