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Rubyでターミナルのサイズを取得する

Posted at

コンソールアプリを開発する時に使えるかもです。

`tput lines`
`tput cols`

で取得できます。

サイズの変更をプロセスに通知するシグナルSIGWINCHを使い、サイズの変更を検知する例。

resize = proc do
  p `tput lines`
  p `tput cols`
end

loop do
  Signal.trap(:WINCH, &resize)
end

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