August 2012
Intermediate to advanced
624 pages
17h 11m
Polish
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2.18. Wielokrotne przekierowania w jednym wierszu
Problem
Chcemy przekierować dane wyjściowe w kilka różnych miejsc.
Rozwiązanie
Należy zastosować mechanizm przekierowania, wymieniając wszystkie pliki, które powinny zostać wykorzystane. Oto przykład:
$ przekazanie 3>pierwszy.plik 4>drugi.plik 5>piąty.plik 6>kolejny.plik
$Nazwa przekazanie odpowiada skryptowi powłoki zawierającemu polecenia, których wyniki mają zostać przekierowane w różne miejsca. W treści skryptu można zawrzeć instrukcje typu echo opcja $OPTSTR >&5. Skrypt będzie wówczas kierował dane wyjściowe do plików o różnych deskryptorach, dzięki czemu program wywołujący może przekazać dane do różnych miejsc.
Gdyby skrypt przekazanie był programem wykonywalnym języka C, mógłby przekazywać dane ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.