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Getting root permissions on a file inside of vi? [closed]

Often while editing config files, I'll open one with vi and then when I go to save it realize that I didn't type 10 Answers...
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When is CRC more appropriate to use than MD5/SHA1?

... CRC works fine for detecting random errors in data that might occur, for example, from network interference, line noise, distortion, etc. CRC is computationally much less complex than MD5 or SHA1. Using a hash function like MD5 is probably overkill for r...
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How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?

...ll TTY devices but you might want to exclude those pesky virtual terminals and pseudo terminals. I suggest you examine only those which have a device/driver entry: # ll /sys/class/tty/*/device/driver lrwxrwxrwx 1 root root 0 2012-03-28 19:07 /sys/class/tty/ttyS0/device/driver -> ../../../bus/pnp...
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How do I update a Python package?

I'm running Ubuntu 9:10 and a package called M2Crypto is installed (version is 0.19.1). I need to download, build and install the latest version of the M2Crypto package (0.20.2). ...
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How to use base class's constructors and assignment operator in C++?

I have a class B with a set of constructors and an assignment operator. 5 Answers 5 ...
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How to update a plot in matplotlib?

...ure here. I allow the user to specify the units in the time scale (x-axis) and then I recalculate and call this function plots() . I want the plot to simply update, not append another plot to the figure. ...
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Retargeting solution from .Net 4.0 to 4.5 - how to retarget the NuGet packages?

...grated a solution that is currently targeting .NET 4.0 in VS2010 to VS2012 and now I would like to re-target it to .Net 4.5 ...
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How to get the input from the Tkinter Text Widget?

...) The -1c deletes 1 character, while -2c would mean delete two characters, and so on. def retrieve_input(): input = self.myText_Box.get("1.0",'end-1c') share | improve this answer | ...
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Handling Touch Event in UILabel and hooking it up to an IBAction

...rner try the tag property. make sure to use labelTap: instead of labelTap. and use - (void) labelTap:(id)sender;. – thedjaney Jul 28 '14 at 9:43 1 ...
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Accessing items in an collections.OrderedDict by index

...ems method returns an interable dictionary view object rather than a list, and don't support slicing or indexing. So you'd have to turn it into a list first. docs.python.org/3.3/library/stdtypes.html#dict-views – Peter DeGlopper Jun 5 '13 at 21:51 ...