.help show Feb86 language .ih NAME show -- show the current value of an IRAF environment variable .ih USAGE show [varname] .ih PARAMETERS .ls varname The name of the environment variable to be displayed. .le .ih DESCRIPTION The \fIshow\fR command shows the current values of all defined environment variables if called with no arguments, or the value of a specific variable if an argument is given. Unlike \fIset\fR, only current values are shown, not the entire history of the definitions of environment variables. .ih EXAMPLES 1. Show the current default printer device. cl> show printer 2. Show all "std" (standard i/o stream) related variables. cl> show | match std .ih SEE ALSO set .endhelp