rt

柯老师网站上找到的

#! /bin/sh
progname=`basename $0`

if [ -f ns ] ; then
    PROG=./ns
elif [ -f ns.dyn ] ; then
    PROG=./ns.dyn
fi

rm -f out.tr all.tr core
echo $PROG tcl/test/test-suite-$1.tcl $2 $3
if $PROG tcl/test/test-suite-$1.tcl $2 $3 ; then
    if [ ! -f out.tr ] ; then
	echo "$progname: no output?" 1>&2
    else
	if [ -n "$DISPLAY" ] ; then
	    raw2xg -m 90 -s 0.01 out.tr | xgraph 
	else
	    file=`perl -ane '$F[2] =~ s/test_// ; $F[2] =~ s/_/-/g; print $F[2]; exit' out.tr`
	    raw2gp -a out.tr | gnuplot
	    echo "$progname: postscript of graph is in $file.ps"
	fi
    fi
elif [ -f core ] ; then
    echo "$progname: core dump" 1>&2
fi