What does $? Mean in unix?
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What is the architecture of unix operating system?
What are the four components of the unix file system?
Is unix a language?
how to kernel protected memory?
How to print/display the first line of a file in Unix?
Name the key features of the korn shell.
Who owns unix?
How do I delete files older than 2 days unix?
What are the components of unix kernel?
Explain about the directory representation in UNIX?
Explain piping.
What is unix operating system and its features?