printf("  -b file   use specified batchfile\n"); printf("  -bc       output batchfile commands\n"); printf("  -be       don't stop batchfile processing if errors\n");
static void usage(void){    printf("PuTTY Secure File Transfer (SFTP) client\n");    printf("%s\n", ver);    printf("Usage: psftp [options] user@host\n");    printf("Options:\n");    printf("  -v        show verbose messages\n");    printf("  -P port   connect to specified port\n");    printf("  -pw passw login with specified password\n");    exit(1);}