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When to use the different log levels
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error:
Error conditions [but not critical].
"Premature end of script headers"
warn:
Warning conditions. [close to error, but not error]
notice:
Normal but significant [notable] condition.
"httpd: caught SIGBUS, attempting to dump core in ..."
info:
Informat...
How to generate an openSSL key using a passphrase from the command line?
...n 3072
You can also used a named pipe with the file: option, or a file descriptor.
To then obtain the matching public key, you need to use openssl rsa, supplying the same passphrase with the -passin parameter as was used to encrypt the private key:
openssl rsa -passin file:passphrase.txt -pubo...
What is Turing Complete?
...n it's Turing complete.
Most modern programming languages (e.g. Java, JavaScript, Perl, etc.) are all Turing complete because they each implement all the features required to run programs like addition, multiplication, if-else condition, return statements, ways to store/retrieve/erase data and so o...
Is there a way of having git show lines added, lines changed and lines removed?
...niq -c
It's a little long-winded so you may want to parse it in your own script instead.
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How to show and update echo on same line
...d OS, while echo can sometimes behave very differently. For cross-platform scripts (or if you think you may ever care about that), using printf is best-practice.
– William T Froggard
Apr 8 '16 at 15:49
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Why does Maven have such a bad rep? [closed]
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they expect a short, sound-bite answer. “Well it is a build tool or a scripting framework” Maven is more
than three boring, uninspiring words. It is a combination of ideas, standards, and software, and it is
impossible to distill the definition of Maven to simply digested sound-bites. Rev...
Why wasn't PyPy included in standard Python?
...efore PyPy isn't necessarily as efficient for running glue code or trivial scripts.
PyPy and CPython behavior is not identical in all respects, especially when it comes to "implementation details" (behavior that is not specified by the language but is still important at a practical level).
CPython r...
Managing CSS Explosion
...ase.css
somepage.css
someotherpage.css
some_abstract_component.css
Use a script to combine them into one; if necessary. You can even have a nice directory structure as well, and just have your script recursively scan for .css files.
If you must write headings, have a TOC at the start of the file ...
How to get all child inputs of a div element (jQuery)
... I mean, "all together" with just that selector. ":input selector Description: Selects all input, textarea, select and button elements." Didn't know about it, I will use it from now on :)
– Yuri
Sep 18 '15 at 17:36
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Cartesian product of multiple arrays in JavaScript
How would you implement the Cartesian product of multiple arrays in JavaScript?
30 Answers
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