[Solved] Why does this script fail?$env:123VAR = 'value' — Ans: Variable names cannot start with a number | PowerShell

PowerShell - System Administration

Why does this script fail?

$env:123VAR = 'value'

AVariable names cannot start with a number

BStrings must be in double quotes

CEnvironment variables are read-only

DMissing $ before variable name

Step-by-Step Solution

Solution:

Step 1: Check variable naming rules
Environment variable names must start with a letter or underscore, not a number.
Step 2: Validate other options
Strings can be single or double quoted, env vars are writable, and $env: prefix is present.
Final Answer:
Variable names cannot start with a number -> Option A
Quick Check:
Env var names must start with letter [OK]

Quick Trick: Env var names must start with letter or underscore [OK]

Common Mistakes:

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Why does this script fail?