August 2012
Intermediate to advanced
624 pages
17h 11m
Polish
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15.11. Pobieranie danych z innego komputera
Problem
Działanie skryptu jest zależne od dostarczenia informacji z innego komputera. Przykładem może być konieczność sprawdzenia, czy w zdalnym systemie występuje określony plik lub czy działa pewien proces.
Rozwiązanie
Należy wykorzystać usługę SSH oraz mechanizm podstawienia wyniku polecenia. Konfiguracja usługi SSH powinna umożliwiać ustanawianie połączenia bez podawania hasła, tak jak to zostało opisane w „14.21. Wykorzystanie usługi SSH bez hasła”. Wykonywane polecenie powinno zostać przygotowane w taki sposób, aby wynikiem była dokładnie ta wartość, która jest potrzebna. Wówczas wystarczy zastosować zwykłą operację wstawienia wyniku polecenia.
#!/usr/bin/env bash # plik receptury: command_substitution ...
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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.