<s>
libguestfs	B-Application
is	O
a	O
C	B-Language
library	B-Library
and	O
a	O
set	O
of	O
tools	O
for	O
accessing	O
and	O
modifying	O
virtual	O
disk	O
images	O
used	O
in	O
platform	B-General_Concept
virtualization	I-General_Concept
.	O
</s>
<s>
The	O
tools	O
can	O
be	O
used	O
for	O
viewing	O
and	O
editing	O
virtual	O
machines	O
(	O
VMs	O
)	O
managed	O
by	O
libvirt	B-Language
and	O
files	O
inside	O
VMs	O
,	O
scripting	O
changes	O
to	O
VMs	O
,	O
creating	O
VMs	O
,	O
and	O
much	O
else	O
besides	O
.	O
</s>
<s>
libguestfs	B-Application
can	O
access	O
nearly	O
any	O
type	O
of	O
file	O
system	O
including	O
:	O
all	O
known	O
types	O
of	O
Linux	B-Operating_System
filesystem	O
(	O
ext2/3/4	O
,	O
XFS	B-Application
,	O
btrfs	B-Operating_System
,	O
etc	O
.	O
</s>
<s>
)	O
,	O
any	O
Windows	O
filesystem	O
(	O
VFAT	B-Application
and	O
NTFS	B-Application
)	O
,	O
any	O
Mac	O
OS	O
X	O
and	O
BSD	O
filesystems	O
,	O
LVM2	B-Application
volume	O
management	O
,	O
MBR	B-Device
and	O
GPT	B-Application
disk	I-Application
partitions	O
,	O
raw	O
disks	O
,	O
qcow2	O
,	O
VirtualBox	O
VDI	O
,	O
VMWare	O
VMDK	O
,	O
Hyper-V	O
VHD/VHDX	O
,	O
on	O
files	O
,	O
local	O
devices	O
,	O
CD	O
and	O
DVD	O
ISOs	O
,	O
SD	O
cards	O
,	O
or	O
remotely	O
over	O
FTP	O
,	O
HTTP	O
,	O
SSH	B-Protocol
,	O
iSCSI	B-Protocol
,	O
NBD	B-Application
,	O
GlusterFS	B-Application
,	O
Ceph	B-Operating_System
,	O
Sheepdog	O
,	O
and	O
much	O
more	O
.	O
</s>
<s>
libguestfs	B-Application
does	O
not	O
require	O
root	O
permissions	O
.	O
</s>
<s>
Multiple	O
tools	O
are	O
available	O
modeled	O
after	O
ordinary	O
Unix	B-Application
commands	O
,	O
such	O
as	O
and	O
.	O
</s>
<s>
libguestfs	B-Application
is	O
also	O
an	O
API	B-Application
that	O
can	O
be	O
linked	O
with	O
C	B-Language
and	O
C++	B-Language
management	O
programs	O
and	O
has	O
bindings	O
for	O
Perl	B-Language
,	O
Python	B-Language
,	O
Ruby	B-Language
,	O
Java	B-Language
,	O
OCaml	B-Language
,	O
PHP	B-Application
,	O
Haskell	B-Language
,	O
Erlang	B-Operating_System
,	O
Lua	B-Language
,	O
Golang	B-Application
and	O
C#	B-Application
.	O
</s>
<s>
Using	O
the	O
FUSE	B-Application
module	O
guest	O
filesystems	O
can	O
be	O
mounted	O
on	O
the	O
host	O
with	O
the	O
command	O
.	O
</s>
<s>
libguestfs	B-Application
is	O
implemented	O
using	O
the	O
Kernel-based	B-Application
Virtual	I-Application
Machine	I-Application
for	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
.	O
</s>
