August 2012
Intermediate to advanced
624 pages
17h 11m
Polish
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7.4. Wyszukiwanie ciągu tekstowego niezależnie od wielkości liter
Problem
Chcemy wyszukać w pliku dziennika określone komunikaty (np. error). Aby mieć pewność, że zostaną wyodrębnione wszystkie tego typu informacje, podczas przeszukiwania pliku nie powinna być uwzględniana wielkość liter.
Rozwiązanie
Dodanie do polecenia grep opcji –i powoduje zignorowanie informacji o wielkości liter.
$ grep –i error plik.dziennikaAnaliza
W operacji wyszukiwania bez uwzględniania wielkości liter za dopasowane zostaną uznane ciągi o treści ERROR, error, Error, a także wszystkie inne ich warianty, jak ErrOr lub eRrOr. Opisana opcja jest szczególnie użyteczna w analizowaniu dokumentów, które mogą zawierać tekst o różnej wielkości znaków — na przykład gdy wyszukiwane ...
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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.