unix operating systems

How do I check ksh version? How do I find out ksh version under UNIX like operating systems?

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How can I convert newline [ line break or end-of-line (EOL) character ] between Unix and Windows text files?

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How can I look up IP addresses under UNIX or Linux operating systems using command line options?

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What the differences between a Linux or UNIX software update and an upgrade? How do I perform the both?

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How do I restart the Apache 2 Web Server under Apple OS X UNIX operating systems using bash command prompt?

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How do delete multiple files in bulk (say all *.bak file stored in /netapp/ and its subdirectory) under Linux / UNIX operating systems?

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