# apx > Package management utility. > Install packages inside managed containers from multiple sources (`apx` supports --aur,--dnf, --apk flags in all commands). > More information: . - Initialize or reinitialize a specific container: `apx init` - Install specific packages in the container: `apx install {{package1 package2 ...}}` - Install a DEB/RPM package inside the container (Use `--dnf` flag for installing RPMs): `apx install --sideload {{path/to/package}}` - Remove specific packages from the container: `apx remove {{package1 package2 ...}}` - Search for specific packages: `apx search {{package1 package2 ...}}` - Enter the managed container shell to execute commands (type `exit` to exit the container): `apx enter` - Update the list of available packages in the container: `apx update` - Upgrade all installed packages in the container to their newest available version: `apx upgrade`