This article is from a FAQ concerning SCO operating systems. While some of the information may be applicable to any OS, or any Unix or Linux OS, it may be specific to SCO Xenix, Open There is lots of Linux, Mac OS X and general Unix info elsewhere on this site: Search this site is the best way to find anything.
Environment variables are made global by exporting them:
Once the variable is exported, you can change it's value and do NOT have to export it again. If you need everyone to have a particular variable set, put it in /etc/profile and export it there.
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