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How to find patterns across multiple lines using grep?

I want to find files that have "abc" AND "efg" in that order, and those two strings are on different lines in that file. Eg: a file with content: ...
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Alarm Manager Example

... until the phone turns off. Add to Manifest.xml: ... <uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission> ... <receiver android:process=":remote" android:name=".Alarm"></receiver> ... Code in your class: package yourPackage; import android.app....
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read subprocess stdout line by line

...ility that is very noisy. I want to store all of the output to a log file and show some of it to the user. I thought the following would work, but the output doesn't show up in my application until the utility has produced a significant amount of output. ...
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Allowed characters in Linux environment variable names

...llowed in Linux environment variable names? My cursory search of man pages and the web did only produce information about how to work with variables, but not which names are allowed. ...
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Count number of lines in a git repository

...at 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 share | improve this answer | follow ...
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Get the IP address of the machine

...) will let you do the same thing easily, it works fine for me on os x 10.5 and should be the same below. I've done a quick example below which will print all of the machine's IPv4 address, (you should also check the getifaddrs was successful ie returns 0). I've updated it show IPv6 addresses too. ...
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Proper use cases for Android UserManager.isUserAGoat()?

I was looking at the new APIs introduced in Android 4.2 . While looking at the UserManager class I came across the following method: ...
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Fast check for NaN in NumPy

... to get slower as NaNs get closer to the start of the array. On the other hand, sum's throughput seems constant regardless of whether there are NaNs and where they're located: In [40]: x = np.random.rand(100000) In [41]: %timeit np.isnan(np.min(x)) 10000 loops, best of 3: 153 us per loop In [42]:...
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Apache Spark: The number of cores vs. the number of executors

I'm trying to understand the relationship of the number of cores and the number of executors when running a Spark job on YARN. ...
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How to change to an older version of Node.js

... One way is to use NVM, the Node Version Manager. Use following command to get nvm curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.34.0/install.sh | bash You can find it at https://github.com/creationix/nvm It allows you to easily install and manage multiple versions of node...