This Gist provides a script that updates host aliases in the /etc/hosts file based on comments following the pattern # alias ${sourcehostname}=${targethostname}. It ensures that entries for the specified source hostnames are updated with the correct IP addresses for their corresponding target hostnames.
- Automatically updates
/etc/hostsbased on alias comments. - Resolves IP addresses using DNS if not found in
/etc/hosts. - Supports a dry-run option to preview changes before applying them.