c:\test>wc -l syssort
40000000 syssort

c:\test>dir syssort
19/12/2009  13:47     3,160,000,000 syssort

perl -le"$t=time;scalar<>for 1..20e6;print scalar<>;print time()-$t" syssort
49_992_005_J1 chr9      97768833        97768867        ATTTTCTTCAATTACATTTCCAATGCTATCCCAAA     +   35

12