shigemk2 https://blog.hatena.ne.jp/shigemk2/ by shigemk2 https://www.shigemk2.com/ Linux memo bc 久々の。これはbashだけど。 pi=$(echo "scale=10; 4*a(1)" | bc -l) fishでこんな感じで書いてみよう。 echo (grep "^aaa" test.csv | wc -l) - (grep "^bbb" test.csv | wc -l) | bc 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F2017%2F12%2F12%2Fmemo_bc" title="memo bc - 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 2017-12-12 20:09:11 rich https://www.shigemk2.com/entry/2017/12/12/memo_bc 1.0 100%