Mega Code Archive
Appending two files
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#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int main(int argc, char **argv) {
char buf[1024];
int n, in, out;
if(argc != 3) {
fprintf(stderr, "Usage: append SOURCE TARGET\n");
return 0;
}
/* open the first file for reading */
in = open(argv[1], O_RDONLY);
/* the second file for writing */
out = open(argv[2], O_WRONLY|O_APPEND);
/* copy data from the first file to the second file */
while((n = read(in, buf, sizeof(buf))) > 0)
write(out, buf, n);
return 0;
}
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