[CALUG] Best programming app

[Josiah Ritchie]

On 11/22/05, Jim Bauer <jfbauer at comcast.net> wrote:
> Try something like this...
>
> $ diff <(sort first.csv) <(sort second.csv) | egrep '(^>|^<)' | sort > diffs
>
> For the <(cmd) syntax see 'Process Substitution' in the bash manpage.
> Basically the <(cmd) will be replaced with a file name that diff will
> see.  The output from the cmd will be written to that file (a pipe).
>
> To see what is going on try these.
>
> $ echo <(date)
> /dev/fd/63
> $ cat <(date)
> Tue Nov 22 20:36:43 EST 2005

Thanks Jim. That's great! I always enjoy these type of discussions. It
brings these types of powerful little tools into view.

I notice you're using egrep instead of grep. I need to get used to
thinking of that also.

JSR/