linuxのディレクトリについて知りたい場合はman hierコマンドが便利

ある日、仕事中にチャットで「/var ディレクトリってvariableなデータを格納しているから/varって言うらしいね。知らなかったよ～」とつぶやいたら、同僚から「ちなみにlinuxのディレクトリについて知りたい場合はman hierで分かるよ」と教えてもらった。

目から鱗で感動したので、メモっておく。

man hier

NAME
       hier - description of the filesystem hierarchy

DESCRIPTION
       A typical Linux system has, among others, the following directories:

       /      This is the root directory.  This is where the whole tree starts.

       /bin   This directory contains executable programs which are needed in single user mode and to bring the system up or repair it.

       /boot  Contains  static  files  for the boot loader.  This directory holds only the files which are needed during the boot process.  The
              map installer and configuration files should go to /sbin and /etc.  The operating system kernel (initrd for example) must be  lo‐
              cated in either / or /boot.

       /dev   Special or device files, which refer to physical devices.  See mknod(1).

ちなみに以下は/varディレクトリの解説。

/var   This directory contains files which may change in size, such as spool and log files.