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.Dd August 21, 2017
.Dt HOLES 1
.Os
.Sh NAME
.Nm holes
.Nd find runs of zero bytes
.Sh SYNOPSIS
.Nm
.Op Fl n Ar minlen
.Op Ar files\ ...
.Sh DESCRIPTION
.Nm
looks for runs of zero bytes (a.k.a. holes) in the specified input files
(or the standard input),
and prints the start adresses (in hexadecimal)
as well as the lengths (in decimal).
When multiple input files are specified,
.Nm
prefixes each line with the file name.
.Pp
By default,
only holes of at least 64 bytes are reported.
This can be changed using the
.Fl n
option.
.Sh EXIT STATUS
.Ex -std
.Sh SEE ALSO
.Xr fallocate 1 ,
.Xr truncate 1 ,
.Xr virt-sparsify 1
.Sh AUTHORS
.An Leah Neukirchen Aq Mt leah@vuxu.org
.Sh LICENSE
.Nm
is in the public domain.
.Pp
To the extent possible under law,
the creator of this work
has waived all copyright and related or
neighboring rights to this work.
.Pp
.Lk http://creativecommons.org/publicdomain/zero/1.0/
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