After logging in to your server via ssh:
 $ find / -type f -printf "%s %h/%f\n" | sort -rn -k1 | head -n 50 | awk '{ print $1/1048576 "MB" " " $2}' ( hit enter )

Using terminal

$ ps ax | grep httpd | wc -l

$ /sbin/shutdown -r 0

After a successful addition to apache with the R package, you can type this in the browser address bar and you should see something similar to phpinfo().
http://localhost/RApacheInfo

I found this at: https://github.com/tregoning/RApache-Installer/blob/master/install-rapache.sh

#!/bin/bash -
###############################################################################
# File: install-rapache.sh
#
# Description: Script to install & setup R(Apache) on Mac OS 10.6
#
# Prerequisites: Xcode (free Xcode3 can be downloaded here: http://bit.ly/xcode3Download)
# R (Install R-2.13.0.pkg from http://cran.r-project.org/bin/macosx)
# Ensure you click ‘Customize’ and select ‘R GUI 1.40 (64-bit)’
# if your machine supports it
#
# Instructions: run this script as *ROOT*
#
# Todo: -Ability to install in 32 bit machines
# -Option to install R from source
#
# Author: JT
###############################################################################

export EXPECTED_HASH=f66641def8127efd35b76d6e32bfaa13
export ACTUAL_HASH=`MD5 -q /private/etc/apache2/httpd.conf`
export EXPECTED_USER=root
export ACTUAL_USER=`whoami`

#Checking script is being run as root
if [ "$EXPECTED_USER" != "$ACTUAL_USER" ];then
echo ”
Error: Insufficient privileges

This script needs to be run as root. Simply run:
sudo ./install-rapache.sh
”
exit
fi

#Checking R is installed
if [ ! -s /usr/bin/R64 ]; then
echo ”
Error: Required software is not installed in your system

R is a prerequisite for installing R(Apache)
Please install R-2.13.0.pkg from http://cran.r-project.org/bin/macosx and,
during the setup ensure you click ‘Customize’ and add the ‘R GUI 1.40 (64-bit) option
if your machine supports it’
”
exit
fi

#Checking Xcode is installed
if [ ! -s /Developer ]; then
echo ”
Error: Required software is not installed in your system

Please install Xcode.
Note: Xcode 3 can be downloaded for free here: http://bit.ly/xcode3Download
”
exit
fi

#Installing required Apache2 library: libapreq2
cd /tmp
curl -O http://apache.mirrors.timporter.net/httpd/libapreq/libapreq2-2.13.tar.gz
tar xzvf libapreq2-2.13.tar.gz
cd libapreq2-2.13
./configure
make
sudo make install

#Installing R(Apache)
cd /tmp
curl -O http://biostat.mc.vanderbilt.edu/svn/rapache/web/files/rapache-1.1.14.tar.gz
tar xzvf rapache-1.1.14.tar.gz
cd rapache-1.1.14
./configure –with-apache2-apxs=/usr/sbin/apxs –with-R=/usr/bin/R64
sudo make
sudo make install

#Editing httpd.conf
if [ "$EXPECTED_HASH" == "$ACTUAL_HASH" ];

then
cp /private/etc/apache2/httpd.conf /private/etc/apache2/httpd.conf_bk

sed -i ” -e ’118i\
LoadModule R_module libexec/apache2/mod_R.so’ /private/etc/apache2/httpd.conf

sed -i ” -e ’119i\
ROutputErrors’ /private/etc/apache2/httpd.conf

else
echo ”
########################################################################################
** MANUAL STEP **
It looks like you have been tinkering with Apache’s config, as a result you will have to
manually add the two lines below after your last ‘LoadModule’ entry in your httpd.conf
file (/private/etc/apache2/httpd.conf)

—–COPY STARTS—–
LoadModule R_module libexec/apache2/mod_R.so
ROutputErrors
—– COPY ENDS —–

When you are done bounce Apache:
sudo apachectl restart

And check the R(Apache) info page

http://localhost/RApacheInfo

########################################################################################”
fi

echo ‘
# Required for report about R running within Apache

SetHandler r-info
SetHandler r-script
RHandler sys.source
‘ >> /private/etc/apache2/httpd.conf

#Bounce Apache and open demo page if installation was automated
if [ "$EXPECTED_HASH" == "$ACTUAL_HASH" ];
then
#Restart Apache
sudo apachectl restart

