POSTIN
/bin/sh
update-alternatives --install /usr/bin/xvt xvt /usr/bin/xterm 18 || :
POSTUN
/bin/sh
[[ "$1" = "0" ]] && update-alternatives --remove xvt /usr/bin/xterm || :
/bin/sh
update-alternatives --install /usr/bin/xvt xvt /usr/bin/xterm 18 || :
/bin/sh
[[ "$1" = "0" ]] && update-alternatives --remove xvt /usr/bin/xterm || :