I'm using Troi file plug in to get a list of mounted disks in the field disks, i would like a script to do something if the field disks contains "job" and something other if the field not containing "job".

Use the Position or PatternCount function to see if a field contains a particular string of text.

what if the list of mounted disks also contains "job1" and "job2" etc.

I have a field that contains the text (job), is there a way of saying that if the list of mounted disks contains the same text as in the field ?

Try:

not IsEmpty ( FilterValues ( item ; list ) )

This assumes the list is return-separated.