gauss 21> tdvto
 usage: tdvto <file name> <n>

        Use 'tdvto -' to write to standard output

gauss 22> tdvto -
 usage: tdvto <file name> <n>

        Use 'tdvto -' to write to standard output

gauss 23> tdvto - 10
    1.000000000000000    
    2.000000000000000    
    3.000000000000000    
    4.000000000000000    
    5.000000000000000    
    6.000000000000000    
    7.000000000000000    
    8.000000000000000    
    9.000000000000000    
    10.00000000000000    

gauss 24> tdvto foo 5
gauss 25> more foo
    1.000000000000000    
    2.000000000000000    
    3.000000000000000    
    4.000000000000000    
    5.000000000000000