erl -run mymodule myfunc -run init stop -noshell

http://www.trapexit.org/Running_Erlang_Code_From_The_Command_Line

defaults write com.macromates.textmate OakDocumentDisableFSMetaData 1

~ jhaddad$ nmap localhost
Starting Nmap 5.00 ( http://nmap.org ) at 2010-01-05 11:06 PST
Interesting ports on localhost (127.0.0.1):
Not shown: 499 closed ports, 492 filtered ports
PORT STATE SERVICE
80/tcp open http
88/tcp open kerberos-sec
548/tcp open afp
631/tcp open ipp
3306/tcp open mysql
3325/tcp open unknown
5900/tcp open vnc
9000/tcp open cslistener
10000/tcp open snet-sensor-mgmt

For more detailed information, try netstat:

netstat -an

You’ll get a breakdown of every socket open on your machine – useful for figuring out who’s connected and from where.

The OSX version of netstat lacks a few options – such as the useful ‘-p’ option to display the process id (PID) – which can be useful combined with kill to get rid of unwanted connections – for instance,an SSH tunnel accidentally left open.

1. When I’d leave it unplugged for a few days, the battery would be dead. After a bit of testing I noticed I was losing roughly 25% of my battery life overnight if it wasn’t unplugged.
2. It started creaking when I’d open it. I was genuinely concerned it would just fall apart when I was trying to open it.

Obviously both of these things suck, so after a bit I brought it to the Apple store. They pretty much replaced everything in it – battery, logic board, screen bezel, hinges, and gave it back to me. So problem #2 was solved, but for some reason I kept seeing the battery issue.

I brought it back Monday of this week. The guy there (Ryan) explained to me that since I wasn’t up to date w/ my software, the tech guys would basically just give it back and refuse to work on it. He suggested resetting the PRAM and calibrating the battery. He also didn’t seem to think that losing 25% battery overnight was weird, even though I’ve owned 2 MacBook Pros and 2 iBooks that never had this issue – I could leave my MacBook Pro unplugged for days and it would only lose a few %.

I did these things, but it didn’t make a difference. It was only after a ton of looking around that someone suggested turning off bluetooth.

After turning off bluetooth, I let the laptop sit overnight in sleep. I checked it the next morning, and it was only down 4% from the night before. Huge improvement. I think I could have accomplished the same thing if I turned off the “Allow Bluetooth devices to wake this computer” setting, but since I’m not using it, I’d rather just disable it.

Anyway, if anyone knows anything else about this issue, I’m interested to find out more. I like the Air as a “sit on the couch and browse the web” laptop, hate it for doing any sort of IDE development. Also not great for playing Scrabble on Facebook – it can’t hold the entire board on the screen. Lame.

Really interesting read about how to examine what’s stored in memcached.

Peep uses ptrace to freeze a running memcached server, dump the internal key metadata, and return the server to a running state. If you have a good host ejection mechanism in your client, such as in the Twitter libmemcached builds, you won’t even have to change the production server pool. The instance is not restarted, and no data is lost.

Highlights include scalability improvements, subquery optimizations and join improvements, improved stored procedure management, out parameters in prepared statements, and new information schema additions.

EasyVMX lets you create empty VMWare images. Very useful when coupled with the VMWare player.

I used Jira about 3 years ago at Infosearch Media, which I don’t think exists any more. Anyway, it trounced bugzilla then and still does.

I like this post, it makes a few really cool points. It explains how to get a list of all tables and their engine and how to get a list of foreign keys in your schema. Very cool.

Q4M looks like a pretty cool storage engine that aims to address twitter-like features. I’ll be trying this out for myself in the near future.

Q4M (Queue for MySQL) is a message queue licensed under GPL that works as a pluggable storage engine of MySQL 5.1, designed to be robust, fast, flexible. It is already in production quality, and is used by several web services (see Users of Q4M).

cp /usr/share/automake-1.9/config.guess .
cp /usr/share/automake-1.9/config.sub .

I copied the above files into my jpeg-6b directory, and

./configure –enable-shared –enable-static

worked correctly.

df -h | awk ‘NR==2 {print “Space available ” $4}’

This will actually change depending on which version of df you’re using (i think). I get different output on my Mac than I do on a CentOS machine – df seems to auto wrap lines on long drive names, so when I check the space on the CentOS server I need to change the line number (NR goes to 3) and the column to print (down to 3).

On my mac, this is what I get:

haddad:~ jhaddad$ df -h
Filesystem      Size   Used  Avail Capacity  Mounted on
/dev/disk0s2   149Gi  144Gi  4.9Gi    97%    /
devfs          106Ki  106Ki    0Bi   100%    /dev
fdesc          1.0Ki  1.0Ki    0Bi   100%    /dev
map -hosts       0Bi    0Bi    0Bi   100%    /net
map auto_home    0Bi    0Bi    0Bi   100%    /home

haddad:~ jhaddad$ df -h | awk 'NR==2 {print "Space available " $4}'
Space available 4.9Gi

I should probably clear some stuff off my drive.

However, I tried to format the drive on my Mac (Leopard) and got the error “File system formatter failed” when I tried to format the disk as MacOS Extended (Journaled). Not cool.

I found this forum thread which suggested using multiple partitions to solve the problem. When I was trying this, I went into options and changed the partition scheme from Master Boot Record to GUID partition table. It formatted fine.

To test things further, I changed the scheme back to 1 partition, and left the format as GUID partition table. This time it worked flawlessly.

The GUID type says it will not work as a start up disk MacOS older than 10.4. So if you’re still on Panther you can’t boot up off my backup drive. Try not to cry too much.

Update: here’s a few reasons why GUID owns MBR

I found this post on dzone, which I followed and was able to use libjpeg just fine.

tar zxvf jpegsrc.v6b.tar.gz
cd jpeg-6b
cp /usr/share/libtool/config.sub .
cp /usr/share/libtool/config.guess .
./configure --enable-shared --enable-static
make
sudo make install
sudo ranlib /usr/local/lib/libjpeg.a

I’m pretty sure I didn’t do the last step (sudo ranlib), and it worked fine.

configure: error: installation or configuration problem: C++ compiler cannot create executables.

It took me forever to figure this out, but I had to install the g++ library, then it compiled fine.

yum install gcc-c++