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1.1 root 1: .TH SYNC 8
2: .CT 1 sa_nonmortals
3: .SH NAME
4: sync, update \- update disk file systems
5: .SH SYNOPSIS
6: .B sync
7: .PP
8: .B /etc/update
9: .SH DESCRIPTION
10: .I Sync
11: executes the
12: .IR sync (2)
13: system primitive,
14: to suggest that all disk writes be completed soon.
15: It is wise to call
16: .I sync
17: before halting the system.
18: .PP
19: .I Update
20: calls
21: .IR sync (2)
22: every 30 seconds,
23: so that file systems
24: are fairly well up to date
25: if the system crashes.
26: It should be run once
27: from
28: .IR rc (8).
29: .SH "SEE ALSO"
30: .IR sync (2),
31: .IR reboot (8)
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