Powershell Windows
If you've ever hit cryptic PowerShell errors about "unexpected token 'or'" or had emoji break your scripts, this will save you time. It's a reference for the syntax gotchas that trip people up: why you need double parentheses around cmdlets in logical operators, why Unicode characters cause failures, and how to handle nulls before accessing properties. Also covers JSON depth issues, error handling patterns, and a basic script template. Think of it as the condensed version of lessons learned from Windows automation work. You'll refer back to the operator syntax table and Unicode restrictions more than you'd expect.
- skills.sh installs
- 123
- GitHub stars
- 7.6K
- last updated
- Jun 3, 2026
Install
$ npx -y skills add vudovn/antigravity-kit --skill powershell-windows --agent claude-codeInstalls into .claude/skills of the current project.
Files
PowerShell Windows Patterns
Critical patterns and pitfalls for Windows PowerShell.
1. Operator Syntax Rules
CRITICAL: Parentheses Required
| ❌ Wrong | ✅ Correct |
|---|---|
if (Test-Path "a" -or Test-Path "b") | if ((Test-Path "a") -or (Test-Path "b")) |
if (Get-Item $x -and $y -eq 5) | if ((Get-Item $x) -and ($y -eq 5)) |
Rule: Each cmdlet call MUST be in parentheses when using logical operators.
2. Unicode/Emoji Restriction
CRITICAL: No Unicode in Scripts
| Purpose | ❌ Don't Use | ✅ Use |
|---|---|---|
| Success | ✅ ✓ | [OK] [+] |
| Error | ❌ ✗ 🔴 | [!] [X] |
| Warning | ⚠️ 🟡 | [*] [WARN] |
| Info | ℹ️ 🔵 | [i] [INFO] |
| Progress | ⏳ | [...] |
Rule: Use ASCII characters only in PowerShell scripts.
3. Null Check Patterns
Always Check Before Access
| ❌ Wrong | ✅ Correct |
|---|---|
$array.Count -gt 0 | $array -and $array.Count -gt 0 |
$text.Length | if ($text) { $text.Length } |
4. String Interpolation
Complex Expressions
| ❌ Wrong | ✅ Correct |
|---|---|
"Value: $($obj.prop.sub)" | Store in variable first |
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- Repository
- github.com/vudovn/antigravity-kit
- First seen
- Jun 3, 2026
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