My grep commands

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When I search for things in my codebase I find that using the terminal and grep is usually the best option. Here is what I usually run:

 

Learn how to use top command in linux

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I find myself using this often while debugging errors or trying to figure why a server is slow or unresponsive.

 

Vagrant Boxes / VMWare Fusion / CentOS 7

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Use one found here: http://www.vagrantbox.es you can use one of those to build upon or you can create one.

These steps are if you want to to create a fresh box.
Grab the latest CentOS image here:
http://www.centos.org/download/

I use the minimal image http://ftp.usf.edu/pub/centos/7.0.1406/isos/x86_64/CentOS-7.0-1406-x86_64-Minimal.iso

First you need to create a VM using Fusion.

  1. Select “Install from disc or image” >> Continue
  2. “Use another disc or disc image” >> Find your iso >> Continue
  3. Uncheck “Use Easy Install” make sure “Make your home folder accessible to the virtual machine is unchecked. >> Continue
  4. Click “Customize Settings” >> Rename your vm and place it somewhere safe.

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Swift – Convert String to Double

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Swift has conventions to convert a string into an int

But for doubles, lets say you want var dblString = “5.559” converted from a string to a double. You can’t just do dblString.toDouble()!, not going to happen it just gives an error. So the solution for now is to use Objective-C