How do I check the md5 checksum of a file?

That does look fairly convenient. Just fyi, there are at least two options using "Terminal.app":<pre>md5 /path/tofile
openssl md5 /path/to/file</pre>I guess the first might by a small margin by the simpler of the two. In case you weren't aware, instead of typing the path to the file, Terminal.app will fill it in for you automatically if you type a space after the ' md5' and drag the file into the terminal window.

There is a command line command called md5 that gives you the checksum.

If you want to turn this into an application you can do so fairly easily with Automator. The items you should use are as follows:

1) Finder->Ask For Finder Items
2) Automator->Run Shell Script
Type "md5" in the box.
Change the "Pass input" value to "as arguments".
3) TextEdit->New Text File
Click on Options and select "Show Action when Run"

When you run this it should prompt you for a file to run md5 on and then prompt you for the filename of a text file in which to save the result.

G5 Mac OS X (10.4.9)

How about this Automator script?
<http://www.apple.com/downloads/macosx/automator/md5checksum.html>

bd