How about env variables

I was wondering about env variables in Linux system. Many users using them to setup applications. But did you know about env variables are visible to other ?

Long time ago, there was one system per server and everything was correct. But now systems, especially in cloud environments are used by many users.

Let’s see what exist in file /proc/1/environ

As you can see there is some system variables set in those file.

But many sites are using env variables to pass application specyfic setting like users and passwords… Now you know.

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