$ sudo tlmgr remove collection-kotex
$ sudo tlmgr repository remove kotex
$ sudo rm -f /usr/local/texlive/texmf-local/tlpkg/pinning.txt
KTUG 한국 텍 사용자 그룹
$ sudo tlmgr remove collection-kotex
$ sudo tlmgr repository remove kotex
$ sudo rm -f /usr/local/texlive/texmf-local/tlpkg/pinning.txt