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How to call shell commands from Ruby
...ed backticks – `cmd`
This is like many other languages, including Bash, PHP, and Perl.
Returns the result (i.e. standard output) of the shell command.
Docs: http://ruby-doc.org/core/Kernel.html#method-i-60
value = `echo 'hi'`
value = `#{cmd}`
Built-in syntax, %x( cmd )
Following the x charac...
quick random row selection in Postgres
...heck this link out for some different options.
http://www.depesz.com/index.php/2007/09/16/my-thoughts-on-getting-random-row/
Update: (A.Hatchkins)
The summary of the (very) long article is as follows.
The author lists four approaches:
1) ORDER BY random() LIMIT 1; -- slow
2) ORDER BY id where...
Eclipse syntax highlighting preferences save and restore
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Worked for me just overwriting the file org.eclipse.php.ui.prefs on Mars.1 (4.5.1)
– Rodney Salcedo
Nov 2 '15 at 14:51
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Tri-state Check box in HTML?
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use this url (help.dottoro.com/ljuocesd.php) instead. It shows who supports it (everyone bar opera), since when, and visually displays what it is. People are scared of the spec pages. +1 for this not-a-plugin solution
– Hashbrown
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.htaccess not working apache
... from AWS EC2 service running on Linux ubuntu and I have installed apache, php, and mysql.
12 Answers
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MySQL Query GROUP BY day / month / year
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Oh god, if I knew this earlier...so many lines of PHP to do something mysql can do in one line.
– nights
Nov 1 '18 at 3:01
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Any way to select without causing locking in MySQL?
...long will this statement take affect? I'm going to use this statement in a PHP programme,and should be best reset TRANSACTION ISOLATION LEVEL automatically once query finished
– omg
May 27 '09 at 20:17
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Using CSS :before and :after pseudo-elements with inline CSS?
...ich strips anything in <style> tags. See here (zurb.com/ink/inliner.php) for an automator
– kez
Mar 12 '14 at 11:44
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Is there a way to make text unselectable on an HTML page? [duplicate]
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According to dev.l-c-n.com/CSS3-selectors/browser-support.php , this selector should be supported in IE8 and above, and possibly IE7.
– EricP
Nov 17 '11 at 5:14
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Setting Django up to use MySQL
I want to move away from PHP a little and learn Python. In order to do web development with Python I'll need a framework to help with templating and other things.
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