[root@devel3 tmp]# ulimit -n 65535
[root@devel3 tmp]# perl -e 'open ++$fh, ">", $fh or die "$fh $!\n" for  1..$ARGV[0]' 2048
[root@devel3 tmp]# ls 204?
2040  2041  2042  2043  2044  2045  2046  2047  2048
[root@devel3 tmp]#