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Itc333   week 3
 

Itc333 week 3

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    Itc333   week 3 Itc333 week 3 Presentation Transcript

    • Week 3The File System
    • ž 6.0 Introž 6.1 Pathnamesž 6.2 Mounting and unmountingž 6.3 Organisation
    • In Unix, anything that exists,including nothing,is in the file system
    • Of course, there are files anddirectories. But there arealso representations of allsorts of objects.
    • Namespace API filesystemSecurity model Implementation
    • A Linux/Unix kernel maysupport several filesystemimplementations:•  Ext3•  Ext4•  ZFS•  VxFS•  ReiserFS•  JFS•  Btrfs•  etc
    • Everything starts at /.The root.
    • /tmp/foo is an absolute pathname.tmp/food is a relative pathname.
    • Spaces are ok.Just use “ or to preservespaces.
    • mount /dev/sda4 /usersunmount -l /users
    • No single structure ornaming conventions, greatvariety between Linux andUnix distributions.
    • /bin Core OS commands/boot Kernel and files for booting/dev Devices/etc Startup and configuration/home User home directories/lib Libraries, shared libraries, C compiler