I stumbled across this site and while a lot of the content is fairly beginner, it did look well collated and presented, so I'm sure some of you guys might find it useful 
http://www.computerhope.com/unix.htm
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Command line file sharing: https://transfer.sh/
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Shellcheck: Bash/Sh script checker: http://www.shellcheck.net

http://www.computerhope.com/unix.htm
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Command line file sharing: https://transfer.sh/
Code:
# upload $ curl --upload-file ./hello.txt https://transfer.sh/hello.txt https://transfer.sh/66nb8/hello.txt # download $ curl https://transfer.sh/66nb8/hello.txt
Shellcheck: Bash/Sh script checker: http://www.shellcheck.net
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