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Eonil
Asked: 2010-09-02 06:03:23 +0800 CST

Running shell script with no environmental variables

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As I know, newly running shell script inherits it's environment variables. Is there a way to block this? (running shell without variable inheriting)

environment-variables shell

2 Answers

  1. Best Answer

    It seems you can prefix your script with env -i which will clear the environment before running the script:

    env -i sh test.sh

    From man env:

    -i, --ignore-environment
              start with an empty environment

    Not sure why you would want to do this though...

    • 25

  2. One possibility (although it looks rather ugly):

    exec -c $SCRIPT will start $SCRIPT with an empty environment. (see man bash search for exec \[-cl\]).

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