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How to leave/exit/deactivate a Python virtualenv
I'm using virtualenv and the virtualenvwrapper. I can switch between virtualenv's just fine using the workon command.
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How to use sed to remove the last n lines of a file
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+1 for simplicity. The equivalent sed command is butt ugly: sed -e :a -e '$d;N;2,5ba' -e 'P;D' file (,5 for last 5 lines).
– Marc B
Nov 14 '12 at 14:28
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Is there an expression for an infinite generator?
...entinel. However, as int() will always return 0, we can call int() forever and never reach 1. This will in effect produce an infinite list of 0's
– Olsgaard
Apr 14 at 8:47
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Running V8 Javascript Engine Standalone
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V8 is easy to build and does not come with the Java VM overhead from Mozilla's standalone Javascript interpreter. Luckily, V8 ships with code for building a console. Here is how to build this:
$> svn co http://v8.googlecode.com/svn/trunk v8...
Automatic exit from bash shell script on error [duplicate]
I've been writing some shell script and I would find it useful if there was the ability to halt the execution of said shell script if any of the commands failed. See below for an example:
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Class JavaLaunchHelper is implemented in both … libinstrument.dylib. One of the two will be used. Wh
I upgraded to the latest Java 7u40 on MacOS X and started getting the following message on the console when launching my application using Eclipse. The app works fine but I would like to find out the cause of the problem and hopefully a fix for it.
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Android Studio: how to remove/update the “Created by” comment added to all new classes?
By default Android Studio automatically adds a header comment to all new classes, e.g.
9 Answers
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GitHub: Permission denied (publickey). fatal: The remote end hung up unexpectedly
...rmission ( /home/user/git) it will work fine.
(Explanation: Running a command as superuser will not work with the same public key as running a command as user. Therefore Github refused the connection.)
This solution requires a SSH key already to be set up: https://help.github.com/articles/generat...
Unable to resolve host “” No address associated with hostname
... give your app the permission to use the internet. Try adding this to your android manifest:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
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How to stop creating .DS_Store on Mac? [closed]
I'm developing sites on mac and every time I create some folder (or file in that folder) .DS_Store is created in that folder.
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