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Sorting multiple keys with Unix sort
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Use the -k option (or --key=POS1[,POS2]). It can appear multiple times and each key can have global options (such as n for numeric sort)
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What are some resources for getting started in operating system development? [closed]
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28 Answers
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echo that outputs to stderr
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You could do this, which facilitates reading:
>&2 echo "error"
>&2 copies file descriptor #2 to file descriptor #1. Therefore, after this redirection is performed, both file descriptors will refer to the same file: the one file descriptor #2 was originally referri...
Can I have onScrollListener for a ScrollView?
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Every instance of View calls getViewTreeObserver(). Now when holding an instance of ViewTreeObse...
In Python, what is the difference between “.append()” and “+= []”?
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Get battery level and state in Android
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Here is a code sample that explains how to get battery information.
To sum it up, a broadcast ...
How can we match a^n b^n with Java regex?
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Lesson: You can use patterns in lookarounds to make assertions.
Step 2: Capturing in a lookahead (and f r e e - s p a c i n g mode)
Now let's say that even though we don't want the b+ to be part of the match, we do want to capture it anyway into group 1. Also, as we anticipate having a more co...
Find unused npm packages in package.json
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You can use an npm module called depcheck (requires at least version 10 of Node).
Install th...
Android: TextView: Remove spacing and padding on top and bottom
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Matplotlib 2 Subplots, 1 Colorbar
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Just place the colorbar in its own axis and use subplots_adjust to make room for it.
As a quic...