shigemk2 https://blog.hatena.ne.jp/shigemk2/ by shigemk2 https://www.shigemk2.com/ bash If this variable is in the environment when Bash starts, the shell enters POSIX mode (see Bash POSIX Mode) before reading the startup files, as if the --posix invocation option had been supplied. bashをposix modeで実行するための変数。 違いについては bashがsh互換(posix)モードで動く時とか http://itdoc.hitachi.co.jp/manuals/3021/302… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F2017%2F11%2F02%2FPOSIXLY_CORRECT" title="POSIXLY_CORRECT - by shigemk2" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2017-11-02 00:08:16 rich https://www.shigemk2.com/entry/2017/11/02/POSIXLY_CORRECT 1.0 100%