27 lines
559 B
Markdown
27 lines
559 B
Markdown
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---
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categories:
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- Programming Languages
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tags:
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- shell
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---
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# Functions in Bash
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- We don't name function parameters in the function declaration. Instead we have an implied index of arguments: `$1, $2, $3,...`. When the function is called, the first value after the function name becomes `$1` by default.
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```bash
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function expandRange() {
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declare -a expandedRange=()
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for (( i=$1; i<=$2; i++ )); do
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expandedRange+=($i)
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done
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echo "${expandedRange[@]}"
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}
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```
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```bash
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expandedRange=$(expandRange 1 4)
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echo $expandedRange
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# 1 2 3 4
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```
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