next up previous contents
Next: Common idioms Up: Variables Previous: Variables   Contents

Numeric variables

Variable assignments are of the form $var=expression. Variable assignments can appear either before a command, or between values in the send command.

Variable references are of the form $var, and can appear anywhere where an integer number or a dotted quad could be used, except in a tc, insmod, or preload command.


#define foo(params) \
  $answer=42 params \
  $answer $value

send foo($value=5)
send foo($value=10 $answer=8)

yields the following two packets:


Martin A. Brown 2003-11-06