This is vbaud.c in view mode; [Download] [Up]
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv)
{
unsigned long speed;
if (argc !=2 || (speed = atol(argv[1])) == 0 || speed > 38400) {
fprintf(stderr, "Usage: %s <bit rate>\n"
"\t %s rate limits the output speed to the speed over\n"
"\t a serial line rated at <bit rate>.\n\n"
"Example:\n"
"\t %% gzip -dc globe.vt.gz | ./%s 9600\n"
"\t Shows a slowly rotating globe in your terminal window.\n"
"\t VT100 animation files can e.g. be found at\n"
"\t https://ftp.nice.ch/NiCE/vt100.anims/\n",
argv[0], argv[0], argv[0]);
exit(1);
/* This bit rate is frequently also specified as the <baud rate>
* (e.g. "9600 baud"), even though that 1:1 matching is only true
* for real serial lines, and not e.g. for modems.
*/
}
/* Assume actual serial line would require 10 bits
* (1 start+8 data+0 parity+1 stop) per char */
unsigned long wait = 10000000L / speed;
int ch;
/* Turn off line buffering */
setvbuf(stdout, NULL, _IONBF, 0);
while ((ch = getchar()) != EOF) {
putchar(ch);
usleep(wait);
}
return 0;
}