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Somewhere around 2014 I found an /etc/passwd file in some dumps of the BSD 3 source tree, containing passwords of all the old timers such as Dennis Ritchie, Ken Thompson, Brian W. Kernighan, Steve Bourne and Bill Joy. Since the DES-based crypt(3) algorithm used for these hashes is well known to be weak (and limited to at most 8 characters), I thought it would be an easy target to just crack these
Time for a new instance of your favorite installment of this blog! You probably know M-. to insert the last argument of the previous line. Sometimes, you want to insert a different argument. There are a few options: Use history expansion, e.g. !:-2 for the third word on the line before (use TAB to expand it if you are not sure), or use M-. with a prefix argument: M-2 M-. Much nicer however is: aut
Do you read the manpages of tools you use everyday? You should. For example, just yesterday, I found this gem in the sudo manpage: ... for some reason, sudo is unable to update a file with its edited version, the user will receive a warning and the edited copy will remain in a temporary file. -f Force execution of the command, even if the user doesn't fulfill the sudoers policy. This is useful for
Since I recently ordered a HTC G1 smartphone that runs Android, I wanted to be able to code for it as well. But since I’m a bit allergic to Java, I decided to figure out how to use the nice language Scala on it. This turned out not to be very hard, but it was frustrating enough that I shall explain how I think to best do it. (Please notice that I don’t really know Java, barely know Scala, had no c
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Dabbling in my own web framework experiments, I noticed that there is a lot of code duplication among frameworks since they essentially all do the same things. And still, every Ruby web framework developer is writing his own handlers for every webserver he wants to use. Hopefully, the framework users are satisfied with that choice. However, in essence, dealing with HTTP is rather easy. In the end,
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