Reference Manual

NAME

setifn - set the global current_ifn variable.
SYNOPSIS
setifn [ifn]

 

...
DESCRIPTION
When invoked with an argument, command setifn sets the global environment variable current_ifn to ifn. If no argument is specified, the command prints the current value of current_ifn.
NOTES

The current_ifn variable can be accessed as ifn in scripts or as $ifn in shell commands.

SEE ALSO
setmtu