How can you get/set an environment variable from a program?
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Is unix portable?
Which file system is used in unix?
Is windows a unix operating system?
How do you delete a file in unix?
Who is founder of unix?
Explain superblock in unix.
Which data structure is used to maintain the file identification?
What is RC (return code)? What is useful for? Which are the common values?
Difference between the fork() and vfork() system call?
Explain the term filter.
Is it possible to create new a file system in UNIX?
What is the difference between a shell variable that is exported and the one that is not exported?