unix operating system

How do I find Unix version and release number using command line options? What version, release, and maintenance level of Unix is running on my system?

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One of the most common ways for hackers to break into a Solaris system is to exploit buffer overflows. How do I turn on buffer overflow protection under Solaris UNIX operating system just like CentOS/Redhat Linux system?

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Question: I know how to boot into single user mode under Linux and FreeBSD. But, how do I boot into single user mode under HP-UX (HP9000) UNIX operating system?

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My programs and scripts needs a real path and not a a symbolic link. How to I determine a real path of any directory under Linux / UNIX like operating systems? How do I remove references to /./, /../ and extra ‘/’ character in path?

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Q. How do I view active connections with PF firewall under FreeBSD / OpenBSD UNIX operating system?

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How do I print line numbers on the printer for my c / java / c++ code written using vi or vim text editor under Linux / UNIX like operating system?

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I’ve download ed .tbz file. How do I open .tbz file under Linux / UNIX operating system using a shell prompt or GUI application?

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