tlmgr-update
Update TeX Live packages.
TLDR
Update all TeX Live packages
$ sudo tlmgr update --all
Update tlmgr itself
$ sudo tlmgr update --self
Update a specific package
$ sudo tlmgr update [package]
Update all except a specific package
$ sudo tlmgr update --all --exclude [package]
Update all packages, making a backup of the current packages
$ sudo tlmgr update --all --backup
Update a specific package without updating its dependencies
$ sudo tlmgr update --no-depends [package]
Simulate updating all packages without making any changes
$ sudo tlmgr update --all --dry-run