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newfs_msdos: clarify description of -T (timestamp) option

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Submitted by:	Siva Mahadevan <smahadevan@freebsdfoundation.org>
Reported by:	Daniel Shahaf <danielsh apache org>
Reviewed by:	emaste
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Ed Maste 2017-05-16 19:03:26 +00:00
parent 8a6eceff3c
commit 4dd362f93f
1 changed files with 11 additions and 9 deletions
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20
sbin/newfs_msdos/newfs_msdos.8
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@ -38,10 +38,11 @@
.Op Fl B Ar boot
.Op Fl C Ar create-size
.Op Fl F Ar FAT-type
.Op Fl I Ar VolumeId
.Op Fl I Ar VolumeID
.Op Fl L Ar label
.Op Fl O Ar OEM
.Op Fl S Ar sector-size
.Op Fl T Ar timestamp
.Op Fl a Ar FAT-size
.Op Fl b Ar block-size
.Op Fl c Ar cluster-size
@ -55,7 +56,6 @@
.Op Fl o Ar hidden
.Op Fl r Ar reserved
.Op Fl s Ar total
.Op Fl T Ar timestamp
.Op Fl u Ar track-size
.Ar special
.Op Ar disktype
@ -118,6 +118,14 @@ The default is
Number of bytes per sector.
Acceptable values are powers of 2
in the range 512 through 32768, inclusive.
.It Fl T Ar timestamp
Create the filesystem as though the current time is
.Ar timestamp .
The default filesystem volume ID is derived from the time.
.Ar timestamp
can be a pathname (where the timestamp is derived from
that file) or an integer value interpreted
as the number of seconds since the Epoch.
.It Fl a Ar FAT-size
Number of sectors per FAT.
.It Fl b Ar block-size
@ -160,17 +168,11 @@ Number of hidden sectors.
Number of reserved sectors.
.It Fl s Ar total
File system size.
.It Fl T Ar timestamp
Specify a timestamp to be used for filesystem creation so that
it can be consistent for reproducible builds.
The timestamp can be a pathname (where the timestamps are derived from
that file) or an integer value interpreted
as the number of seconds since the Epoch.
.It Fl u Ar track-size
Number of sectors per track.
.El
.Sh NOTES
If some parameters (e.g. size, number of sectors, etc.) are not specified
If some parameters (e.g., size, number of sectors, etc.) are not specified
through options or disktype, the program tries to generate them automatically.
In particular, the size is determined as the device or file size minus the
offset specified with the