#nil()

DESCRIPTION
    returns the null value NIL

SYNOPSIS
    #nil()

ARGUMENTS
    none

EXAMPLES

        rule
                if #pid($pr1) == #nil()
                        set #norun = #true()
                        set $state = "-"
                endif

        begin
                // check pid's
                if #pid("piktc_svc") == #nil()
                        output mail "piktc_svc not running!"
                fi
                if #pid("piktc_svc") == #err()
                        output mail "multiple piktc_svc running!"
                fi
                if #pid("piktd") == #nil()
                        output mail "piktd not running!"
                fi
                if #pid("piktd") == #err()
                        output mail "multiple piktd running!"
                fi

SEE ALSO
    #defined()
    #err()
    #error()

    Numerical Functions
    String Functions