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ibm aix

I'd like to send an email with the content of a text file using mail command in Unix / Linux operating system. How do I do it?
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HowTo: UNIX Set Date and Time Command

I recently noticed that one of my UNIX servers was about 4 hours behind the correct time. I wanted to correct the date and time manually. How do I set date and/or time under UNIX operating systems using command line options?
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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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