Re: Simple feature request for grep

[Bruno Haible]

Ben Tilly wrote:
> If the -r option has been specified but no directories or files are specified,
> please print a warning to STDERR.
>
> That would save me (and presumably other people) much time spent
> waiting for greps that are in turn waiting for me.

The problem also exists when the -r option is not specified. But in
that case, grep cannot print a warning to stderr since it is common
use of grep to read its input from stdin.

Your problem can be lessened by either
  - listening to your harddisk, or
  - having a "cpu meter" on your desktop that you watch while waiting
    for the machine.

Bruno