#Open Browser with info page
open http://localhost/RApacheInfo
fi

$ sudo nano /etc/apache2/httpd.conf

$ nano /etc/apache2/extra/httpd-vhosts.conf
add to the bottom of the page

Edit the /etc/hosts

$ sudo nano /etc/hosts

Make the changes needed

crontab -u apache -e

This is from:

http://www.coolestguyplanet.net/how-to-install-php-mysql-apache-on-os-x-10-6/

maybe need this page:

http://www.coolestguyplanet.net/installing-phpmyadmin-on-mac-osx-10-7-lion/

Install and configure PHP, MySQL & Apache on OS X Lion 10.7 and 10.6

How to install and configure PHP, MySQL & Apache on OS X 10.7 Lion and OS X 10.6 Snow Leopard

Apache and PHP already come preloaded in OS X 10.7 Lion and 10.6 Snow Leopard, the versions are PHP 5.3.4 and Apache 2.2.19, these 2 pieces of Open Source software are part of the “AMP” stack with MySQL the missing component.

A – Apache M – MySQL P – PHP

Their are other options for Mac users to install an AMP stack using prebuilt point and click downloads including the following, MAMP, DAMP, XAMPP and BitNami – these installations use separate binaries outside of the regular OS X software so no conflict occurs and it makes it easier to delete the stacks without affecting the core OS.

This tutorial bypasses the 3rd party AMP stacks and uses the installed components with the exception of MySQL which is a separate install, unless you have OS X Server, which then MySQL comes preloaded in 10.6 but not 10.7 which has dumped MySQL in favour of PostgreSQL instead – you can still install MySQL on 10.7 Server with the instructions below.

To get Apache, MySQL and PHP running natively on OSX is quite easy and straightforward – this guide should have you up and running in no time.

PHP

You can verify your version of PHP by launching the Terminal application, as found in the Utilities folder: /Applications/Utilities/Terminal

To find the PHP version, type at the prompt:

username@[~]: php -v

And the version is displayed:

PHP 5.3.6 with Suhosin-Patch (cli) (built: Jun 16 2011 22:26:57)
Copyright (c) 1997-2011 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2011 Zend Technologies
To find the Apache version, type at the prompt:

username@[~]: httpd -v

And the version is displayed:

Server version: Apache/2.2.19 (Unix)
Server built: Jun 16 2011 22:09:54
So far so good, however by default PHP is not enabled and has to have its module loaded you need to make a simple edit in the Apache configuration file “httpd.conf” file. This is filed in /etc/apache2/httpd.conf, get there in the terminal by typing:

username@[~] cd /etc/apache2/
Then in the terminal you need to use a text editor either “vi” or nano” will do, this file also has stricter permissions so the “sudo” command needs to be used to edit the file, you will need to be an admin user to have permission to change the file, type:

username@[/etc/apache2]: sudo nano httpd.conf
and then your password.

Once in nano click “control+w” to get a search dialog, type “php” and this will bring you to the php module line:

#LoadModule php5_module libexec/apache2/libphp5.so
Uncomment out the hash # to leave it like:

LoadModule php5_module libexec/apache2/libphp5.so

enable php module in nano
Finally type “control + x” to exit and when prompted save the change by typing “y”

MySQL

So now onto the 2nd piece of the puzzle, MySQL. You need to download it from http://dev.mysql.com/downloads/mysql/, chose Mac OS X ver. 10.6 (x86, 64-bit), DMG Archive for an Intel Mac the .dmg file is a point and click installation nice and easy, you can download the tar.gz also for a command line install. The easiest format is the .dmg file as it allows for an installation visually using the GUI.

When downloading you don’t have to sign up, look for » No thanks, just take me to the downloads! – go straight to the download mirrors and download the software from a mirror which is closest to you.

After download open the .dmg and install first the mysql5.5.xxx and then the MySQLstartupitem and then the MySQLPrefPane. The first is the MySQL software, the 2nd item allows MySQL to start when the Mac is booted and the third is a System Preference that allows start/stop operation and a preference to enable it to start on boot.

