Re: output of parallel pipe to another grep

[Ole Tange]

On Thu, Apr 20, 2017 at 3:24 AM, Asif Iqbal <vadud3@gmail.com> wrote:
> Hi I have multiple compressed files that I need to run grep against.
>
> I am trying to find 'foo', 'bar' and '192.168.1.100' against all the
> compressed log files.
>
> This will work?
>
> ls 201612*.gz | parallel zgrep foo {} | grep bar | grep 192.168.1.100

Yes. It may be faster to move all the greps into parallel:

ls 201612*.gz | parallel 'zgrep foo {} | grep bar | grep 192.168.1.100'

> Thanks for such an awsome tool!

If you like GNU parallel:

* (Re-)walk through the tutorial if you have not done so in the past
year (http://www.gnu.org/software/parallel/parallel_tutorial.html)
* Give a demo at your local user group/your team/your colleagues
* Post the intro videos and the tutorial on Reddit, Diaspora*, forums,
blogs, Identi.ca, Google+, Twitter, Facebook, Linkedin, and mailing
lists
* Request or write a review for your favourite blog or magazine
(especially if you do something cool with GNU parallel)
* Invite me for your next conference

If you use GNU parallel for research:

* Please cite GNU parallel in you publications (use --citation)

If GNU parallel saves you money:

* (Have your company) donate to FSF or become a member
https://my.fsf.org/donate/


/Ole