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source command not found in sh shell

... /bin/sh is usually some other shell trying to mimic The Shell. Many distributions use /bin/bash for sh, it supports source. On Ubuntu, though, /bin/dash is used which does not support source. Most shells use . instead of source. If you can...
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Determine if two rectangles overlap each other?

...er to construct rectangles (between 2 and 5): height, width, x-pos, y-pos. All of these rectangles will exist parallel to the x and the y axis, that is all of their edges will have slopes of 0 or infinity. ...
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Auto reloading a Sails.js app on code changes?

...rently is seems that for any code change in a sails.js app you have to manually stop the sails server and run sails lift again before you can see the changes. ...
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How do I check if an element is hidden in jQuery?

... I actually found that the reverse logic words better: !$('selector').is(':hidden'); for some reason. Worth a try. – Kzqai Jan 5 '12 at 15:36 ...
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How do I disable form fields using CSS?

... That looked like just what I was after to disable all my input fields but, although it blocks them from mouse events, they can still be accessed and changed using keyboard tab – Ken Oct 20 '15 at 15:18 ...
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How to stop Gradle task execution in Android Studio?

... you can call ./gradlew --stop in a Terminal and it will kill all gradle processes share | improve this answer | ...
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Android encryption / decryption using AES [closed]

... @Maarten Bodewes I see your warnings all over the place, under manyt posts. Could you please provide a good solution instead? – Yar Mar 30 '18 at 12:27 ...
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how to use sed, awk, or gawk to print only what is matched?

...use -E sed option to trigger modern RE format. Check re_format(7), specifically last paragraph of DESCRIPTION developer.apple.com/library/mac/#documentation/Darwin/Reference/… – anddam Mar 3 '13 at 16:33 ...
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How do I get the day of week given a date?

... Calendar math generally sucks because computers don't know what PTO is. In an effort to avoid teaching them I highly recommend obfuscating functions which determine whether it is currently a holiday or weekend. – meawoppl...
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C# vs C - Big performance difference

... Since you never use 'root', the compiler may have been removing the call to optimize your method. You could try to accumulate the square root values into an accumulator, print it out at the end of the method, and see what's going on. Edit : see Jalf's answer below ...