=encoding utf8

=head1 НАЗВА

guestfish - the libguestfs Filesystem Interactive SHell

=head1 КОРОТКИЙ ОПИС

 guestfish [--options] [commands]

 guestfish

 guestfish [--ro|--rw] -a disk.img

 guestfish [--ro|--rw] -a disk.img -m dev[:mountpoint]

 guestfish -d libvirt-domain

 guestfish [--ro|--rw] -a disk.img -i

 guestfish -d libvirt-domain -i

=head1 ПОПЕРЕДЖЕННЯ

Using guestfish in read/write mode on live virtual machines can be
dangerous, potentially causing disk corruption.  Use the I<--ro> (read-only)
option to use guestfish safely if the disk image or virtual machine might be
live.

=head1 ОПИС

Guestfish is a shell and command-line tool for examining and modifying
virtual machine filesystems.  It uses libguestfs and exposes all of the
functionality of the guestfs API, see L<guestfs(3)>.

Guestfish gives you structured access to the libguestfs API, from shell
scripts or the command line or interactively.  If you want to rescue a
broken virtual machine image, you should look at the L<virt-rescue(1)>
command.

=head1 ПРИКЛАДИ

=head2 As an interactive shell

 $ guestfish
 
 Welcome to guestfish, the libguestfs filesystem interactive shell for
 editing virtual machine filesystems.
 
 Type: 'help' for a list of commands
       'man' to read the manual
       'quit' to quit the shell
 
 ><fs> add-ro disk.img
 ><fs> run
 ><fs> list-filesystems
 /dev/sda1: ext4
 /dev/vg_guest/lv_root: ext4
 /dev/vg_guest/lv_swap: swap
 ><fs> mount /dev/vg_guest/lv_root /
 ><fs> cat /etc/fstab
 # /etc/fstab
 # Created by anaconda
 [...]
 ><fs> exit

=head2 From shell scripts

Create a new C</etc/motd> file in a guest or disk image:

 guestfish <<_EOF_
 add disk.img
 run
 mount /dev/vg_guest/lv_root /
 write /etc/motd "Welcome, new users"
 _EOF_

List the LVM logical volumes in a disk image:

 guestfish -a disk.img --ro <<_EOF_
 run
 lvs
 _EOF_

List all the filesystems in a disk image:

 guestfish -a disk.img --ro <<_EOF_
 run
 list-filesystems
 _EOF_

=head2 On one command line

Update C</etc/resolv.conf> in a guest:

 guestfish \
   add disk.img : run : mount /dev/vg_guest/lv_root / : \
   write /etc/resolv.conf "nameserver 1.2.3.4"

Edit C</boot/grub/grub.conf> interactively:

 guestfish --rw --add disk.img \
   --mount /dev/vg_guest/lv_root \
   --mount /dev/sda1:/boot \
   edit /boot/grub/grub.conf

=head2 Mount disks automatically

Use the I<-i> option to automatically mount the disks from a virtual
machine:

 guestfish --ro -a disk.img -i cat /etc/group

 guestfish --ro -d libvirt-domain -i cat /etc/group

Another way to edit C</boot/grub/grub.conf> interactively is:

 guestfish --rw -a disk.img -i edit /boot/grub/grub.conf

=head2 As a script interpreter

Create a 100MB disk containing an ext2-formatted partition:

 #!/usr/bin/guestfish -f
 sparse test1.img 100M
 run
 part-disk /dev/sda mbr
 mkfs ext2 /dev/sda1

=head2 Start with a prepared disk

An alternate way to create a 100MB disk called C<test1.img> containing a
single ext2-formatted partition:

 guestfish -N fs

To list what is available do:

 guestfish -N help | less

=head2 Дистанційне керування

 eval "`guestfish --listen`"
 guestfish --remote add-ro disk.img
 guestfish --remote run
 guestfish --remote lvs

=head1 ПАРАМЕТРИ

=over 4

=item B<--help>

Displays general help on options.

=item B<-h>

=item B<--cmd-help>

Lists all available guestfish commands.

=item B<-h команда>

=item B<--cmd-help команда>

Displays detailed help on a single command C<cmd>.

