CS131 - Week 4 (Hard)
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Questions and Answers

Which of the following is true about the UNIX file system hierarchy?

  • The dot-dot is the same as dot in the root directory. (correct)
  • The dot refers to the parent directory.
  • The dot-dot refers to the current directory.
  • The root directory is named dot-dot.

    • What is the purpose of the command 'mkdir' in the UNIX file system?

  • To list all files and directories in a directory.
  • To delete a directory.
  • To move to a different directory.
  • To create a new directory. (correct)

    • What does the command 'ls -a' do in the UNIX file system?

  • Lists all files and directories in the current directory, including hidden files. (correct)
  • Lists all files in the current directory.
  • Lists all files and directories in the current directory, excluding hidden files.
  • Lists all directories in the current directory.

    • Which character represents the root directory in UNIX-like OSs?

    <p>/</p> Signup and view all the answers

    Which of the following is true about filenames in UNIX?

    <p>Filenames are case-sensitive.</p> Signup and view all the answers

    What is the purpose of a directory file in UNIX?

    <p>A directory containing details of the files and subdirectories it contains.</p> Signup and view all the answers

    What information does an inode store for a file in UNIX?

    <p>File type, size, permissions, modification time, etc.</p> Signup and view all the answers

    Which of the following permissions will the command 'chmod 755' set?

    <p>rwx for owner, rx for group and others</p> Signup and view all the answers

    Which of the following permissions will the command 'chmod 700' set?

    <p>rwx for owner, no permissions for group and others</p> Signup and view all the answers

    What is the purpose of using wildcards in Linux?

    <p>To match filenames based on a specific pattern within a single directory</p> Signup and view all the answers

    What is the purpose of the 'find' command in Linux?

    <p>To search for files and directories across the entire filesystem or within a specified directory, including subdirectories</p> Signup and view all the answers

    Which of the following is true about UNIX file systems?

    <p>File data is stored separately from the file name.</p> Signup and view all the answers

    Which command is used to create a new directory in UNIX?

    <p>mkdir</p> Signup and view all the answers

    What happens when you try to remove a non-empty directory using the rmdir command in UNIX?

    <p>The <code>rmdir</code> command fails and the directory is not removed.</p> Signup and view all the answers

    What is the most common file type on a UNIX file system?

    <p>Ordinary (data) file</p> Signup and view all the answers

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