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#include <fcntl.h> // open, close, O_RDONLY
#include <unistd.h> // read
#include <stdio.h> // printf, perror
int main(int argc, char* argv[]) {
int f1 = open(argv[1], O_RDONLY);
if (f1 < 0) {
perror("open");
return 1;
}
int f2 = dup(f1);
if (f2 < 0) {
perror("dup");
return 2;
}
int readTimes = 10; // няколко пъти
char buf1, buf2;
while (readTimes > 0 && read(f1, &buf1, 1) && read(f2, &buf2, 1)) {
printf("%c%c", buf1, buf2);
readTimes--;
}
close(f1);
while (read(f2, &buf2, 1)) {
printf("%c", buf2);
}
close(f2);
}
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