NAME
update-catalog – create or update entry in SGML catalog fileSYNOPSIS
update-catalog [options] –add centralized_catalog ordinary_catalogupdate-catalog [options] –remove centralized_catalog ordinary_catalog
update-catalog [options] –update-super
DESCRIPTION
update-catalog inserts, updates or removes entries in the SGML centralized catalogs located in /etc/sgml. To change the SGML super catalog located in /etc/sgml/catalog modify the directory contents of /etc/sgml to contain new files or symbolic links having a .cat extension or remove (or move) existing centralized catalogs and regenerate the super catalog using the –update-super option. See section SUPER CATALOG for details on the generation process.
OPTIONS
- –add
- Adds an entry for the ordinary_catalog in the centralized_catalog.
- –remove
- Removes the entry for the ordinary_catalog from the centralized_catalog.
- –update-super
- Regenerates the SGML super catalog from the contents of the /etc/sgml directory. See section SUPER CATALOG for details on the super catalog generation.
- –quiet
- Prevents the usual diagnostic output.
- –test
- Prevents the update of the catalog and writes the resulting SGML catalog to standard output.
- –version
- Displays the version information and exits.
- –help
- Display the usage information and exits.
SUPER CATALOG
The super-catalog located in /etc/sgml/catalog cannot be directly modified. It is generated by the update-catalog –update-super command. The generation considers files in the /etc/sgml directory that have a .cat extension. For instance files ending in .old or .disabled are not considered. Before adding a catalog to the super catalog it is parsed and verified in order to not corrupt the super catalog. All referenced catalogs are verified to actually exist. If the check fails, a message is printed and the complete catalog is ignored. This check ensures that a catalog from a package, which is removed but not purged, is removed from the super catalog.
Willie has over 15 years of experience in Linux system administration and DevOps. After managing infrastructure for startups and enterprises alike, he founded Command Linux to share the practical knowledge he wished he had when starting out. He oversees content strategy and contributes guides on server management, automation, and security.