Incoming from s. keeling:
> Incoming from Nick W:
> >
> > ps -e | awk '$4 ~ /xmms/ {print $1 | "echo"}'
> >
> > echos a blank line, but no error.
>
> Compare this:
>
> ps -e | awk 'BEGIN {ORS=" "} $4 ~ /xmms/ {print $1"\n" ; echo "$1\n"}'
>
> >From that I get the process number on a line by itself. Where is the
> "print $1" going? Standard output? Where's echo's $1 coming from;
> print or awk?
Change that "print $1" to "print $1 * 2" and you'll see the echo is
just swallowed, the "print" is what's producing output, and changing
the ";" to an "|" swallows everything.
--
Any technology distinguishable from magic is insufficiently advanced.
(*) http://www.spots.ab.ca/~keeling
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