Convert English text from lowercase to uppercase using the bundled Python script.
Run the script to_upper.py in this skill directory. It accepts the text to convert
in one of two ways:
```bash
python "$CLAUDE_SKILL_DIR/to_upper.py" "hello world"
```
or large/multiline text:
```bash
cat input.txt | python "$CLAUDE_SKILL_DIR/to_upper.py"
```
The script prints the uppercased result to stdout. Only ASCII English letters a-z
are affected; digits, punctuation, whitespace, and non-English characters pass
through unchanged.
contains quotes, newlines, or shell-special characters.
write the output back.
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