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tldr/pages/common/case.md
Colin 81ac166eed case: add page (#1930)
2018-02-20 20:58:20 +00:00

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case

Branch based on the value of an expression.

  • Match a variable against string literals to decide which command to run:

case {{$tocount}} in {{words}}) {{wc -w README}}; ;; {{lines}}) {{wc -l README}}; ;; esac

  • Combine patterns with |, use * as a fallback pattern:

case {{$tocount}} in {{[wW]|words}}) {{wc -w README}}; ;; {{[lL]|lines}}) {{wc -l README}}; ;; *) {{echo "what?"}}; ;; esac