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I've three old hard drives: sized 60, 60 and 120 GB. And 200 GB of video files, which I need to store on these drives. How would I store all my files on three hard drive without split a file into pieces or creating RAID array? How can I combines a several mount points (partitions) into the single one on a Linux operating systems?
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How do I find out my public IP address on the Linux and OS X Unix command line to use with my own bash shell script without using third party web site? Is there command-line option which will show my dynamic IP address on a Ubuntu or Fedora Linux?
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How can I use dd command on a Linux to test I/O performance of my hard disk drive? How do I check the performance of a hard drive including the read and write speed on a Linux operating systems?
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How To: Ubuntu Linux Firewall Open Port Command

How do I open port 80 and 443 on a Ubuntu Linux LTS version 14.04 server?
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FreeBSD Add a User To Wheel Group Command

How do I add a user to the wheel group in FreeBSD unix operating systems using command line options?
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How to execute script on the last day of a month on Linux or Unix bash shell? How do I run a disk usage or custom reporting shell/perl/python script on the last day of a month on a Linux or Unix-like systems?
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I'm a bash shell user. I would like to temporarily clear bash shell environment variables. I do not want to delete or unset an exported environment variable. How do I run a program in a temporary environment in bash or ksh shell?
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