shokai https://blog.hatena.ne.jp/shokai/ 橋本詳解 https://shokai.hatenadiary.org/ Ruby 90度回転させる ruby imgrotate.rb ~/tmp/picture/*.png ~/tmp/result/ 90imgrotate.rb #!/usr/bin/env ruby require 'rubygems' require 'RMagick' include Magick if ARGV.size < 3 puts 'pathと保存先と角度が必要です' puts ' e.g. ruby imgrotate.rb ~/tmp/picture/*.png ~/tmp/result/ 180' exit(1) end angle = ARGV.pop.to_i # 回転角度 d… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fshokai.hatenadiary.org%2Fentry%2F20091009%2F1255059647" title="ディレクトリ下の画像の一括回転 - 橋本詳解" 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 2009-10-09 12:40:47 rich https://shokai.hatenadiary.org/entry/20091009/1255059647 1.0 100%