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/*
* catrw.c -- open a file with O_RDWR and print it.
*
* This file is placed in the public domain.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#define BUFSIZE 4096
char buf[BUFSIZE];
void catrw(int fd) {
int i;
for (;;) {
while ( (i = read(fd, buf, BUFSIZE)) < 0 && errno == EINTR)
;
if (i <= 0)
break;
write(1, buf, i);
}
}
int main(int argc, char *argv[]) {
int fd;
if (argc == 1)
catrw(0);
else {
while (--argc && (fd = open(*++argv, O_RDWR))) {
catrw(fd);
close(fd);
}
}
return 0;
}
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