Described at
The true utility has been retained in this volume of POSIX.1-2017, even though the shell special built-in : provides similar functionality, because true is widely used in historical scripts and is less cryptic to novice script readers. IEEE Std 1003.1-2001/Cor 1-2002, item XCU/TC1/D6/39 is applied, replacing the terms None'' and Default'' from the STDERR and EXIT STATUS sections, respectively, with terms as defined in Utility Description Defaults .
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- true and false
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- described at URL
- pubs.opengroup.org/onlinepubs/9699919799/utilities/true.html
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Article · 日本語
Unix系のオペレーティングシステムにおいて、true（トゥルー）とは常に終了コード0を返すだけのコマンドである。シェルによって論理値の真と解釈される。
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