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#チルダ(~)って何を表すの?

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チルダ(~)はユーザのホームディレクトリを指す。

試しにターミナルを開いて以下のコマンドを実行すると

~/に移動
4dusers$ cd ~/
4dusers$ pwd
/Users/4dusers
/に移動
4dusers$ cd /
4dusers$ pwd
/

~/はユーザのホームディレクトリを指し
/はルートディレクトリを指しているのですね。

余談ですが、なぜUnix&Linuxでチルダがホームディレクトリを表現するのか、というのは昔のキーボードのレイアウトが関係あるそうです。
http://www.aivy.co.jp/BLOG_TEST/nagasawa/c/2013/01/unixlinux.html

そう言えばhjklの位置に矢印がついてるキーボードが昔あったような。

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