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How to determine SSL cert expiration date from a PEM encoded certificate?
If I have the actual file and a Bash shell in Mac or Linux, how can I query the cert file for when it will expire? Not a web site, but actually the certificate file itself, assuming I have the csr, key, pem and chain files.
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How do I restart nginx only after the configuration test was successful on Ubuntu?
...on a command line on an Ubuntu server, the service crashes when a nginx configuration file has errors. On a multi-site server this puts down all the sites, even the ones without configuration errors.
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How to upload a file to directory in S3 bucket using boto
I want to copy a file in s3 bucket using python.
13 Answers
13
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How to open every file in a folder?
I have a python script parse.py, which in the script open a file, say file1, and then do something maybe print out the total number of characters.
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How do I make Git use the editor of my choice for commits?
I would prefer to write my commit messages in Vim, but it is opening them in Emacs.
26 Answers
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How to center a subview of UIView
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Objective-C
yourSubView.center = CGPointMake(yourView.frame.size.width / 2,
yourView.frame.size.height / 2);
Swift
yourSubView.center = CGPoint(x: yourView.frame.size.width / 2,
y: yourView.frame.size.height / 2...
Abusing the algebra of algebraic data types - why does this work?
The 'algebraic' expression for algebraic data types looks very suggestive to someone with a background in mathematics. Let me try to explain what I mean.
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Comparison of C++ unit test frameworks [closed]
I know there are already a few questions regarding recommendations for C++ unit test frameworks, but all the answers did not help as they just recommend one of the frameworks but do not provide any information about a (feature) comparison.
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What is memoization and how can I use it in Python?
... no idea what memoization is and how to use it. Also, may I have a simplified example?
13 Answers
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How do I extract a sub-hash from a hash?
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If you specifically want the method to return the extracted elements but h1 to remain the same:
h1 = {:a => :A, :b => :B, :c => :C, :d => :D}
h2 = h1.select {|key, value| [:b, :d, :e, :f].include?(key) } # => {...