Is ‘du’ a command? If so, what is its use?
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What is the basic difference between unix and windows operating systems?
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what is the difference between SED and GREP ? Which one is more better and why?
which script will invoke first ,when /etc/init.d starts
What do chown command do?
their is a file1,file2 and i want to append file1 data to file2?
Can a process kill itself in UNIX/or in its various versions?
What does the metacharacter mean?
what is the functionality of kernel in unix architecture?
How do you find out all processes that are currently running in UNIX OS?
Explain mount and unmount command.
What UNIX command will control the default file permissions when files are created?
distinguish between interrupts and exceptions?