=item B<-a образ>

=item B<--add образ>

Add a block device or virtual machine image to the shell.

The format of the disk image is auto-detected.  To override this and force a
particular format use the I<--format=..> option.

Using this flag is mostly equivalent to using the C<add> command, with
C<readonly:true> if the I<--ro> flag was given, and with C<format:...> if
the I<--format=...> flag was given.

=item B<-c адреса>

=item B<--connect адреса>

When used in conjunction with the I<-d> option, this specifies the libvirt
URI to use.  The default is to use the default libvirt connection.

=item B<--csh>

If using the I<--listen> option and a csh-like shell, use this option.  See
section L</REMOTE CONTROL AND CSH> below.

=item B<-d домен-libvirt>

=item B<--domain домен-libvirt>

Add disks from the named libvirt domain.  If the I<--ro> option is also
used, then any libvirt domain can be used.  However in write mode, only
libvirt domains which are shut down can be named here.

Domain UUIDs can be used instead of names.

Using this flag is mostly equivalent to using the C<add-domain> command,
with C<readonly:true> if the I<--ro> flag was given, and with C<format:...>
if the I<--format=...> flag was given.

=item B<-D>

=item B<--no-dest-paths>

Don't tab-complete paths on the guest filesystem.  It is useful to be able
to hit the tab key to complete paths on the guest filesystem, but this
causes extra "hidden" guestfs calls to be made, so this option is here to
allow this feature to be disabled.

=item B<--echo-keys>

When prompting for keys and passphrases, guestfish normally turns echoing
off so you cannot see what you are typing.  If you are not worried about
Tempest attacks and there is no one else in the room you can specify this
flag to see what you are typing.

=item B<-f файл>

=item B<--file файл>

Read commands from C<file>.  To write pure guestfish scripts, use:

 #!/usr/bin/guestfish -f

=item B<--format=raw|qcow2|..>

=item B<--format>

The default for the I<-a> option is to auto-detect the format of the disk
image.  Using this forces the disk format for I<-a> options which follow on
the command line.  Using I<--format> with no argument switches back to
auto-detection for subsequent I<-a> options.

Приклад:

 guestfish --format=raw -a disk.img

forces raw format (no auto-detection) for C<disk.img>.

 guestfish --format=raw -a disk.img --format -a another.img

forces raw format (no auto-detection) for C<disk.img> and reverts to
auto-detection for C<another.img>.

If you have untrusted raw-format guest disk images, you should use this
option to specify the disk format.  This avoids a possible security problem
with malicious guests (CVE-2010-3851).  See also L</add-drive-opts>.

=item B<-i>

=item B<--inspector>

Using L<virt-inspector(1)> code, inspect the disks looking for an operating
system and mount filesystems as they would be mounted on the real virtual
machine.

Typical usage is either:

 guestfish -d myguest -i

(for an inactive libvirt domain called I<myguest>), or:

 guestfish --ro -d myguest -i

(for active domains, readonly), or specify the block device directly:

 guestfish --rw -a /dev/Guests/MyGuest -i

Note that the command line syntax changed slightly over older versions of
guestfish.  You can still use the old syntax:

 guestfish [--ro] -i disk.img

 guestfish [--ro] -i libvirt-domain

Using this flag is mostly equivalent to using the C<inspect-os> command and
then using other commands to mount the filesystems that were found.

=item B<--keys-from-stdin>

Read key or passphrase parameters from stdin.  The default is to try to read
passphrases from the user by opening C</dev/tty>.

=item B<--listen>

Fork into the background and listen for remote commands.  See section
L</REMOTE CONTROL GUESTFISH OVER A SOCKET> below.

=item B<--live>

Connect to a live virtual machine.  (Experimental, see
L<guestfs(3)/ATTACHING TO RUNNING DAEMONS>).

=item B<-m пристрій[:точка_монтування[:параметри]]>

=item B<--mount пристрій[:точка_монтування[:параметри]]>

Mount the named partition or logical volume on the given mountpoint.

If the mountpoint is omitted, it defaults to C</>.

You have to mount something on C</> before most commands will work.

If any I<-m> or I<--mount> options are given, the guest is automatically
launched.

