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Check existence of input argument in a Bash shell script

... It is: if [ $# -eq 0 ] then echo "No arguments supplied" fi The $# variable will tell you the number of input arguments the script was passed. Or you can check if an argument is an empty string or not like: if [ -z "$1" ] then echo...
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How to compare two floating point numbers in Bash?

...nation Piping through the basic calculator command bc returns either 1 or 0. The option -l is equivalent to --mathlib; it loads the standard math library. Enclosing the whole expression between double parenthesis (( )) will translate these values to respectively true or false. Please, ensure tha...
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How to set the thumbnail image on HTML5 video?

... Add poster="placeholder.png" to the video tag. <video width="470" height="255" poster="placeholder.png" controls> <source src="video.mp4" type="video/mp4"> <source src="video.ogg" type="video/ogg"> <source src="video.webm" type="video/webm"> <objec...
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How to copy yanked text to VI command prompt

... answered May 25 '09 at 12:28 Mykola GolubyevMykola Golubyev 50k1414 gold badges7979 silver badges100100 bronze badges ...
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ASP.NET MVC3 - textarea with @Html.EditorFor

I have ASP.NET MVC3 app and I have also form for add news. When VS2010 created default view I have only text inputs for string data, but I want to have textarea for news text. How I can do it with Razor syntax. ...
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Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'

... Martin RMartin R 468k7575 gold badges10711071 silver badges11821182 bronze badges ...
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When to make a type non-movable in C++11?

... 110 Herb's answer (before it was edited) actually gave a good example of a type which shouldn't be m...
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Bring a window to the front in WPF

... | edited Jul 2 '10 at 7:45 answered Dec 20 '08 at 20:32 ...
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What is the coolest thing you can do in

...= agent.Characters.Character(agentName) character.Show character.MoveTo 500, 400 character.Play "GetAttention" character.Speak "Hello, how are you?" Wscript.Sleep 15000 character.Stop character.Play "Hide" There are a great many other commands you can use. Check http://www.microsoft.com/technet/...
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System.Net.Http: missing from namespace? (using .net 4.5)

... 108 HttpClient lives in the System.Net.Http namespace. You'll need to add: using System.Net.Http;...