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Google Authenticator implementation in Python

...m/tadeck/onetimepass). import hmac, base64, struct, hashlib, time def get_hotp_token(secret, intervals_no): key = base64.b32decode(secret, True) msg = struct.pack(">Q", intervals_no) h = hmac.new(key, msg, hashlib.sha1).digest() o = ord(h[19]) & 15 h = (struct.unpack("&g...
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How does '20 seconds' work in Scala?

... There are a few things going on. First, Scala allows dots and parens to be omitted from many method calls, so 20 seconds is equivalent to 20.seconds()*. Second, an "implicit conversion" is applied. Since 20 is an Int and Int has no seconds method, the compiler searches ...
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Difference between ProcessBuilder and Runtime.exec()

...sn't work: List<String> params = java.util.Arrays.asList(installation_path+uninstall_path+uninstall_command, uninstall_arguments); Process qq=new ProcessBuilder(params).start(); – gal Jul 28 '11 at 9:50 ...
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How to create directories recursively in ruby?

...c/d.txt, but I do not know if any of these directories exist". My solution allows to use the existing file path ('/a/b/c/d.txt'), and, without separate parsing, create all the folders. – Vadym Tyemirov Oct 9 '19 at 4:47 ...
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How do I sort an array of hashes by a value in the hash?

... Actually, Array#sort_by! is new in Ruby 1.9.2. Available today to all Ruby version by requiring my backports gem too :-) – Marc-André Lafortune Jul 1 '10 at 4:19 ...
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Design patterns or best practices for shell scripts [closed]

...first suggestion is "don't". The reason is that is fairly easy to make a small mistake that hinders your script, or even make it dangerous. That said, I don't have other resources to pass you but my personal experience. Here is what I normally do, which is overkill, but tends to be solid, although...
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How do I use installed packages in PyCharm?

...you use the os (ex. apt-get), or pip in a virtualenv, packages will be installed to a location already on the path. In your example, GNU Radio is installed to the system Python 2's standard site-packages location, which is already in the path. Pointing PyCharm at the correct interpreter is enough;...
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What does passport.session() middleware do?

...r/lib/strategies/session.js Specifically lines 59-60: var property = req._passport.instance._userProperty || 'user'; req[property] = user; Where it essentially acts as a middleware and alters the value of the 'user' property in the req object to contain the deserialized identity of the user. To ...
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Use of the MANIFEST.MF file in Java

...1.0 of the Java Development Kit is the following. Manifest-Version: 1.0 All the entries are as name-value pairs. The name of a header is separated from its value by a colon. The default manifest shows that it conforms to version 1.0 of the manifest specification. The manifest can also contain inf...
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SVN encrypted password store

I installed SVN on a Ubuntu machine and I can't get my head around something. 3 Answers ...