Mac: Rename all files names in a directory to lower case

Just like my last post, I was working with a directory of about 1000 files. There were all sorts of problems with the way they were named. Anyone who is used a *nix type system will know that “.jpg”, “.Jpg”, “.JPG” are all very separate things. To solve the issue I was having I needed to rename all of the files in the directory to lowercase.

I fired up my friend the Mac terminal and ran the following command:

for i in *; do mv "$i" "$(echo $i|tr A-Z a-z)"; done

The code loops through each of the files in the current directory and renames it to the lowercase equivalent. fast, simple, elegant. Major time saver.

Mac: Converting a directory of images into JPG files

Recently I was presented with a problem where I had a directory of about 1000 graphic files of mixed formats (png, gif, bmp, jpg), and I needed to convert them all to jpg files.

I tried various solutions but I ended using the following command in my Mac’s terminal.

mkdir jpegs; sips -s format jpeg *.* --out jpgs

This command creates directory called “jpgs”, and converts all of the files in the current directory into .jpg format, and moves them into the newly created “jpgs” direcotry.

It truly saved the day.

Yes, you can “touch” this

“touch” is a handy unix utility to udate the time stamp on a file. Recenly I ran into a case on my mac book pro that required me to update all of the files and sub-directories of a project with the current date.

In terminal, I could have gone one by one an used this command on each file

touch thisIsAFileName

But after a few moments of onterweb searching, I came across a perfect solution

find . -print0 | xargs -0 touch

This command will find all of the file in all sub-directories, even if they have spaces in their name, and set their last updated time to the current time.

Just a handy tip I thought I would share

Optimizing the performance of WordPress

It’s no secret that I LOVE WordPress. I’ve been using the software for 6 years and have no plans to stop any time soon. Last year I attended WordCamp LA with @JasonKeller, it was awesome. I knew that I had to be involved with WordCamp 2010.

When WordCamp 2010 was announced, I signed up as a speaker. My topic, “Improving the performance of WordPress”.

I had a great time preparing and delivering my presentation. A lot of people asked me to post the slides online. I decided to do one better, and post a recorded version of my presentation.

Download the slides in PDF format

Macbook Pro – Make an external monitor your primary display

Recently, I got a mac laptop at work, which is sup[er sweet, but I wanted to hook it up to a real monitor, keyboard and mouse. All very easy things to do. The problem I had was that the laptop was acting as the primary monitor. Every application that I drug over to the secondary monitor worked great, but the application tool bar was still on the laptop.. annoying.

I did a quick Google search to see if there was a solution to the problem. There was, and it’s dead simple to put into action.

Connect the external monitor

  • Start up the “System Preferences” app
  • Click on “Display Preferences”
  • Within Display Preferences, choose Arrangement. You should see two blue squares that represent each display, main and secondary. On the main display you’ll notice a bar along the top.
  • Click and drag this bar from the Main Display to the Secondary Display.
  • Close Display Preferences
  • That’s it!