Manage backups of TeX Live packages. The default backup directory is specified by the
backupdiroption, and can be obtained withtlmgr option. More information: https://www.tug.org/texlive/doc/tlmgr.html#backup.
tlmgr backup {{package1 package2 ...}}
tlmgr backup --all
tlmgr backup {{package}} --backupdir {{path/to/backup_directory}}
tlmgr backup clean {{package1 package2 ...}}
tlmgr backup clean --all