tag

#parameter-expansion

2 posts

Shell & TerminalDeep Dive October 3, 2026 7 min read

Bash nounset: What set -u Detects, and What It Cannot Prove

Use Bash nounset deliberately by distinguishing unset from empty values, applying safe parameter defaults, and testing arrays, positional parameters, and functions.

#bash#nounset#parameter-expansion

Shell & TerminalDeep Dive October 3, 2026 8 min read

Zsh Parameter Expansion Flags: Join, Split, Quote, and Transform Safely

Use Zsh parameter-expansion flags for list transformations while preserving word boundaries and avoiding unsafe re-evaluation.

#zsh#parameter-expansion#arrays