1. What Unix command can be used to change the access permission of a file ? and how ?

2. Explain how pipe works in Unix. Give one example; Explain how redirect works in Unix and give an example.

3. Explain the structure of Unix file system and how absolute and relative paths work

4. What is UML ? Briefly explain two types of diagrams in UML.

5. Briefly explain two types of testing methods for software development and the major stages in software development cycles

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Changing Access Permission of a File The Unix command used to change access permissions of a file is chmod The chmod command allows you to modify the permissions for a file or directory For example if ... View the full answer