אורי wrote on Tue, 14 Dec 2021 07:44 +00:00: > Actually I prefer the "<(..)" method, because sometimes I want to compare 2 > commands: > > diff <(pip freeze | sort) <(cat requirements.txt | sort) >
Consider s/diff/comm -12/. > Or even use cat and echo to add a specific line to one of the outputs. If I > want the result to be completely null. For example to run in crontab and > send me mail whether it's not null. Careful here. By default, cron jobs run not under your login shell but under /bin/sh, and it's possible the latter doesn't support «<(…)» even if the former does. Cheers, Daniel > אורי > u...@speedy.net > > > On Tue, Dec 14, 2021 at 9:31 AM Eli Marmor <e...@netmask.it> wrote: > >> Use "-" instead the file name of one of both of the files, and pipe your >> output to the diff command. >> >> On Tue, 14 Dec 2021 at 09:12, אורי <u...@speedy.net> wrote: >> >>> Thank you. >>> >>> אורי >>> u...@speedy.net >>> _______________________________________________ >>> Linux-il mailing list >>> Linux-il@cs.huji.ac.il >>> http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il >>> >> > > _______________________________________________ > Linux-il mailing list > Linux-il@cs.huji.ac.il > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
