Bell 32V development

[unix-history] / usr / src / cmd / rew.c

main(argc,args)
char **args ;
{
register char *tape ;
int i , j ;

if (argc > 2) {
       usage :
               printf("usage : rew [[m]digit]\n") ;
               exit(1) ;
       }
tape = "/dev/tap0" ;
if (argc > 1) {
       j = 0 ;
       if (args[1][j] == 'm') {
               tape = "/dev/mt0" ;
               i = 7 ;
               j++ ;
               }
       else i = 8 ;
       if (args[1][j] != '\0') tape[i] = args[1][j] ;
       }
i = open(tape,0) ;
read(i,&j,sizeof(j)) ;
close(i) ;
}