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HowTo: Linux Rename Files

How do I rename a file under Linux operating systems using command line (bash shell prompt)?
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Tar Extract a Single File(s) From a Large Tarball

Q. I've couple of large tarballs such as www.tar and images.tar. Is it possible to extract a single file or a list of files from a large tarball such as images.tar instead of extracting the entire tarball? How do I extract specific files under Linux / UNIX operating systems?
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How can I exclude selected packages when I rum yum update command under CentOS / RHEL / Fedora / Red Hat Enterprise Linux server?
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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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