Category Archives: Ubuntu / Debian

Setting up EasyEngine on Ubuntu 14.04 + PHP 5.5 + Nginx + Memcached Object cache

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Start with a base Ubuntu 14.04 install, and then run:

curl -sL rt.cx/ee | sudo bash    # install easy-engine
source /etc/bash_completion.d/ee # code completion in CLI
apt-get install memcached php5-memcached # install memcached and  memcached php bridge (optionally also install php5-memcache)

ee system install                # install nginx, php, mysql, postfix
ee site create example.com --wp  # install wordpress on example.com

Source

That’s really all you need to do!

SVG to PNG conversion with transparent background in ImageMagick

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Here’s a quick way to convert SVG to PNG with transparent background

convert -background none image.svg image.png

Adjust size

If you want to scale the image to a larger size without antialiasing (which makes the image look fuzzy), you can add the density parameter, like this:

convert -density 200 -background none image.svg image.png

Simply increase the density value to increase the image size.

To install ImageMagick on OS X with Homebrew:

brew install imagemagick

For Ubuntu:

sudo apt-get install imagemagick

Display output of multiple log files with tail

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To show the output from all log files in a directory, run:

tail -f *.log

Output example:

==> log1 <==
1.2.3.4 - - [16/Nov/2014:03:31:06 +0000] "GET /robots.txt HTTP/1.1" 200 107
1.2.3.4 - - [16/Nov/2014:03:31:07 +0000] "GET / HTTP/1.1" 200 7777
1.2.3.4 - - [16/Nov/2014:03:36:05 +0000] "GET /robots.txt HTTP/1.1" 200 107

==> log2 <==
1.2.3.4 - - [16/Nov/2014:05:39:36 +0000] "GET / HTTP/1.1" 200 34569
1.2.3.4 - - [16/Nov/2014:05:40:44 +0000] "POST /wp-admin/ HTTP/1.0" 200 961
1.2.3.4 - - [16/Nov/2014:05:40:57 +0000] "POST /wp-admin/ HTTP/1.0" 200 50505

Debian LAMP stack in one command

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Start out with the basics – Apache, MySQL and PHP + extensions

apt-get install mysql-server mysql-client apache2 php5 php5-cli libapache2-mod-php5 php5-mysql php5-curl php5-gd php-pear php5-imagick php5-mcrypt php5-memcache php5-mhash php5-sqlite php5-xmlrpc php5-xsl php5-json php5-dev libpcre3-dev

I recommend using this on Debian Jessie. That way you get a bleeding edge version of PHP (5.5.8 as of right now)

OpCode cache and APCu (Optional)

pecl install ZendOpcache-beta
pecl install apcu-beta

Add the following to /etc/php5/apache2/php.ini

zend_extension=opcache.so
extension=apcu.so

Configure Opcache by adding this to /etc/php5/apache2/php.ini

opcache.max_accelerated_files=30000
opcache.memory_consumption=160
opcache.revalidate_freq=0

Restart apache. The extensions should be available and configured. (You can verify this via phpinfo(); )

Useful tools (Optional)

apt-get install htop vim

PHP 5.5 on Raspbian Raspberry Pi

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php 5.5.8

Raspberry pi runs Debian Wheezy, but with just one quick line change we can upgrade to Debian Jessie which is a newer version and provides PHP 5.5 binaries (5.5.8 at the time of this blog post.)

Start out by editing the APT sources:

vim /etc/apt/sources.list

Change wheezy to jessie, so that it looks like this:

deb http://mirrordirector.raspbian.org/raspbian/ jessie main contrib non-free rpi

(Don’t add or remove any lines, just change the one above)

Now run:

apt-get update && apt-get upgrade && apt-get autoremove

If you havent aready installed PHP, you can do it now via:

apt-get install php5 php5-cli

Finally, confirm your PHP version:

php -v

This should result in:

PHP 5.5.8-2 (cli) (built: Jan 18 2014 07:39:52)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2013 Zend Technologies