August 2012
Intermediate to advanced
624 pages
17h 11m
Polish
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8.8. Sprawdzenie docelowego katalogu dla plików archiwum
Problem
Chcemy rozpakować pliki archiwum, ale najpierw chcielibyśmy się dowiedzieć, w jakim katalogu zostaną zapisane. Co prawda zawartość archiwum można sprawdzić za pomocą polecenia tar –t, ale generowany listing jest tak długi, że można przeoczyć istotne jego elementy.
Rozwiązanie
Odpowiednio przygotowany skrypt awk pozwala na wyodrębnienie nazw katalogów z listy elementów składowych archiwum. Przekazanie listy nazw katalogów do polecenia sort –u spowoduje wyświetlenie jedynie niepowtarzających się pozycji.
$ tar tf archiwum.tar | awk –F/ '{print $1}' | sort –uAnaliza
Opcja t odpowiada za generowanie listy plików i katalogów wchodzących w skład archiwum wskazanego za pomocą opcji f. Aby zdefiniować ...
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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.