Purpose
With no arguments, show the name of the current LRIS
grism. With 1 argument, change the grism to the
specified name.
Usage
grism [name]
Arguments
name = name of the new grism to select
Output
The new/current grism name is printed on stdout
Exit values
0 = normal completion
1 = wrong number of arguments
Restrictions
- "grism" names containing spaces or special characters must be
quoted
Example
1) show the name of the current grism
grism
2) reset the grism name to "300/4000"
grism 300/4000