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CompTIA Linux+ 勉強メモ

Posted at

疑問点

2>
ddコマンド

System Management

・/dev/null
「無」を意味するファイル。「hoge.sh < /dev/null」で入力に使えば引き数なしで実行という意味だし、「hoge.sh > /dev/null」なら実行結果は破棄(=出力しない)という意味になる
https://wa3.i-3-i.info/word11733.html

・/dev/zero
null文字が入ってるファイル。容量ありでファイルの中身を黒塗りしたいときに使うもの?
https://wa3.i-3-i.info/word11744.html
https://qiita.com/umeee/items/4e6b9ef349a0ed291644

・/dev/uramdom

Security

Scripting, Containers, and Automation

Troubleshooting

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