Re: best practices for grep -f?

[Reuben Thomas]

On Thu, 4 Dec 2008, ONYTZ wrote:

> I wonder if this is enough to assume that grep has trouble with too many
> arguments read in from a file?

More likely your patterns aren't all different, so when you split them up 
some match twice, whereas if you supply redundant patterns to a single 
invocation of grep they only match once:

$ echo the | grep the
the
$ echo the | grep -e the -e the
the