February 2014
Intermediate to advanced
248 pages
4h 23m
Japanese
Content preview from 実践 Vagrant
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131
7.6 新しい設定オプションの追加
command = "grep MemFree /proc/meminfo | awk '{print $2}'"
with_target_vms(argv) do |machine|
if machine.state.id != :running
@env.ui.info("#{machine.name} is not running.")
next
end
machine.communicate.execute(command) do |type, data|
@env.ui.info(data)
end
end
変更されているのは、
parse_options
までのセクションが追加され、
@argv
が
argv
に置き換えられていることです。ここからわかる通り、使っているのは普通の
OptionParser
に過ぎません。ここでは何も特別なことはしていません。
parse_options
は
OptionParser
を引数に取り、そのルールに従ってコマンド引
数をパースします。そして、残りの位置指定の引数が返されます。これが、
with_
target_vms
に
argv
を渡し直している理由です。
これは、単に普通の
OptionParser
を使って行っていることなので、コマンドのオ
プションのパースと設定を行うに当たって、このインスタンスは好きに使うことがで
きます。
7.6
新しい設定オプションの追加
プラグインを使えば、
Vagrantfile
に新しい設定セクションを書けるようにするこ ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.