November 2012
Intermediate to advanced
888 pages
54h 46m
Polish
Content preview from Ruby. Receptury
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18.2. Instalacja i korzystanie z gemów
Problem
Chcemy zainstalować gem, a następnie wykorzystywać w programach udostępniany przez niego kod.
Rozwiązanie
Aby zainstalować najnowszą wersję gemu, należy skorzystać z polecenia gem install. Polecenie poszukuje w lokalnym systemie niezainstalowanego pliku gemu, a jeśli nie może go znaleźć, sprawdza źródło zewnętrzne (jeśli nie wprowadzi się innego adresu, jest nim serwis gems.rubyforge.org). Ponieważ polecenie gem install modyfikuje instalację języka Ruby w systemie, jego uruchomienie wymaga posiadania uprawnień superużytkownika.
$ gem install RedCloth Attempting local installation of 'RedCloth' Local gem file not found: RedCloth*.gem Attempting remote installation of 'RedCloth' Successfully ...
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