What are the differences among a system call, a library function, and a unix command?
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What is the use of sed command in unix?
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Explain the terms ‘system calls’ and ‘library functions’ with respect to unix commands?
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What is a shell in Unix? Name some common Unix shells.
What is “chmod” command?
in unix echo is used for
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what is mount ,tell me about mount ,how can u use in real time project??
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In UNIX, what is the command to edit contents of the file?
What is awk good for?