Add a key from stdin

tlmgr key

  • Manage GPG keys used to verify TeX Live databases.
    More information: <https://www.tug.org/texlive/tlmgr.html>.
  • Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

cat {{path/to/key.gpg}} | sudo tlmgr key add -

click the source code to copy install tlmgr key on any operating system with command-not-found.com