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3 Comandos Linux Livro Eletrônico Aula 00 Sistemas Operacionais p/ AL-BA (Analista Legislativo - TI) Pós-Edital Professor: Celson Carlos Martins Junior Aula Demonstrativa Celson Carlos Martins Junior Aula 00 ESCLARECIMENTOS INICIAIS .......................................................................................................................................... 3 1 – INTRODUÇÃO .............................................................................................................................................................. 5 1.1 COMMUNITY ENTERPRISE OPERATING SYSTEM ........................................................................................... 6 1.2 RED HAT ENTERPRISE LINUX ......................................................................................................................... 8 1.3 INSTALAÇÃO CENTOS ................................................................................................................................... 10 1.4 GERENCIADOR INICIALIZAÇÃO .................................................................................................................... 17 1.5 SISTEMAS DE ARQUIVOS ................................................................................................................................ 18 1.6 SISTEMAS RAID ............................................................................................................................................. 20 1.7 RESOLUÇÃO DE QUESTÕES ........................................................................................................................... 22 2 – CONCEITOS COMUNS ............................................................................................................................................... 26 2.1 LINUX STANDARD BASE ................................................................................................................................. 26 2.2 KERNEL LINUX ............................................................................................................................................... 26 2.3 INTERFACE GRÁFICA ..................................................................................................................................... 30 2.4 SHELL LINUX .................................................................................................................................................. 31 2.5 TERMINAL LINUX........................................................................................................................................... 33 2.6 RESOLUÇÃO DE QUESTÕES ........................................................................................................................... 33 3 – COMANDOS LINUX ................................................................................................................................................... 39 3.1 COMANDOS DE LINHA ......................................................................................................................................... 39 3.2 NAVEGAÇÃO EM DIRETÓRIOS ............................................................................................................................ 40 3.2 MANIPULAÇÃO DE ARQUIVOS ............................................................................................................................ 42 3.3 GERENCIAMENTO DE REDE ................................................................................................................................ 47 3.4 SERVIÇOS DE REDE ............................................................................................................................................. 47 3.5 INTEGRAÇÃO ....................................................................................................................................................... 53 3.6 GERENCIAMENTO DE PROCESSOS ...................................................................................................................... 54 3.7 RESOLUÇÃO DE QUESTÕES ................................................................................................................................. 56 4 – GERENCIAMENTO ..................................................................................................................................................... 76 4.1 RUNLEVEL E SYSTEMD ....................................................................................................................................... 76 4.2 PROCESSOS LINUX .............................................................................................................................................. 77 4.3 VMSTAT ................................................................................................................................................................ 79 4.4 DAEMONS ............................................................................................................................................................. 80 4.5 GERENCIADOR DE PACOTES YUM ...................................................................................................................... 81 4.6 GERENCIAMENTO DE USUÁRIOS ........................................................................................................................ 83 4.7 GERENCIAMENTO DE DISPOSITIVOS .................................................................................................................. 87 4.8 RESOLUÇÃO DE QUESTÕES ................................................................................................................................. 91 5 – ESTRUTURA DE DIRETÓRIOS E SISTEMA DE ARQUIVOS ..................................................................................... 109 5.1 PARTIÇÕES LINUX ............................................................................................................................................. 111 5.2 PERMISSÕES LINUX ........................................................................................................................................... 112 Sistemas Operacionais p/ AL-BA (Analista Legislativo - TI) Pós-Edital www.estrategiaconcursos.com.brInserir aqui o nome do Curso 1 www.estrategiaconcursos.com.br 151 Aula Demonstrativa0 Celson Carlos Martins Junior Aula 00 5.3 SISTEMAS DE ARQUIVOS LINUX ....................................................................................................................... 115 5.4 JOURNALING ...................................................................................................................................................... 117 5.4 LOGICAL VOLUM MANAGER ............................................................................................................................ 124 5.5 RESOLUÇÃO DE QUESTÕES ............................................................................................................................... 126 6.0 Gabarito ............................................................................................................................................................... 150 Sistemas Operacionais p/ AL-BA (Analista Legislativo - TI) Pós-Edital www.estrategiaconcursos.com.br 2 Aula Demonstrativa0 Celson Carlos Martins Junior Aula 00 ESCLARECIMENTOS INICIAIS Pessoal, o objetivo desta aula é entendermos os conceitos e noções básicas de administração do sistema operacional Linux CentOS. Se este assunto foi previsto em seu edital, seu entendimento é essencial. Nessa aula, resolveremos várias questões, incluindo questões recentes da banca sobre o tópico desta aula. Antes de iniciar nosso assunto propriamente dito, precisamos esclarecer alguns pontos. Nossa abordagem será descritiva, ou seja, iremos conhecer o Linux descrevendo suas principais funcionalidades e características, sempre recorrendo às questões de concursos para nos balizar. E qual a razão desta abordagem descritiva? É a predominante nas questões,ok? Predominantemente, observamos que o examinador apresenta o texto com a descrição de algum aspecto e nos indaga sobre sua correção ou não, ou nos apresenta um conceito e indaga qual a descrição correta entre várias alternativas. Percebeu? Além de entender as noções básicas, um dos nossos objetivos é auxiliá-los a identificar o Atenção, como não há questões suficientes de apenas uma banca para cobrir todos os tópicos previstos no edital, iremos nos valer de questões de diversas bancas. Para facilitar nossa vida, no decorrer do texto, os conceitos preferidos da banca foram acompanhados com um dos logos do Estratégia abaixo: Nosso roteiro de estudo, com foco nas características principais, iremos abordar: suas funções principais, gerenciamento; sistemas de arquivos; comandos de linha. Sistemas Operacionais p/ AL-BA (Analista Legislativo - TI) Pós-Edital www.estrategiaconcursos.com.br 3 Aula Demonstrativa0 Celson Carlos Martins Junior Aula 00 Um ponto de ressalva, é que os editais ao estabelecerem especificamente a distribuição Linux CentOS, podem também abordar aspectos comuns às várias distribuições Linux. Atenção!!! Em função disto, resolveremos questões específicas sobre CentOS, sobre a distribuição-mãe Red Hat, e também questões sobre comandos Linux genéricos. Esta é uma clara possibilidade de abordagem do examinador. Se ocorrer, não haverá contrariedade alguma ao edital. Basearemos os tópicos específicos sobre CentOS no site da distribuição, e em materiais de elaboração da própria fabricante. Precisamos destacar que são valiosas fontes de auxílio as páginas de
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