Messages in this thread | | | Date | Tue, 14 Mar 2006 09:59:40 -0800 | From | Paul Jackson <> | Subject | Re: procfs uglyness caused by "cat" |
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Paul Rolland wrote: > is funny enough...
You used the stdio routine fread - which buffers in user space. It does a single read, and then feeds you the characters as you ask for them, out of its stdio buffer.
Try the following program, which doesn't buffer:
main() { char c; int fd = open("/proc/uptime", 0); while (read(fd, &c, 1) == 1) { write(1, &c, 1); sleep(1); } }
-- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson <pj@sgi.com> 1.925.600.0401 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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