apt查看命令由哪个包提供

用apt-file查看。

sudo apt install apt-file
sudo apt-file update

搜索javac是由哪个包提供的：

apt-file search -x "javac$"

其中-x表示使用正则表达式。输出：

bash-completion: /usr/share/bash-completion/completions/javac
openjdk-11-jdk-headless: /usr/lib/jvm/java-11-openjdk-amd64/bin/javac
openjdk-8-jdk-headless: /usr/lib/jvm/java-8-openjdk-amd64/bin/javac

来源：https://www.cyberciti.biz/faq/equivalent-of-rpm-qf-command/