PowerShell - System Administration
What will this PowerShell command output?
Write-Output $env:NON_EXISTENT_VAR
What will this PowerShell command output?
medium📝 Command Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Check behavior for unset environment variables
Accessing a non-existent environment variable returns an empty string, not an error.Step 2: Confirm output of Write-Output
Write-Outputprints the empty string, resulting in no visible output.Final Answer:
Empty string -> Option BQuick Check:
Unset env var output = B [OK]
Quick Trick: Unset env vars return empty string, not error [OK]
Common Mistakes:
- Expecting error on missing variable
- Printing variable name instead of value
- Confusing null with empty string
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