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answered Local DNS using Bind9
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revised How to analyse disk usage in command line linux?
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answered How do I refresh directory in BASH?
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comment Configure a SPF rule on Ubuntu
@noloader Link moved; fixed.
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revised Configure a SPF rule on Ubuntu
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answered How do I find info about “sticky bits” from within Linux without having to use Google?
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comment What's the importance of / in the following Linux command
"To move to a directory, you must specify the trailing /". No you don't. It is simply a safety trick in case the directory does not exist, which works since "dest/" is (as I write in my answer below) equivalent to "dest/.", which will be an invalid path if "dest" is not a directory. The slash it not needed.
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revised Security Warning: The Server you are connected to is using a security certificate that cannot be verified. The Target principal name is incorrect
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