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Find the IP address of the client in an SSH session

... Check if there is an environment variable called: $SSH_CLIENT OR $SSH_CONNECTION (or any other environment variables) which gets set when the user logs in. Then process it using the user login script. Extract the IP: $ echo $SSH_CLIENT | awk '{ print $1}' 1.2...
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Chai: how to test for undefined with 'should' syntax

...advantages of the should syntax. It works by adding the should property to all objects, but if a return value or variable value is undefined, there isn't a object to hold the property. The documentation gives some workarounds, for example: var should = require('chai').should(); db.get(1234, functi...
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bootstrap button shows blue outline when clicked

... If you want to make sure you're hitting all of your buttons, just use button { outline: none !important; box-shadow: none !important; } – Drew Oct 5 '18 at 15:29 ...
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How to format strings using printf() to get equal length in the output?

... printf allows formatting with width specifiers. e.g. printf( "%-30s %s\n", "Starting initialization...", "Ok." ); You would use a negative width specifier to indicate left-justification because the default is to use right-justif...
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Mod in Java produces negative numbers [duplicate]

....floorMod(-1, 2); //== 1 Note: If the modulo-value (here 2) is negative, all output values will be negative too. :) Source: https://stackoverflow.com/a/25830153/2311557 share | improve this answe...
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jQuery get html of container including the container itself

...wrap the container in a dummy P tag you will get the container HTML also. All you need to do is var x = $('#container').wrap('<p/>').parent().html(); Check working example at http://jsfiddle.net/rzfPP/68/ To unwrap()the <p> tag when done, you can add $('#container').unwrap(); ...
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unix diff side-to-side results?

...ifferences between similar files without getting in the way. This is especially helpful for identifying and understanding small changes within existing lines. Instead of trying to be a diff replacement for all circumstances, the goal of icdiff is to be a tool you can reach for to get a better pictur...
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What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?

...ch should help beginners (and intermediate) programmers to recognize and challenge their unwarranted assumptions in C, C++ and their platforms. ...
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Catch paste input

... $(element).val(); // do something with text }, 100); }); Just a small timeout till .val() func can get populated. E. share | improve this answer | follow ...
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Can you detect “dragging” in jQuery?

...sedown, start set the state, if the mousemove event is fired record it, finally on mouseup, check if the mouse moved. If it moved, we've been dragging. If we've not moved, it's a click. var isDragging = false; $("a") .mousedown(function() { isDragging = false; }) .mousemove(function() { isD...