Re: GREP -v in a loop

[Paul Jarc]

"Andrew Barton" <address@hidden> wrote:
>       outname=$i
>       grep -v Time $i | grep -v DATE | grep -v Location | grep -v Units |
> grep -v Depth > $outname

Don't write to your input file.  The file is truncated around the same
time that the first grep opens and reads from it, so there's no
guarantee that it will see anything at all.  Write to a temporary
file.
  outname="$i.out"
  rm -f "$outname"
  grep -v Time "$i" ... > "$outname"
  mv -f "$outname" "$i"


paul