guyn@il-kblwe02>ls -1sh
total 153M
6.1M linking_optimization_results_small.xls
 47M linking_optimization.txt
100M linking_optimization.xls
guyn@il-kblwe02>file linking_optimization_results_small.xls
linking_optimization_results_small.xls: Microsoft Office Document
guyn@il-kblwe02>file linking_optimization.xls
linking_optimization.xls: Microsoft Office Document