Linux / Unix: Colored Man Pages With less Command

How do I see colored man pages with standard Unix or Linux less command without installing most paging program for Unix / Linux like operating system?
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Linux / Unix: Find Out What tty I’m Using

What is a tty under Linux / UNIX? How do I find out what tty I’m on?
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Linux / UNIX: Kill User Session

How do I kill all users session under Linux or UNIX operating system using command prompt?
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Debian Linux Delete Directory Command

I am new to Debian Linux and bash shell command line. How do I delete or remove a directory using bash prompt?
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du Command Output In Human Readable Format ( GB / MB / TB )

I need to get a list of sizes in human readable du output format. How do I get the output for du command in GB under Linux or UNIX operating systems?
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HowTo: OpenBSD Mount an NTFS File System

I‘m dual booting my Windows XP system with OpenBSD. How do I mount an NTFS file system under OpenBSD operating systems?
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Linux / UNIX: Convert Epoch Seconds To the Current Time

How do I convert Epoch seconds to the current time under UNIX or Linux operating systems?
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