Penguin
Annotated edit history of update(8) version 1, including all changes. View license author blame.
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1 perry 1 UPDATE
2 !!!UPDATE
3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 SEE ALSO
7 AUTHOR
8 ----
9 !!NAME
10
11
12 update - periodically flush filesystem buffers.
13 !!SYNOPSIS
14
15
16 __update [[ options ]__
17 !!DESCRIPTION
18
19
20 The __update__ daemon flushes the filesystem buffers at a
21 regular interval. It has two modes of operation. By default
22 it will wake up every 5 seconds and flush some dirty
23 buffers. Newer kernels do not need a user space update
24 daemon. This is automatically detected by __update__
25 which will simply exit. The traditional behavior of waking
26 up every 30 seconds to call sync(2) can be forced
27 with an option if it is deemed necessary.
28
29
30 The following options are accepted by
31 __update__:
32
33
34 __-S, --use-sync__
35
36
37 Use the traditional behavior of calling
38 sync(2).
39
40
41 __-s, --sync-interval__ ''secs''
42
43
44 If using sync, wake up and call it every ''secs''
45 seconds. The default is every 30 seconds.
46
47
48 __-f, --flush-interval__ ''secs''
49
50
51 Unless using sync, wake up and flush some buffers every
52 ''secs'' seconds. The default is every 5
53 seconds.
54
55
56 __--help__
57
58
59 Print a usage message on standard output and exit
60 successfully.
61
62
63 __--version__
64
65
66 Print version information on standard output then exit
67 successfully.
68
69
70 __update__ should be started as early as possible during
71 the boot process. If it is invoked by a non-privileged user,
72 it calls sync and exits.
73 !!SEE ALSO
74
75
76 init(8), sync(2), sync(8)
77 !!AUTHOR
78
79
80 Torsten Poulin
81 ----
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