So, I recently upgraded my Ubuntu install to Edgy. One of the packages I have installed is php4-cli, which I use specifically for testing sample code. Well, when I went to run it, I found this little nasty popping up:

PHP Warning:  mime_magic: type regex            
BEGIN[[:space:]]*[{]    application/x-awk invalid in Unknown on line 0

Looks like there is a defect open with the debian folks, but it says to uncomment a line out in /usr/share/file/magic.mime. However, for Ubuntu, this should be commented out. The line that needs to be commented out is:

0      regex           BEGIN[[:space:]]*[{]    application/x-awk

Upon doing so, php will run on the CLI without producing the warning.