Get File MIME Type from Command Line
I've gotten skilled at shell scripting over the years. I love a good GUI but knowing how to automate makes you a much more powerful engineer. Much of my scripting requires recursing over directories and processing a file if it meets a given criteria, which is often file extension or MIME type.
You can use the following shell command to get a file's MIME type:
file --mime-type -b Downloads/main.js
# text/plain
file --mime-type -b Downloads/logo.jpg
# image/jpeg
It's important to use the brief (-b) option in the command or you may receive an error message.
MIME type is used for validation and any number of other informational use cases. Luckily the file command and and a flag is all you need!
![Convert XML to JSON with JavaScript]()
If you follow me on Twitter, you know that I've been working on a super top secret mobile application using Appcelerator Titanium. The experience has been great: using JavaScript to create easy to write, easy to test, native mobile apps has been fun. My...
![Animated 3D Flipping Menu with CSS]()
CSS animations aren't just for basic fades or sliding elements anymore -- CSS animations are capable of much more. I've showed you how you can create an exploding logo (applied with JavaScript, but all animation is CSS), an animated Photo Stack, a sweet...
![WordPress-Style Comment Controls Using MooTools or jQuery]()
WordPress has a nice little effect on the Admin Dashboard where it shows and hides the comment control links when you mouseover and mouseout of the record's container. Here's how to achieve that effect using MooTools or jQuery.
The XHTML
Notice that we place the links into...
![Create Spinning, Fading Icons with CSS3 and MooTools]()
A goal of my latest blog redesign was to practice what I preached a bit more; add a bit more subtle flair. One of the ways I accomplished that was by using CSS3 animations to change the display of my profile icons (RSS, GitHub, etc.) I...