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O apt-get install com '-' (menos / hífen) remove os pacotes
Eu estava procurando por algum pacote ( nautilus-terminal) e acidentalmente fiz isso: $ sudo apt-get install nautilus- Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: apturl apturl-common libgail-3-0 linux-headers-4.4.0-57 linux-headers-4.4.0-57-generic linux-image-4.4.0-57-generic linux-image-extra-4.4.0-57-generic Use 'sudo apt autoremove' …