如何自动导出运行ruby脚本所需的oracle环境变量？(How to automatically export oracle environment variable required to run a ruby script?)

 我的ruby脚本需要连接到Oracle数据库。 所以我需要在脚本运行之前正确地导出ORACLE_HOME和LD_LIBRARY_PATH。 有没有一种方法可以在不使用shell脚本的情况下导出这些env变量？ 我试图把ENV ['ORACLE_HOME'] ='/ usr / local / oracle_client'放在脚本的第一行，它不起作用。 现在唯一可行的方法是编写一个shell脚本，在那里导出这些变量，然后在那里运行ruby。 shell脚本如下所示： 
 
 export ORACLE_HOME ='/ usr / local / oracle_client'export LD_LIBRARY_PATH ='/ usr / local / oracle_client / lib'ruby myscript.rb --options 
 
 这有点难看，因为用户必须进入shell脚本来更改选项。 我想知道是否有更好的方法来做到这一点。 所以用户可以在命令行中执行：ruby myscript.rb --options 

My ruby script requires connection to an Oracle database. So I need to export ORACLE_HOME and LD_LIBRARY_PATH correctly before the script would run. Is there a way that I can export those env variables without using shell script? I tried to put ENV['ORACLE_HOME'] = '/usr/local/oracle_client' at the first line of the script and it doesn't work. Now the only way it would work is to write a shell script, where export those variables and then run ruby there. The shell script looks like:
 
export ORACLE_HOME='/usr/local/oracle_client' export LD_LIBRARY_PATH='/usr/local/oracle_client/lib' ruby myscript.rb --options
 
It's kinda ugly because user has to go inside the shell script to change options. I'm wondering whether there's a better way of doing it. So user can just do at command line: ruby myscript.rb --options

原文：https://stackoverflow.com/questions/1495035