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Full Discussion: Calling a Perl script in a Bash script -Odd Situation
Top Forums Shell Programming and Scripting Calling a Perl script in a Bash script -Odd Situation Post 302555752 by leepet01 on Thursday 15th of September 2011 04:23:31 PM
Old 09-15-2011
Calling a Perl script in a Bash script -Odd Situation
I am creating a startup script for an application. This application's startup script is in bash. It will also need to call a perl script (which I will not be able to modify) for the application environment prior to calling the application. The problem is that this perl script creates a new shell when started and will not automatically exit. Therefore it will sit until I enter “exit”, then the application will start, but I lost the environment I need.

Simple Application Script Example:
Code:
#!/bin/bash
 
# call perl script that sets the application environment
Perl_env_script
 
# startup application
APP_START

Putting the “Perl_env_script” in the background still placed the needed environment outside the application and I don't get the environment I need when the application starts.

I also want to mention that I can manually type the command `Perl_env_script`, which leaves me in its current shell, where I can manually start the application normally. Unfortunately, this will be used from an application menu launcher and so I need to automate this process.

If this cannot be done, then I'll take the time to go through the perl script (which is huge and confusing) to gain the environment I need, but I was hoping there was an easier way.

Thanks for your help!
Frustrated Newbie

---------- Post updated at 03:23 PM ---------- Previous update was at 12:13 PM ----------

I got it working, but it's a two-step process:

I created a one-line script that calls the Perl script within an xterm:
Code:
xterm -e Perl_env_script

Once the xterm is up, the user will have to start another script to start the application:

Code:
APP_START:
#!/bin/sh
export APP_HOME=/testapps/apps
 
${APP_HOME}/bin/APPclient

I don't like the two-step process, but it is working. I might receive some complaints from users. So, if you know of a more streamlined way of doing this, please let me know.

Again, Thanks!
 

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