anmino https://blog.hatena.ne.jp/anmino/ あんみのの備忘録 https://anmino.hatenadiary.org/ UNIX/Linux #!/bin/sh #var_error.sh yourname="anmino" echo "Good evening, ${yourname:?Please edit var_error.sh}" yourname="" echo "Good evening, ${yourname:?Please edit var_error.sh}" $ ./var_error.sh Good evening, anmino ./var_error.sh: line 8: yourname: Please edit var_error.sh 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fanmino.hatenadiary.org%2Fentry%2F20091012%2F1255303663" title="変数が空の場合エラーメッセージを表示して終了する - あんみのの備忘録" 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 2009-10-12 08:27:43 rich https://anmino.hatenadiary.org/entry/20091012/1255303663 1.0 100%