fedora-docs-l10n/fedora-system-administrat/f26/pages/package-management/DNF — Portuguese (Brazil) @ Fedora Weblate: Secure package management with GPG-signed packages

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	English	Portuguese (Brazil)	Actions
	DNF	DNF
	[application]DNF is the {OSORG} package manager that is able to query for information about packages, fetch packages from repositories, install and uninstall packages using automatic dependency resolution, and update an entire system to the latest available packages. DNF performs automatic dependency resolution on packages you are updating, installing or removing, and thus is able to automatically determine, fetch and install all available dependent packages. DNF can be configured with new, additional repositories, or _package sources_, and also provides many plug-ins which enhance and extend its capabilities. DNF is able to perform many of the same tasks that [application]RPM can; additionally, many of the command line options are similar. DNF enables easy and simple package management on a single machine or on groups of them.	[application]DNF é o gerenciador de pacotes do {OSORG} capaz de consultar informações sobre pacotes, obter pacotes de repositórios, instalar e desinstalar pacotes usando resolução automática de dependências, e atualizar todo o sistema para os pacotes mais recentes disponíveis. O DNF realiza resolução automática de dependências nos pacotes que você está atualizando, instalando ou removendo, e, portanto, é capaz de determinar, obter e instalar automaticamente todos os pacotes dependentes disponíveis. O DNF pode ser configurado com novos repositórios adicionais, ou _fontes de pacotes_, e também fornece muitos plug-ins que aprimoram e estendem suas capacidades. O DNF é capaz de realizar muitas das mesmas tarefas que o [application]RPM pode; além disso, muitas das opções de linha de comando são semelhantes. O DNF permite o gerenciamento fácil e simples de pacotes em uma única máquina ou em grupos delas.
	Secure package management with GPG-signed packages	Gerenciamento seguro de pacotes com pacotes assinados por GPG
	DNF provides secure package management by enabling GPG (Gnu Privacy Guard; also known as GnuPG) signature verification on GPG-signed packages to be turned on for all package repositories (package sources), or for individual repositories. When signature verification is enabled, DNF will refuse to install any packages not GPG-signed with the correct key for that repository. This means that you can trust that the [application]RPM packages you download and install on your system are from a trusted source, such as {OSORG}, and were not modified during transfer. See xref:DNF.adoc#sec-Configuring_DNF_and_DNF_Repositories[Configuring DNF and DNF Repositories] for details on enabling signature-checking with DNF, or xref:../RPM.adoc#s1-check-rpm-sig[Checking Package Signatures] for information on working with and verifying GPG-signed [application]RPM packages in general.
	DNF also enables you to easily set up your own repositories of [application]RPM packages for download and installation on other machines.	O DNF também permite configurar facilmente seus próprios repositórios de pacotes [application]RPM para download e instalação em outras máquinas.
	Learning DNF is a worthwhile investment because it is often the fastest way to perform system administration tasks, and it provides capabilities beyond those provided by the [application]PackageKit graphical package management tools.	Aprender o DNF é um investimento que vale a pena, pois frequentemente é a forma mais rápida de realizar tarefas de administração do sistema e oferece capacidades além das fornecidas pelas ferramentas gráficas de gerenciamento de pacotes do [application]PackageKit.
	DNF and superuser privileges	DNF e privilégios de superusuário
	You must have superuser privileges in order to use the [command]#dnf# command to install, update or remove packages on your system. All examples in this chapter assume that you have already obtained superuser privileges by using either the [command]#su# or [command]#sudo# command.	Você precisa ter privilégios de superusuário para usar o comando [command]#dnf# para instalar, atualizar ou remover pacotes no seu sistema. Todos os exemplos neste capítulo pressupõem que você já obteve privilégios de superusuário usando o comando [command]#su# ou [command]#sudo#.
	Checking For and Updating Packages	Verificando e Atualizando Pacotes
	Checking For Updates	Verificando por Atualizações
	indexterm:[DNF Updates,checking for updates] The quickest way to check for updates is to attempt to install any available updates by using the [command]#dnf upgrade# command as follows:
	~]# dnf upgrade Last metadata expiration check performed 1:24:32 ago on Thu May 14 23:23:51 2015. Dependencies resolved. Nothing to do. Complete!	~]# dnf upgrade Last metadata expiration check performed 1:24:32 ago on Thu May 14 23:23:51 2015. Dependencies resolved. Nothing to do. Complete!
	Note that [command]#dnf upgrade# installs only those updates that can be installed. If a package cannot be updated, because of dependency problems for example, it is skipped.	Note que o [command]#dnf upgrade# instala apenas as atualizações que podem ser instaladas. Se um pacote não puder ser atualizado, por problemas de dependência, por exemplo, ele será ignorado.
	The [command]#dnf check-update# command can be used see which installed packages on your system have new versions available, however it does not mean that they can be successfully installed. This command is therefore mostly useful in scripts and for checking for updated packages that were not installed after running [command]#dnf upgrade#.	O comando [command]#dnf check-update# pode ser usado para ver quais pacotes instalados no seu sistema possuem novas versões disponíveis, no entanto, isso não significa que eles podem ser instalados com sucesso. Portanto, esse comando é principalmente útil em scripts e para verificar pacotes atualizados que não foram instalados após executar [command]#dnf upgrade#.
	For example:	Por exemplo:
	~]# dnf check-update Using metadata from Mon Apr 20 16:34:10 2015 (2:42:10 hours old)	~]# dnf check-update Using metadata from Mon Apr 20 16:34:10 2015 (2:42:10 hours old)
	python.x86_64 2.7.9-6.fc22 updates python-cryptography.x86_64 0.8.2-1.fc22 updates python-libs.x86_64 2.7.9-6.fc22 updates	python.x86_64 2.7.9-6.fc22 updates python-cryptography.x86_64 0.8.2-1.fc22 updates python-libs.x86_64 2.7.9-6.fc22 updates
	The packages in the above output are listed as having updated versions. The line in the example output tells us:	Os pacotes na saída acima estão listados como tendo versões atualizadas. A linha no exemplo de saída nos diz:

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