UNIX commands in Perform

Hi all! I am having some problems with users not inputting data correctly, and I would like to know who has input each row. I was hoping that I would be able to do this in perform, using something like: before add of "table name" let id = `whoami` If this was possible, it would put the user's unix id into a column, and I would immediately be able to track down any problems. Is there any way I can do this, bearing in mind I only have access to I-SQL v 4.10, an SE engine, SunOS 4.something and I don't do C !! TIA, Richard. ----------------------------------------------------------------- | _ /\\ | Richard Thomas | | \\ 0_ | r.thomas@csl.gov.uk | | \\ / | | | oo/ | "20 Regal and a four-pack, | | / \\ | I guess I'm set for the night" | | \\_/ | - "TV Tan" The Wildhearts | -----------------------------------------------------------------