dnf-reposync: add page

pages/linux/dnf-reposync.md

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+# dnf reposync
+
+> Synchronize packages and metadata of a remote DNF repository to a local directory.
+> Not default to `dnf` but supported via `dnf-plugins-core`.
+> See also: `dnf`.
+> More information: <https://dnf-plugins-core.readthedocs.io/en/latest/reposync.html>.
+
+- Synchronize all packages from the repository with id `repo_name` to a subdirectory `repo_name` of the current working directory:
+
+`dnf reposync --repoid {{repo_name}}`
+
+- Synchronize all packages and define a custom save location:
+
+`dnf reposync --repoid {{repo_name}} {{[-p|--download-path]}} {{path/to/directory}}`
+
+- Synchronize all packages and metadata:
+
+`dnf reposync --repoid {{repo_name}} --download-metadata`
+
+- Download only newest packages per-repo:
+
+`dnf reposync --repoid {{repo_name}} {{[-n|--newest-only]}}`
+
+- Just print URLs of what would be downloaded, don’t download:
+
+`dnf reposync --repoid {{repo_name}} {{[-u|--urls]}}`
+
+- Try to set the timestamps of the downloaded files to those on the remote side:
+
+`dnf reposync --repoid {{repo_name}} --remote-time`