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case: refresh page (#15428)

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pages/common/case.md
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@ -5,8 +5,16 @@
- Match a variable against string literals to decide which command to run: - Match a variable against string literals to decide which command to run:
`case {{$tocount}} in {{words}}) {{wc -w README}}; ;; {{lines}}) {{wc -l README}}; ;; esac` `case {{$COUNTRULE}} in {{words}}) {{wc -w README}} ;; {{lines}}) {{wc -l README}} ;; esac`
- Combine patterns with |, use * as a fallback pattern: - Combine patterns with |, use * as a fallback pattern:
`case {{$tocount}} in {{[wW]|words}}) {{wc -w README}}; ;; {{[lL]|lines}}) {{wc -l README}}; ;; *) {{echo "what?"}}; ;; esac` `case {{$COUNTRULE}} in {{[wW]|words}}) {{wc -w README}} ;; {{[lL]|lines}}) {{wc -l README}} ;; *) {{echo "what?"}}; ;; esac`
- Allow matching multiple patterns:
`case {{$ANIMAL}} in {{cat}}) echo "It's a cat" ;;& {{cat|dog}}) echo "It's a cat or a dog" ;;& *) echo "Fallback" ;; esac`
- Continue to the next pattern's commands without checking the pattern:
`case {{$ANIMAL}} in {{cat}}) echo "It's a cat" ;& {{dog}}) echo "It's either a dog or cat fell through" ;& *) echo "Fallback" ;; esac`