yum install php53-xml

or if you’re using puppet

package { ["php53-xml"]:
          ensure => present
        }

And finally, to get it to install, I used the below. I had to make it go to multiple lines to fit on the page but I have it all on 1 line in my puppet script:

exec { "pear channel-discover pear.phpunit.de;
pear channel-discover pear.symfony-project.com;
pear install --alldeps phpunit/PHPUnit  ":
          creates => "/usr/bin/phpunit"
 }

1> i:im(). 

My Erlang Makefile:

EBIN_DIR := ebin
SRC_DIR := src
EXAMPLES_DIR := examples
INCLUDE_DIR := include
ERLC := erlc
ERLC_FLAGS := +debug_info +native -W -I $(INCLUDE_DIR) -o $(EBIN_DIR)

all:
	@mkdir -p $(EBIN_DIR)
	$(ERLC) $(ERLC_FLAGS) $(SRC_DIR)/*.erl

clean:
	@rm -rf $(EBIN_DIR)/*
	@rm -f erl_crash.dump

Read up on the Erlang docs.

The debugger can be a bit weird in that it doesn’t always find your ebin directory (if you’re compiling to a separate ebin dir)… it took me a bit to figure out. Also on the Mac it seems to either crash or not launch timetimes.

First, figure out which VMs you have on your machine.

haddad-work:~ jhaddad$ VBoxManage list vms
Oracle VM VirtualBox Command Line Management Interface Version 3.2.6
(C) 2005-2010 Oracle Corporation
All rights reserved.

"WebServer" {2c61a180-e098-4926-b09a-27e431791c88}

Then start it using VBoxHeadless

nohup VBoxHeadless -s WebServer -vrdp on  &

I’m using Cord for RDP.

Open up Cord. If you’re using the default settings, you can just go to quick connect and type “localhost”. You’ll see your VM booting.

erl -run mymodule myfunc -run init stop -noshell

http://www.trapexit.org/Running_Erlang_Code_From_The_Command_Line

Well, I feel like an idiot.  It turns out there’s a great extension built into PHP to do just that, and it’s the DOM extension.  Using this, parsing HTML with PHP is just as easy as accessing the DOM using JQuery. (hint: very easy).

Lets say we’ve got a page our drive already.  For this example, I’ll use the homepage of this blog.  We’re going to parse out all the links.  I’ve saved the page as index.html and in the same directory I’ve created the parser script.

<?
$dom = new DomDocument;

// you can use loadHTML if you already have your string in memory
$dom->loadHTMLFile( "index.html" );
$dom->preserveWhiteSpace = false;

// grab all the A tags
// returns a domnodelist
$tags = $dom->getElementsByTagName( 'a' );

// you can actually iterate over the tags returned - 

// I'm not sure why they don't say that more explicitly

echo "Total length:"  . count($tags->length) . "\n";

foreach($tags as $t)
{
	// each of these is a DOMElement object
	// the value is what's inside the tag
	// the attributes can also be accessed
	printf( "%-50s%s   \n", $t->nodeValue, $t->getAttribute('href') );

}

Here’s a glimpse of the output:

vim                 http://www.rustyrazorblade.com/category/vim/  
virtual box         http://www.rustyrazorblade.com/category/virtual-box/   
vmware              http://www.rustyrazorblade.com/category/vmware/
weird               http://www.rustyrazorblade.com/category/weird/   
wikipedia           http://www.rustyrazorblade.com/category/wikipedia/
windows             http://www.rustyrazorblade.com/category/windows/  
xcode               http://www.rustyrazorblade.com/category/xcode/ 


Here’s another great reference I originally used to get started:

You can take this a bit further if you want to use the php curl extension.  Additionally, if you’re interested in using the advanced curl_multi_exec functionality, check out my previous post.

Edit: cynope on reddit suggested phpquery. I haven’t used it yet but it looks pretty cool. If I get a chance to try it I’ll post a followup.

puppet --configprint all

It’ll print all your puppet configuration variables.

yum install -y gcc kernel-devel-`uname -r`
mkdir /mnt/cdrom
mount -o ro -t iso9660 /dev/cdrom /mnt/cdrom
sh /mnt/cdrom/VBoxLinuxAdditions-amd64.run

Info found on tuxtraining.com

git filter-branch -f --index-filter 'git update-index --remove filename' HEAD
git push --force --verbose --dry-run
git push --force

Slight better version. Only rewrites history from the first commit the file existed.

git filter-branch -f --index-filter 'git update-index --remove filename' ..HEAD
git push --force --verbose --dry-run
git push --force

Found on github.

I’m setting all this up with puppet standalone. I don’t think we really gain anything by using the daemons, so it’s just a simple call to

puppet site.pp -v

And the changes are applied.

I ran into a snag today trying to get templates working. I kept getting the below error when trying to update my test system:

Could not find template ‘push.erb’ at /etc/puppet/manifests/site.pp:32 on node somename.myserver.local

Using strace:

[root@somename manifests]# strace -o ~/trace.txt -e trace=file puppet site.pp
Could not find template 'push.erb' at /etc/puppet/manifests/site.pp:32 on
node somename.myserver.local
[root@somename manifests]# tail -n 1 ~/trace.txt
stat("/var/puppet/templates", 0x7fffb7073a30) = -1 ENOENT (No such file or directory)

Fortunately there’s also config tool to check this stuff:

[root@somename manifests]# puppet --configprint templatedir
/var/puppet/templates

I have everything under /etc/puppet, NOT /var/puppet. I want the templates directory to reside in there too. I had a /etc/puppet/puppetd.conf file, and I set the templatedir variable in there under [puppetd] and [puppetmasterd] and [puppet] (I really had no idea which it needed) – and when that still didn’t work I tried renaming the config to puppet.conf. These are the lines I needed:

[puppet]
templatedir=/etc/puppet/templates

Thanks to the guys in #puppet on freenode for helping me sort this out.

See the puppet site and documentation for more info.

# create a folder for the mount point
sudo mkdir /Volumes/music

# mount the disk
mount -t afp afp:/// /Volumes/music/

#refresh the finder for when you get back
disktool -r

# when you're done
sudo umount /Volumes/music

Found on macosxhints