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@ymko(ymko diary)

高速に巨大なダミーファイルを作成する方法

Last updated at Posted at 2015-04-21

もうdd if=/dev/zero ...とかしなくてええんやで？

$ fallocate -l 10GB dummy.dat

参考

command line - How to create a file with a given size in Linux? - Stack Overflow
http://stackoverflow.com/questions/139261/how-to-create-a-file-with-a-given-size-in-linux
fallocate -l 5G bar

fallocateで素早く仮想化ディスクを用意する | Linux | マイノリティでいこう
http://blog.be-dama.com/2013/03/01/fallocate%E3%81%A7%E7%B4%A0%E6%97%A9%E3%81%8F%E4%BB%AE%E6%83%B3%E5%8C%96%E7%94%A8%E3%81%AE%E3%83%87%E3%82%A3%E3%82%B9%E3%82%AF%E3%82%92%E7%94%A8%E6%84%8F%E3%81%99%E3%82%8B/

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