Linux core offers support for a large number of file systems. User interface provided is the same no matter the type of file system back. Generally different file names and directories are simple to be used efficiently in command line such as  bin/, var/, usr/, lib. Mac Os uses more clear names
such as /library/, /Applications/, /Users/. Most of Linux distributions offers compatible interface with Filesystem Hierarchy Standard 3. FHS defines the main directories names and the content of it in a Linux distribution such as :

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Directory                                                     Description

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/ bin /                           binary commands associated with significant executable

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/ dev /                          dev / null , dev / hda , dev / random  devices

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/ etc /                           configurations files

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/home/                         home users directories

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/ lib /                            libraries

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/ mnt /                          temporary system files

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/ proc /                         file system procfs

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/ root /                          users home ( root )

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/ sbin /                         executable commands that requires privileged user rights

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/ usr /                           secondary hierarchy : contains binaries and libraries

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/ var /                           variable files (logs, queues, temporary)