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#Headless Setup of Raspberry Pi Zero W (Raspberry Pi 3 Wireless) (macOS)

Formatt the Micro SD card - Open a terminal and type 'diskutil list'. Find your card and copy the disk name (For example: /dev/disk4). Format the card with diskutil eraseDisk ExFat temp disk4(Use your disk here)
Download Raspbian - wget https://downloads.raspberrypi.org/raspbian_lite_latest
Unmount the SD card - diskutil unmountDisk /dev/disk4 or whatever your disk path is
Mount the Raspbian image to the card - sudo dd if=PATH-TO-RASPBIAN-IMAGE of=/dev/disk4` or whatever your disk path is
Enable SSH on the Pi - cd /volumes && ls. You should see a boot partition from the SD card cd boot && touch ssh
Setup WiFi on the PI - While still in the boot partition of the card type nano wpa_supplicant.conf and enter network={ ssid="YOUR-SSID" psk="YOUR-WIFI-PASSWORD" }
Boot the PI - Unmount the card diskutil unmountDisk /dev/disk4 (or whatever your disk path is) and put it in the

#Setting up Docker Machine on Raspberry PI

SSH into the pi and install docker with curl -sSL https://get.docker.com | sh (If we let Machine try to install the Docker daemon it will fail.)
Change the OS's ID so Docker Machine won't throw errors. sudo nano /etc/os-release and change the line that says ID=raspbian to ID=debian
From a new terminal window run docker-machine create --driver generic --generic-ip-address YOUR-PIS-IP --generic-ssh-key ~/.ssh/id_rsa --generic-ssh-user pi --engine-storage-driver overlay2 MACHINE-NAME

How to Setup wkhtmltopdf on CentOS 7

Install Dependencies

yum install fontconfig libXrender libXext xorg-x11-fonts-Type1 xorg-x11-fonts-75dpi freetype libpng zlib libjpeg-turbo

Install wkhtmltopdf

Allow apache to execute an external program through SELinux

This is helpful when you don't want to disable SELinux but do want to allow apache to execute an external program. For example wkhtmltopdf. Run the following commands from the terminal. (This has been tested in CentOS 7.)

Allow Exicution

setsebool httpd_execmem on

Change a dirs security context if the program writes to a file

Contract Killer

The popular open-source contract for web designers and developers by Stuff & Nonsense

Originally published: 23/12/2008
Revised date: 15/12/2013
Original post

	You can check if SELinux is blocking sendmail by running:

	/usr/sbin/getsebool httpd_can_sendmail

	...which will report:

	httpd_can_sendmail --> {on\|off}

	...and if it is off, you can turn it on using

	<?php

	if($believeInAdhereToAndRelyOnJesus == TRUE) {
	//Run functions
	loveGod();
	loveOthersAsYourself();
	makeDisciples();
	}
	else {
	//Output a message and terminate the current script

	The php_curl.dll file that came with WampServer 2.2 distribution does not work on 64bit systems. You can download a working php_curl.dll file (php_curl-5.3.13-VC9-x64.zip) from http://www.anindya.com/php-5-4-3-and-php-5-3-13-x64-64-bit-for-windows/

	1. Setup wamp.
	2. From wamp icon select PHP > PHP extensions > php_curl (it needs to be checked)
	3. Extract php_curl.dll from the zip and copy it to PHP extension directory (mine is c:\wamp\bin\php\php5.3.13\ext)
	4. Restart all services from the wamp menu
	5. Go to localhost and click phpinfo() link and see that curl is there…