August 2012
Intermediate to advanced
624 pages
17h 11m
Polish
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2.15. Łączenie dwóch programów przez wykorzystanie danych wyjściowych jako wejściowych
Problem
Chcemy wykorzystać dane wyjściowe jednego programu jako dane wejściowe dla drugiego programu.
Rozwiązanie
Można skierować strumień wyjściowy jednego programu do tymczasowego pliku, a następnie wykorzystać ten plik jako dane wejściowe dla drugiego programu:
$ cat pierwszy.plik drugi.plik > /tmp/cat.txt $ sort < /tmp/cat.txt ... $ rm /tmp/cat.txt
Można również wykonać tę operację w jednym kroku, przekazując bezpośrednio dane wyjściowe do następnego programu. Za połączenie odpowiada w takich przypadkach operator potoku (|). Oto przykład:
$ cat pierwszy.plik drugi.plik | sortOczywiście, istnieje również możliwość sekwencyjnego złączenia kilku poleceń z wykorzystaniem ...
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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.
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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.