August 2012
Intermediate to advanced
624 pages
17h 11m
Polish
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7.2. Wyświetlenie jedynie nazwy pliku zawierającego poszukiwany ciąg tekstowy
Problem
Chcemy odszukać pliki, w których występuje określony ciąg tekstowy. Jednak na ekranie nie powinny być wyświetlane całe wiersze znalezionego tekstu, ale jedynie nazwy plików, w których poszukiwany tekst występuje.
Rozwiązanie
Same nazwy plików są wyświetlane po dodaniu do polecenia grep opcji –l.
$ grep –l printf *.c
bin2c.c
binoffset.c
conmakehash.cAnaliza
Jeśli program grep znajdzie więcej niż jedno wystąpienie określonego ciągu w pliku, wyświetli nazwę tego pliku tylko jeden raz. Jeżeli w przeszukiwanym pliku nie ma podanej frazy, nazwa pliku nie występuje na listingu wynikowym.
Opisywana opcja jest niezwykle użyteczna, gdy trzeba przygotować listę plików do dalszego ...
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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.