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Bash Templating: How to build configuration files from templates with Bash?

...\}/defined $ENV{$1} ? $ENV{$1} : $&/eg' < template.txt to replace all ${...} strings with corresponding enviroment variables (do not forget to export them before running this script). For pure bash this should work (assuming that variables do not contain ${...} strings): #!/bin/bash while...
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The 3 different equals

...fer the one or the other and performance must not be taken into account at all. – lucaferrario Feb 18 '16 at 15:40 add a comment  |  ...
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How does facebook, gmail send the real time notification?

...JAX, it'll take a lot of the cross-compability problems away. In terms of PHP, you could simply poll an event log database table in your PHP script, and only return to the client when something happens? There are, I expect, many ways of implementing this. Implementing: Server Side: There appear ...
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Using PUT method in HTML form

... XHTML 1.x forms only support GET and POST. GET and POST are the only allowed values for the "method" attribute. share | improve this answer | follow | ...
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Get the new record primary key ID from MySQL insert query?

...in table2. Is concurrency taken care of or will I have to do it in PHP manually, for incoming database write requests? – bad_keypoints Sep 16 '13 at 7:46 ...
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How do I get a YouTube video thumbnail from the YouTube API?

...mg.youtube.com/vi/<insert-youtube-video-id-here>/maxresdefault.jpg All of the above URLs are available over HTTP too. Additionally, the slightly shorter hostname i3.ytimg.com works in place of img.youtube.com in the example URLs above. Alternatively, you can use the YouTube Data API (v3) to...
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Why is nginx responding to any domain name?

I have nginx up and running with a Ruby/Sinatra app and all is well. However, I'm now trying to have a second application running from the same server and I noticed something weird. First, here's my nginx.conf: ...
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How to call a function from a string stored in a variable?

... Thank you guys, for the replies, it indeed throws an error, even in php 5.4, so that syntax only works with object methods. Edited the post. – Lajos Meszaros Feb 3 '14 at 10:10 ...
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Get random item from array [duplicate]

...y pick youtube video from playlist on page load and is working great: <?php $videos = Array(0,1,2,3); echo $videos[array_rand($videos)]; ?> – ioTus Jul 3 '14 at 6:07 64 ...
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PHP reindex array? [duplicate]

...lues does the job : $myArray = array_values($myArray); Also some other php function do not preserve the keys, i.e. reset the index. share | improve this answer | follow ...