{"id":"process-output-shell-commands-script","text":"Process output of shell commands within a script using command substitution $(command). Captures stdout for use in variable assignments, conditionals, and loops. Can be nested and is preferred over backticks.","truth_value":"IN","source":"repo:entries/2026/03/04/command-substitution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"process-output-shell-commands-script","truth_value":"IN","reason":"premise"}]}}