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How do I figure out which file system a given file/directory is located on?

(For example, I would like to know if the file/directory is a temporary file in RAM, or if it's stored on disk. And what mount point it corresponds to, if any. Etc.)

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2 Answers

up vote 7 down vote accepted

df <path> should do what you want on nearly all systems. It displays the file system and the mount point, along with the space usage statistics.

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Just run the command mount or cat /etc/mtab.

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