shammer https://blog.hatena.ne.jp/shammer/ Shammer's Philosophy https://shammerism.hatenadiary.com/ ShellScript Debian I understood that SHELL value OSTYPE returns the platform indicating current operating system. Then, I used this in my shell script but $OSTYPE always blank in my shell script even if $OSTYPE has a not blank value in Terminal. My script includes like following case sentences but it doesn't work I ex… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fshammerism.hatenadiary.com%2Fentry%2F20170227%2Fp1" title="${OSTYPE} returns blank - Shammer&#39;s Philosophy" 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 2017-02-27 00:00:00 rich https://shammerism.hatenadiary.com/entry/20170227/p1 1.0 100%