toaruos/apps/write-out.c
2018-08-14 17:13:38 +09:00

26 lines
623 B
C

/* vim: tabstop=4 shiftwidth=4 noexpandtab
* This file is part of ToaruOS and is released under the terms
* of the NCSA / University of Illinois License - see LICENSE.md
* Copyright (C) 2018 K. Lange
*
* write-out - write stdin into stdout until eof
*
* Not really necessary any more. This existed before the shell
* had support for >output.
*/
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
int main(int argc, char * argv[]) {
int fd = open(argv[1], O_WRONLY | O_CREAT | O_TRUNC, 0666);
while (1) {
char buf[1024];
size_t r = read(0, buf, 1024);
if (r == 0) break;
write(fd, buf, r);
}
}