jdk/test/sun/tools/jstat/timeStamp1.awk

#
# matching the following output specified as a pattern that verifies
# that the numerical values conform to a specific pattern, rather than
# specific values.
#
#Timestamp         S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT     GCT   
#            0.3   0.00 100.00  68.74   1.95  77.73  68.02      1    0.004     0    0.000    0.004

BEGIN	{
	    headerlines=0; datalines=0; totallines=0
	}

/^Timestamp         S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT     GCT   $/	{
	    headerlines++;
	}

/^[ ]*[0-9]+\.[0-9]+[ ]*[0-9]+\.[0-9]+[ ]*[0-9]+\.[0-9]+[ ]*[0-9]+\.[0-9]+[ ]*[0-9]+\.[0-9]+[ ]*([0-9]+\.[0-9]+)|-[ ]*[0-9]+\.[0-9]+[ ]*[0-9]+[ ]*[0-9]+\.[0-9]+[ ]*[0-9]+[ ]*[0-9]+\.[0-9]+[ ]*[0-9]+\.[0-9]+$/	{
	    datalines++;
	}

	{ totallines++; print $0 }

END	{
	    if ((headerlines == 1) && (datalines == 1) && (totallines == 2)) {
	        exit 0
	    }
	    else {
	        exit 1
	    }
	}