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How to find patterns across multiple lines using grep?
...abc.*(\n|.)*efg' test.txt
where -M, --multiline allow patterns to match more than one line
There is a newer pcre2grep also. Both are provided by the PCRE project.
pcre2grep is available for Mac OS X via Mac Ports as part of port pcre2:
% sudo port install pcre2
and via Homebrew as:
% brew ...
Tools for JPEG optimization? [closed]
...progressive, but that might cause compatibility problems (does anyone know more about that?)
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Count number of lines in a git repository
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xargs will do what you want:
git ls-files | xargs cat | wc -l
But with more information and probably better, you can do:
git ls-files | xargs wc -l
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How do I discover memory usage of my application in Android?
...lly mean that only results in a vague conclusion.)
Note: we now have much more extensive documentation on Managing Your App's Memory that covers much of the material here and is more up-to-date with the state of Android.
First thing is to probably read the last part of this article which has some ...
“elseif” syntax in JavaScript
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@Mark It more shows a misunderstanding of bracketing. Brackets aren't necessary for if/else blocks, but people are encouraged to use them, so I can understand why this looks incorrect to a new user.
– user764357
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Replace all elements of Python NumPy Array that are greater than some value
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When to use static classes in C# [duplicate]
... of code to the consumer is a low cost for laying the foundation of a much more maintainable solution in the future. And finally, if you want to avoid creating instances, simply create a singleton wrapper of your class that allows for easy reuse - although this does make the requirement that your cl...
How to stop mongo DB in one command
...ss using $ top
Kill the process by $ kill <PID> (the Mongo docs have more info on this)
Or on Red Hat based systems:
service mongod stop
Or on Windows if you have installed as a service named MongoDB:
net stop MongoDB
And if not installed as a service (as of Windows 7+) you can run:
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Why are exclamation marks used in Ruby methods?
...rising like raise errors or skip errors. Bangs are used to say this is the more unusual version of the method and I think this should be reflected in your answer since it is marked as correct.
– BookOfGreg
Feb 16 '14 at 15:24
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