HP 3000 Manuals

MPE/iX Developer's Kit Reference Manual Volume II

Environment Variables 

The following three environment variables are useful, and can be set in
the MPE/iX shell:

   *   TERMINFO

   *   COLUMNS

   *   LINES

Refer to the MPE/iX Shell and Utilities User's Guide (36431-90002) for
more information on the MPE/iX shell.

TERMINFO Environment Variable 

If you have an alternate Terminfo database containing terminal types that
are not available in the system default database /usr/lib/terminfo, you
can specify the TERMINFO environment variable to point to this alternate
database.  For example:

     export TERMINFO=/usr/lib/specialinfo 

This path specifies the location of the alternate compiled TERMINFO
database, whose structure consists of directory names 0 to 9 and a to z,
each containing compiled terminal definition files for names beginning
with the directory letter or number.

The alternate database specified by TERMINFO is examined before the
system default database.  If the terminal type specified by TERM cannot
be found in either database, the default terminal type hp2392a is
assumed.

COLUMNS Environment Variable 

The COLUMNS environment variable is used to set the window width.

For example, to specify a window width smaller than your screen width in
situations where your communications line is slow, set the COLUMNS
environment variable to the number of vertical columns that you want
between the left and right margins.

     export COLUMNS=number 

The number of columns may be set to a number smaller than the screen
size; however, if set larger than the screen or window width, the results
are undefined.  Currently, the largest screen width possible is 132
columns.

The value set using the COLUMNS environment variable takes precedence
over the value normally used for the terminal.

LINES Environment Variable 

The LINES environment variable is used to set the window height.

For example, to specify a window height smaller than your current screen
height in situations where your communications line is slow, override the
LINES environment variable by setting it to a smaller number of
horizontal lines.

     export LINES=number 

The number of lines may be set to a number smaller than the screen
height; however, if set larger than the screen or window height, the
results are undefined.  Currently, the largest screen height possible is
128 lines.

The value set using the LINES environment variable takes precedence over
the value normally used for the terminal.

MPE/iX 5.0 Documentation