MCQs Computer Systems Analyst

By: Prof. Dr. Fazal Rehman | Last updated: May 30, 2025

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1. : Use of what is recommended by POSIX instead of archaic command for command substitution?





2. : Using $ as recommended by POSIX, which shell doesn’t support the command substitution?





3. : By using what can a variable be removed?





4. : When we evaluate the following statement, what will be the result?





5. : Which command is used by C shell to assign the values to variables?





6. : What is not a system-defined variable?





7. : An invalid variable is ____





8. : The command substitution requires the command to use what?





9. : To assign the value to the variables, which symbol do we use?





10. : For the evaluation of variables, which symbol do we use?





11. : What is the correct initialization of variables to null strings?





12. : One or more arguments to be obtained from the standard output of another command enabled by Shell. What is this feature called?





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