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    1. Labs
    2. VTU THEORY
    3. VTU Sem 3
    4. Unix and Shell Programming syllabus
    5. Module-2 Unix files
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    Directory permissions.
    Recursively changing file permissions
    Changing file permissions: the relative and absolute permissions changing methods
    The ls command with options
    File attributes and permissions and knowing them
    File related commands – cat, mv, rm, cp, wc and od commands.
    and double dots (..) notations to represent present and parent directories and their usage in relative path names.
    The dot (.)
    Directory commands – pwd, cd, mkdir, rmdir commands
    Relative and absolute pathnames.
    manipulating the PATH
    Reaching required files- the PATH variable
    The home directory and the HOME variable
    Parent child relationship
    Standard directories
    Standard directories
    Hidden files
    Organization of files
    Basic file types/categories
    Naming files
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