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For example following command adds user execute permission to an arbitrary file:

git update-index --chmod=+x <file>
git ls-files --stage
git commit -m "Set exec"

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Nginx Mainline version

http://nginx.org/en/linux_packages.html#mainline

Set limits

/lib/systemd/system/nginx.service

[Service]

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500mb

wget --output-document=/dev/null http://speedtest.wdc01.softlayer.com/downloads/test500.zip

10mb

wget --output-document=/dev/null http://speedtest.wdc01.softlayer.com/downloads/test10.zip

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default domain

server {
  listen  80 default_server;

  access_log  /var/log/nginx/default__access.log  main;
  error_log   /var/log/nginx/default__error.log   error;

 client_max_body_size 512k;

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http://jpauli.github.io/2015/03/05/opcache.html

Configuring OPCache#
If you use a framework based application, like a Symfony2 based application, I strongly suggest :

you turn off revalidation mechanism on production (turn opcache.validate_timestamps to 0)
you deploy using a full new runtime of your scripts, this is the case with Symfony2 applications
you size correctly your buffers
opcache.memory_consumption, the most important
opcache.interned_strings_buffer , monitor your usage, and size accordingly, take care if you tell OPCache to save comments, which you will likely do if you use PHP "annotations" (opcache.save_comments = 1), those are strings, big strings, that will eat your interned strings buffer