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@nazoking@githubin

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bash 変数展開

Bash

Last updated at 2021-06-18Posted at 2021-05-21

毎回ググるのでまとめる

最初の検索文字列で分割したい
- 前 ${v%%=*} ( aa=bb=cc を aa に )
- 後 ${v#*=} ( aa=bb=cc を bb=cc に )
変数があるときにだけオプション指定
- ${opt:- --option="$opt" }

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