I was going through a few old notes and thought I'd post this. It's something that was always useful during the undergraduate labs at the University of Birmingham. In IRAF go: onedspec > wspectext. You should change the parameters using wspectext, we always found that using header=no and wformat=%0.2f the most useful.
For more information on IRAF including a manual that I wrote a while back see [the UoB obsering laboratory pages].
