April 2025
Intermediate to advanced
248 pages
7h 6m
Portuguese (Portugal, Brazil)
Content preview from Administração prática de sistemas Linux
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Capítulo 10. Criação de scripts e automação
Este trabalho foi traduzido com recurso a IA. Agradecemos o teu feedback e comentários: translation-feedback@oreilly.com
Os administradores de sistemas automatizam o que podem. Mas não podes automatizar tudo. A automação é uma coisa boa, mas tem suas limitações. Neste capítulo, discuto os prós e os contras da automação. Algumas tarefas são difíceis de automatizar porque envolvem muitas variáveis. E a automação traz alguns riscos de segurança, pois automatizar tarefas que exigem privilégios elevados cria brechas de segurança que podem levar ao comprometimento do sistema. Outros obstáculos à automatização incluem o tempo e o desvio temporal, a falha do sistema, as condições de erro do script e as interações humanas.
Criar scripts e automatizar tarefas é um desafio e divertido. É gratificante ver uma série de scripts e agendas a funcionar como planeado para imitar as teclas, decisões e atividades humanas. Todos os administradores de sistemas devem saber como criar scripts shell básicos e devem automatizar todas as tarefas repetitivas possíveis e sem privilégios. Este capítulo cobre os conceitos de scripting e automação, mas não a mecânica de baixo nível do scripting (loops, E/S de arquivos, etc.), que estão bem documentados na web.
Responde à pergunta: Porquê automatizar?
Alguns administradores de sistemas me perguntaram por que deveriam automatizar alguma coisa. A resposta é simples: para que te possas concentrar em tarefas de nível superior ...
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