Install on Linux could leave MANPATH incorrect
On Linux, the system default man path is used when MANPATH is not set, or when MANPATH starts or ends with ':' or contains '::' (that is, contains an empty substring). GemStone modifies the MANPATH during installation, to add $GEMSTONE/doc. However, if there was previously no MANPATH, GemStone incorrectly sets a default MANPATH that does not include ':' or '::', resulting in the system not being able to find man information.
manually reset the MANPATH