August 2012
Intermediate to advanced
624 pages
17h 11m
Polish
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13.4. Zapisywanie danych wynikowych w tablicy
Problem
Chcemy umieścić dane wynikowe pewnego programu lub skryptu w tablicy.
Rozwiązanie
#!/usr/bin/env bash
# plik receptury: parseViaArray
#
# ustalenie rozmiaru pliku
# wykorzystanie tablicy do rozbicia wyniku polecenia ls -l na poszczególne słowa
LSL=$(ls -ld $1)
declare -a MYRA
MYRA=($LSL)
echo rozmiar pliku $1 to ${MYRA[4]} bajtów.Analiza
W prezentowanym przykładzie wynik wykonania polecenia ls –l jest dzielony na słowa przez umieszczenie danych w tablicy. Aby pobrać określone słowo, wystarczy wówczas odwołać się do określonego elementu tablicy. Listing wynikowy polecenia ls –l ma zazwyczaj następującą składnię (sposób prezentacji może się nieznacznie różnić w zależności od wersji lokalizacyjnej ...
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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.