interesting. what does your script do exactly. just curious.

i don't think using a FIFO to do this is a good idea. think about what a FIFO is: first in first out. try stepping through the reading and writing between the two processes on paper and be sure to draw your FIFO for each step. there is going to be some horrible unavoidable deadlock here. its just not possible with a fifo, unless you are also the author of the browser.

i'd try something else. do a diff on the bookmarks file. i don't know... there's gotta be a better way than that though.

if you give more context to what you are trying to do, maybe i could give a better suggestion.