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linux command

I'm a new Linux user. How do I copy a directory or folder under Linux operating system using command line options and bash shell?
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I would like to move a directory one level up into the root directory. I've all html files located in /home/apache2/www/html directory, and I'd like to move /home/apache2/www/html to one level up at /home/apache2/www/. How can I accomplish this over the ssh session?
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Linux Command: Show Linux Version

What command I need to type to display Linux kernel version and other information such as Linux distribution name? How do I check Linux kernel version number?
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How do I ignore bash shell aliases or functions when running a command without removing alias or function from memory or current shell session on a Linux or Unix-like systems?
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Q. I'm not able to run tracepath or tracepath6 under Debian Linux. tracepath is default under CentOS Linux. How do I install tracepath command under Debian Linux 4.x server? How do I find out what package owns the command under Debian / Ubuntu Linux?
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Unix Create a Symbolic Link

How do I create a symbolic links under Linux or Unix like operating systems using command line options?
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How do I find a Unix / Linux command?

Q. How do I find UNIX / Linux command for particular task?
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