August 2012
Intermediate to advanced
624 pages
17h 11m
Polish
Content preview from Bash. RecepturyBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
3.3. Wyeliminowanie nietypowego działania osadzonych dokumentów
Problem
Skrypt zawierający osadzony dokument działa niezgodnie z przewidywaniami. Opisana wcześniej metoda przygotowania książki telefonicznej została wykorzystana do sporządzenia listy darczyńców. Utworzony został więc plik o nazwie wpłaty i następującej treści:
$ cat wpłaty
#
# Wyszukiwanie darczyncow
#
grep $1 <<EOF
#imie wpłata
Michał $100
Jan $200
Ala $ 25
Piotr $ 9
EOF
$Skrypt nie wyświetla jednak poprawnego wyniku:
$ ./wpłaty Ala Michał Ala00 Ala $ 25 $ ./wpłaty Michał Michał Michał00 $
Rozwiązanie
Należy wyłączyć wykonywanie skryptu w osadzonym dokumencie przez zastosowanie symboli specjalnych w odniesieniu do jednego lub wszystkich znaków ogranicznika.
# rozwiązanie grep $1 <<\EOF ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.