August 2012
Intermediate to advanced
624 pages
17h 11m
Polish
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16.1. Opcje startowe powłoki bash
Problem
Chcemy poznać opcje startowe powłoki bash, ale polecenie bash --help nie dostarcza użytecznych informacji.
Rozwiązanie
Poza instrukcją bash --help można wykorzystać polecenia bash –c "help set" oraz bash –c help, a jeśli powłoka jest uruchomiona, to również help set i help.
Analiza
Interpreter bash czasami umożliwia zdefiniowanie tej samej opcji na kilka różnych sposobów, a omawiany problem jest doskonałym tego przykładem. Daną opcję można włączyć podczas uruchamiania powłoki (np. bash –x), a później (w czasie pracy interaktywnej) wyłączyć za pomocą instrukcji set +x.
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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.
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.