tk info viewer
export INFOPATH=/usr/share/info:/export/pkg/info:/usr/bin/info:/usr/local/share/info
$ export INFOPATH=/export/pkg/info:/usr/bin/info:/usr/local/share/info:/usr/share/info
$ tkinfo &
will bring up /export/pkg/info/dir as the top page
$tkinfo grep &
can find the grep info page
after setting the above INFOPATH, there are still some rudimentary command info not found.
$ evs INFOPATH INFOPATH='/usr/share/info:/export/pkg/info:/usr/bin/info:/usr/local/share/info'
$ tkinfo sort &
— info file not found
give up tkinfo, and use ess to browse info. Emacs provides more functionality. Or even use the text based info command.