uzip

I have an geom_uzip image and what I'm confused about is the following. The first few lines of the image file are as follows: #!/bin/sh #V2.0 Format m=geom_uzip (kldstat -m $m 2>&-||kldload $m)>&-&&mount_cd9660 /dev/`mdconfig -af $0`.uzip $1 exit $? But when I try to execute them manually they...