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(13: Permission denied) while connecting to upstream:[nginx]

... I had a similar issue getting Fedora 20, Nginx, Node.js, and Ghost (blog) to work. It turns out my issue was due to SELinux. This should solve the problem: setsebool -P httpd_can_network_connect 1 Details I checked for errors in the SELinux logs: sudo cat ...
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MySQL/SQL: Group by date only on a Datetime column

... 294 Cast the datetime to a date, then GROUP BY using this syntax: SELECT SUM(foo), DATE(mydate) F...
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Referring to a file relative to executing script

... See: BASH FAQ entry #28: "How do I determine the location of my script? I want to read some config files from the same place." Any solution isn't going to work 100% of the time: It is important to realize that in the general case, this probl...
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What is a Context Free Grammar?

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C# code to validate email address

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Saving image from PHP URL

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Redirecting stdout to “nothing” in python

... 237 Cross-platform: import os import sys f = open(os.devnull, 'w') sys.stdout = f On Windows: ...
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How does a Linux/Unix Bash script know its own PID?

... 240 The variable '$$' contains the PID. ...
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How can I manipulate the strip text of facet_grid plots?

....x = theme_text(size = 8, colour = "red", angle = 90)) Update: for ggplot2 version > 0.9.1 qplot(hwy, cty, data = mpg) + facet_grid(. ~ manufacturer) + theme(strip.text.x = element_text(size = 8, colour = "red", angle = 90)) ...
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How do I declare an array of weak references in Swift?

... | edited Apr 20 '19 at 13:46 answered Jun 9 '14 at 20:07 ...