test2review - CST8207 LINUX OPERATING SYSTEM I TEST#2...

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Page 1 of 3 CST8207 LINUX OPERATING SYSTEM I TEST#2 REVIEW When : Monday April 7, 2008 Where: Room T119 Format: 45 minutes, 40 multiple choice questions All Multiple Choices to be filled out on Scantron cards Important: BRING A PENCIL AND ERASER!! Weight: 20% of final grade What to study : labs (lab 6 , lab7, and the first part of lab8 ), lecture notes (#8 to #14), quizzes (#3 and #4), and this review document Review Questions 1. Understand the three basic access permissions in Linux: r w x What are their meanings to files and directories? How does Linux use 9 digits to represent the file permissions for different user and groups: owner, group, others ( u, g, o ) 2. File permission notations: symbolic mode and octal mode Know how to do conversions between the two modes 3. Change file permissions using chmod command: Symbolic mode and octal mode 4. Default file permissions for directories: 777-umask for files: 666-umask How to display and change umask value 5. Display and change file and group ownership: ls –l , chown, chgrp 6. Minimum permissions needed to perform copy, delete and move
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test2review - CST8207 LINUX OPERATING SYSTEM I TEST#2...

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