On Mon, 2006-10-09 at 13:12 +0100, Dave Mitchell wrote: > On Mon, Oct 09, 2006 at 12:43:22PM +0100, Dan Track wrote: > > have a script that does the following: > > > > cat /tmp/file | while read rpm > > > > what I would like to do is to remove the "|" pipe command but keep the > > "while read rpm" part while also somehow cat the contents of the file > > into the "while read rpm" line, how can I do that? > > ( > while read rpm; do > ... > done > ) < /tmp/file > actually, the simplest way to do this is: while read rpm do ... done < /tmp/file [where you put the do clause makes no difference -- it's just style.] the parens dave used force the whole thing to be done in a subshell -- a new process. if you're doing this once a day, it makes little difference. but if you're going to be running this piece of code a bunch, then extra processes may make a significant difference over time. john -- cleverly disguised as a responsible adult.
