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    1. Labs
    2. VTU THEORY
    3. VTU Sem 3
    4. Unix and Shell Programming syllabus
    5. Module-4 Shell programming
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    Two special files /dev/null and /dev/tty.
    The umask and default file permissions
    The sort command and its usage with different options
    Cut and paste commands
    Head and tail commands
    Filters
    File links – hard and soft links
    File inodes and the inode structure.
    Simple shell program examples
    The here (
    The set and shift commands and handling positional parameters
    for and case control statements
    while
    The if
    The test command and its shortcut
    Logical operators for conditional execution
    exit and exit status of a command
    Command line arguments
    Read and readonly commands
    The profile
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