1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Format.h>
#include <stdio.h>
#include <unistd.h>
int main(int, char**)
{
if (pledge("stdio rpath", nullptr) < 0) {
perror("pledge");
return 1;
}
FILE* fp = fopen("/proc/uptime", "r");
if (!fp) {
perror("fopen(/proc/uptime)");
return 1;
}
if (pledge("stdio", nullptr) < 0) {
perror("pledge");
return 1;
}
char buffer[BUFSIZ];
auto* p = fgets(buffer, sizeof(buffer), fp);
if (!p) {
perror("fgets");
return 1;
}
unsigned seconds;
sscanf(buffer, "%u", &seconds);
out("Up ");
if (seconds / 86400 > 0) {
out("{} day{}, ", seconds / 86400, (seconds / 86400) == 1 ? "" : "s");
seconds %= 86400;
}
if (seconds / 3600 > 0) {
out("{} hour{}, ", seconds / 3600, (seconds / 3600) == 1 ? "" : "s");
seconds %= 3600;
}
if (seconds / 60 > 0) {
out("{} minute{}, ", seconds / 60, (seconds / 60) == 1 ? "" : "s");
seconds %= 60;
}
out("{} second{}", seconds, seconds == 1 ? "" : "s");
outln();
fclose(fp);
return 0;
}
|