From the course: Troubleshooting and Debugging Bash
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Environment variables - Bash Tutorial
From the course: Troubleshooting and Debugging Bash
Environment variables
- [Instructor] Environment variables may be called by your script using a dollar sign, followed by any existing variable in your env output. You should use them when you need information that is defined in the environment, but it's possible for an environment variable to pass data that you don't expect. For example, another administrator could configure the environment with additional variables or change the values in the default environment system. Because your system depends on the information being correct, your script will not behave as expected if that information is modified or missing. In /user/sbin, there is an executable called env. Env, if you run it in the terminal, will reveal all configured environment variables when you issue it without a flag. Environment variables can be passed into a script by calling them. Options include but are not limited to $PWD, which is the working directory where your script is…
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