In Mom there is no rule or something to monitor or read for a word from a file. This can be acheived only through using the scripts manually.
let me know if the size of the file increases everyday or will it be of same size? Is the process you specified will append the data to your existing file or creates new every time?
If it appends then you need to write a script to search for a text that you want to monitor in the file and put the value in the mom stream to generate an alert or an event.
Thanks,
Sarav