What does $? Mean in unix?
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How to stop an infinite loop in unix?
Give a brief idea about representation of devices in unix.
Define a single-user system.
What is architecture of unix operating system?
How to display the contents of a file?
What is a "parameter card" and what is useful for?
What are special characters in unix?
What are the three major components of any unix system?
How to copy files from one directory to other in unix?
What do you understand by the term single user system?
Explain how do we change file access permissions?
Describe the term directory?