You might need to define
a special environment variable, SAS_ALT_DISPLAY, because some server
features require a valid X Windows System graphics display. This environment
variable will be used to locate a graphics display when the value
of the environment variable commonly used by the X Window System,
DISPLAY, has not been set. The value of SAS_ALT_DISPLAY must refer
to a display that will always be available during the operation of
a SAS server. For example, if the server machine on which SAS servers
are running also runs an X server, then set the value of SAS_ALT_DISPLAY
to the name of the server machine. To set the SAS_ALT_DISPLAY environment
variable, edit the file
!SASROOT/bin/sasenv and substitute your display name for
value:0.0 in the line,
SAS_ALT_DISPLAY=value:0.0
If an X server is not
available on the server machine, an alternative is to use the X virtual
frame buffer (Xvfb) as supplied by the operating system vendor. Refer
to your vendor-supplied documentation for information about the use
of Xvfb.