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(今更)稼働中の Linux が 32ビット版か 64bit 版かを確認する方法

Last updated at Posted at 2018-06-29

一般的に、タイトルを実現する方法としてよく知られている方法は

[hoge@fuga ~]$ uname -m
x86_64

上記コマンドの結果が x86_64 か i686 かどうかで 64bit版か 32bit版かがわかる、というものである・・・が、
64bit VMWare 鯖上の 32bit 仮想マシンで上記コマンドを実行しても
x86_64 が返ってくるんですよ・・・

ということで

[hoge@fuga ~]$ getconf LONG_BIT
64

こっちが正解。戻り値が文字列ではなく数値という点もでかいし、RaspberryPI でも使える。

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