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How to check if running as root in a bash script
...by using the root username. Nothing guarantees that the user with ID 0 is called root. It's a very strong convention that is broadly followed but anybody could rename the superuser another name.
I think the best way when using bash is to use $EUID, from the man page:
EUID Expands to the effectiv...
When is it appropriate to use UDP instead of TCP? [closed]
...my favorite questions. UDP is so misunderstood.
In situations where you really want to get a simple answer to another server quickly, UDP works best. In general, you want the answer to be in one response packet, and you are prepared to implement your own protocol for reliability or to resend. DNS i...
How to calculate the number of days between two dates? [duplicate]
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Warning: not all days are 24 hours long. If your date range spans a daylight saving change, you'll lose or gain an hour (typically). Use Math.round() on the result (avoid floor or ceil).
– Mark
Sep 2...
What is the difference between @Inject and @Autowired in Spring Framework? Which one to use under wh
...utowired is Spring's own annotation. @Inject is part of a Java technology called CDI that defines a standard for dependency injection similar to Spring. In a Spring application, the two annotations works the same way as Spring has decided to support some JSR-299 annotations in addition to their own....
Improve subplot size/spacing with many subplots in matplotlib
... plt.subplots_adjust to change the spacing between the subplots (source)
call signature:
subplots_adjust(left=None, bottom=None, right=None, top=None, wspace=None, hspace=None)
The parameter meanings (and suggested defaults) are:
left = 0.125 # the left side of the subplots of the figure
ri...
How to make a whole 'div' clickable in html and css without JavaScript? [duplicate]
...a element is now transparent; that is, an instance of the a element is now allowed to also contain flow content". dev.w3.org/html5/markup/a.html#a-changes
– Damien
Jan 3 '13 at 9:25
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Are class names in CSS selectors case sensitive?
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CSS selectors are generally case-insensitive; this includes class and ID selectors.
But HTML class names are case-sensitive (see the attribute definition), and that's causing a mismatch in your second example. This has not changed in HTML5.1
This...
Gson ignoring map entries with value=null
How do I get it to include all entries?
1 Answer
1
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How costly is .NET reflection?
I constantly hear how bad reflection is to use. While I generally avoid reflection and rarely find situations where it is impossible to solve my problem without it, I was wondering...
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What is InputStream & Output Stream? Why and when do we use them?
...whether the stream is a file, a web page, or the screen shouldn't matter. All that matters is that you receive information from the stream (or send information into that stream.)
InputStream is used for many things that you read from.
OutputStream is used for many things that you write to.
Here'...