There’s the -d option to find duplicate lines too. I use this stuff all the time.
Martin Dellwo martin.dellwo@gmail.com On Jun 1, 2021, at 8:10 PM, Fred Stluka <fred@bristle.com> wrote:
Martin,Good tip! I've used uniq forever, but forgot about (or never knew)the -u option. Good stuff!--Fred------------------------------------------------------------------------Fred Stluka -- http://bristle.com -- Glad to be of service!Open Source: Without walls and fences, we need no Windows or Gates.------------------------------------------------------------------------On 5/27/21 8:53 PM, Martin Dellwo via plug wrote:If you know one list contains the other entirely, and neither has its own repetitions, ‘sort first second | uniq -u’ oughta work just fine.
Martin Dellwo
/martin.dellwo@gmail.com/
On May 27, 2021, at 8:29 PM, Walt Mankowski via plug <plug@lists.phillylinux.org> wrote:
I usually end up doing this in Perl or Python. The diff solution is
nice. If you're interested, I've attached a little Perl script I just
whipped up. It has the advantage of not requiring the lists to be
sorted.
Then I wrote a Python version, too. :)
Walt
On Thu, May 27, 2021 at 07:36:05PM -0400, Michael Lazin via plug wrote:
Awesome, thanks! Comm got the job done in a pinch but I am going to try
diff tomorrow morning. Thanks again for your help.
Sincerely,
Michael Lazin
On Thu, May 27, 2021, 6:01 PM Carlos M. Fernández <aremmes@gmail.com> wrote:
This has worked for me before:
diff -Nau first second | grep '^+'
This assumes that first and second are sorted.
On Thu, May 27, 2021, 17:37 Michael Lazin via plug <
plug@lists.phillylinux.org> wrote:
I used the sort command to make two lists. One list has everything on
the first list and more. They are already alphabetically sorted. I want
to know what is on the second list that is not on the first list. I am
trying to use diff but perhaps there is a better way. I tried awk and an
ugly egrep and now I am giving up and asking for help. Thanks for your
time.
Sincerely,
Michael Lazin
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<not_in_first.pl>
<not_in_first.py>
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