// Tee.cmm  Send lines to screen and to output file


main(argc,argv)
{
   if ( 2 != argc )
      Instructions();
   else {
      // open ouput file
      if ( NULL == (fp=fopen(argv[1],"w")) )
         printf("Could not open file \"%s\" for writing.\a\n",argv[1])
      else {
         // read in each line, and send to file and screen
         while ( NULL != (line=gets()) ) {
            printf("%s\n",line)
            fprintf(fp,"%s\n",line)
         }
         fclose(fp)
      }
   }
}


Instructions()
{
   printf("Tee.cmm - Pipe output to screen AND to a file\n");
   printf("USAGE: Tee.cmm <FileSpec>\n");
   printf("  Where:  FileSpec = Name of file to create and write text to\n");
   printf("Example: To see output of a dir listing, but also save it in a file:\n");
   printf("     dir | cenvi tee.cmm dir.txt\n");
}