Installation of MySQL
Once the installs are done you can start the mysql server right from the System Preferences which has a new preference in the “Other” category called “MySQL” click start and now it is running.

mysql-system-preference-osx
To find the MySQL version from the terminal, type at the prompt:

username@[~]: /usr/local/mysql/bin/mysql -v
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 118
Server version: 5.5.14 MySQL Community Server (GPL)
Reading history-file /Users/username/.mysql_history
Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear at the current input statement.
This also puts you in to an interactive dialogue with mySQL, type \q to exit.

If you got the error:

ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock’
then mysql was not started, go back to the System Preference and start the database.

After installation, in order to use mysql commands without typing the full path to the commands you need to add the mysql directory to your shell path, this is done in your “.bash_profile” file in your home directory, if you don’t have that file just create it using vi or nano:

username@[~]: cd ; nano .bash_profile
and then add:

export PATH=”/usr/local/mysql/bin:$PATH”
The first command brings you to your home directory and opens the .bash_profile file or creates a new one if it doesn’t exist, then add in the line above which adds the mysql binary path to commands that you can run. Exit the file with type “control + x” and when prompted save the change by typing “y”. Last thing to do here is to reload the shell for the above to work straight away.

username@[~]: source ~/.bash_profile
Then test the path by just this time issuing the mysql command without the full path:

username@[~]: mysql -v
You will get the version number again, just type “\q” to exit.

The next step is to set up a root password for mysql there are 2 ways to do this one is a regular way and the other provides additional security and disables all other access:

Regular Way

If you have set the path correctly as above:

$ mysqladmin -u root password ‘yourpasswordhere’
!use the single quotes

Then when logging in to mysql:

$ mysql -u root -pyourpasswordhere
!NB the no space between -p and the password

Securer Way

username@[~]: sudo mysql_secure_installation
NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!
In order to log into MySQL to secure it, we’ll need the current
password for the root user. If you’ve just installed MySQL, and
you haven’t set the root password yet, the password will be blank,
so you should just press enter here.
Enter current password for root (enter for none):
Go ahead and just hit enter if this is a new installation and no password currently exists, follow the prompts to set up a new root password – this is a root password just for mysql separate from the root password of OS X you should set this.

You also get asked about:

Removing anonymous users?
Disallow root login remotely?
Remove test database and access to it?
Reload privilege tables now?
If this is a new installation you can just answer yes to the questions.

Once the root user and password is set, you have to interact with mysql with the username and password, so access via command line is (note that there is no space between -p and the password):

username@[~]: mysql -u root -p[password]
So thats the two components installed with MySQL having a System Preference option to Start/Stop the database.

If you get an error message( Cannot Log in to MySQL server ) you may need to change a config file in phpmyadmin:

1. By default config.inc.php file does not exist but phpMyAdmin ships with sample config which we can use. Copy config.sample.inc.php to config.inc.php using “sudo cp config.sample.inc.php config.inc.php“
2. Edit config.inc.php using your favorite editor (I prefer vi) and change $cfg['Servers'][$i]['host'] = ‘localhost’; to $cfg['Servers'][$i]['host'] = ’127.0.0.1′;

Apache

You can start/stop the Web Server Apache in the System Preferences under Sharing and checking the WebSharing box.

web-sharing-turned-on
This can also be accomplished in the terminal using:

sudo apachectl start
sudo apachectl stop
Or restart the web server gracefully using the following:

sudo apachectl graceful
Once you start your server the there are 2 x document root folders for sharing, one is a top level and the other is user account specific:

http://localhost/

and

http://localhost/~username/

You should see a “It Works!” or a OSX welcome page depending on which document root you are at, in the finder these locations are found at your Sites folder in your home folder for local user:
/Users/username/Sites/

or at the higher level

/Library/WebServer/Documents/

The final thing to verify is that PHP is loaded and ready to go by creating a new text file, has to be plain text (use TextEdit) and typing in:

Save the file as phpinfo.php and save it to the Sites folder in your home directory. Now point your browser to:

http://localhost/~username/phpinfo.php

You should see the full PHP configuration page.

IF you do NOT see your pages, you might have to go to your Mac System Preferences->Internet and Wireless->Sharing-> Click Web Sharing and then click create personal website folder.
That’s it you are ready to develop and share!

The only difference between 10.6 and 10.7 are some incremental version numbers on Apache and MySQL otherwise the process is the same for both operating systems.

You may need to sudo:

From terminal:

$ /etc/init.d/httpd stop

$ /etc/init.d/httpd start

$ /etc/init.d/httpd restart