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Code cleanups.
[TD_IML.git]
/
TD2
/
exercise2
/
exercise.c
1
#include <stdlib.h>
2
#include <stdio.h>
3
#include <fcntl.h>
4
#include <unistd.h>
5
6
#include <sys/types.h>
7
#include <sys/stat.h>
8
9
int
main
() {
10
int
out_file_fd
=
open
(
"ouput.txt"
,
O_CREAT
|
O_WRONLY
,
S_IRUSR
|
S_IWUSR
);
11
if
(
out_file_fd
<
0
) {
12
perror
(
"open failure
\n
"
);
13
exit
(
EXIT_FAILURE
);
14
}
15
16
dup2
(
out_file_fd
,
STDOUT_FILENO
);
17
18
execl
(
"/bin/ls"
,
"ls"
, (
char
*)
NULL
);
19
20
close
(
out_file_fd
);
21
22
return
EXIT_SUCCESS
;
23
}