If you don't know what filesystems a disk image contains, you can either run
guestfish without this option, then list the partitions, filesystems and LVs
available (see L</list-partitions>, L</list-filesystems> and L</lvs>
commands), or you can use the L<virt-filesystems(1)> program.

The third (and rarely used) part of the mount parameter is the list of mount
options used to mount the underlying filesystem.  If this is not given, then
the mount options are either the empty string or C<ro> (the latter if the
I<--ro> flag is used).  By specifying the mount options, you override this
default choice.  Probably the only time you would use this is to enable ACLs
and/or extended attributes if the filesystem can support them:

 -m /dev/sda1:/:acl,user_xattr

Using this flag is equivalent to using the C<mount-options> command.

=item B<-n>

=item B<--no-sync>

Disable autosync.  This is enabled by default.  See the discussion of
autosync in the L<guestfs(3)> manpage.

=item B<-N тип>

=item B<--new тип>

=item B<-N help>

Prepare a fresh disk image formatted as "type".  This is an alternative to
the I<-a> option: whereas I<-a> adds an existing disk, I<-N> creates a
preformatted disk with a filesystem and adds it.  See L</PREPARED DISK
IMAGES> below.

=item B<--pipe-error>

If writes fail to pipe commands (see L</PIPES> below), then the command
returns an error.

The default (also for historical reasons) is to ignore such errors so that:

 ><fs> command_with_lots_of_output | head

doesn't give an error.

=item B<--progress-bars>

Enable progress bars, even when guestfish is used non-interactively.

Progress bars are enabled by default when guestfish is used as an
interactive shell.

=item B<--no-progress-bars>

Disable progress bars.

=item B<--remote[=pid]>

Send remote commands to C<$GUESTFISH_PID> or C<pid>.  See section L</REMOTE
CONTROL GUESTFISH OVER A SOCKET> below.

=item B<-r>

=item B<--ro>

This changes the I<-a>, I<-d> and I<-m> options so that disks are added and
mounts are done read-only.

The option must always be used if the disk image or virtual machine might be
running, and is generally recommended in cases where you don't need write
access to the disk.

Note that prepared disk images created with I<-N> are not affected by this
option.  Also commands like C<add> are not affected - you have to specify
the C<readonly:true> option explicitly if you need it.

See also L</OPENING DISKS FOR READ AND WRITE> below.

=item B<--selinux>

Enable SELinux support for the guest.  See L<guestfs(3)/SELINUX>.

=item B<-v>

=item B<--verbose>

Enable very verbose messages.  This is particularly useful if you find a
bug.

=item B<-V>

=item B<--version>

Display the guestfish / libguestfs version number and exit.

=item B<-w>

=item B<--rw>

This changes the I<-a>, I<-d> and I<-m> options so that disks are added and
mounts are done read-write.

See L</OPENING DISKS FOR READ AND WRITE> below.

=item B<-x>

Echo each command before executing it.

=back

=head1 COMMANDS ON COMMAND LINE

Any additional (non-option) arguments are treated as commands to execute.

Commands to execute should be separated by a colon (C<:>), where the colon
is a separate parameter.  Thus:

 guestfish cmd [args...] : cmd [args...] : cmd [args...] ...

If there are no additional arguments, then we enter a shell, either an
interactive shell with a prompt (if the input is a terminal) or a
non-interactive shell.

In either command line mode or non-interactive shell, the first command that
gives an error causes the whole shell to exit.  In interactive mode (with a
prompt) if a command fails, you can continue to enter commands.

=head1 USING launch (OR run)

As with L<guestfs(3)>, you must first configure your guest by adding disks,
then launch it, then mount any disks you need, and finally issue
actions/commands.  So the general order of the day is:

=over 4

=item *

add or -a/--add

=item *

launch (aka run)

=item *

mount or -m/--mount

=item *

any other commands

=back

C<run> is a synonym for C<launch>.  You must C<launch> (or C<run>)  your
guest before mounting or performing any other commands.

The only exception is that if any of the I<-i>, I<-m>, I<--mount>, I<-N> or
I<--new> options were given then C<run> is done automatically, simply
because guestfish can't perform the action you asked for without doing this.

=head1 OPENING DISKS FOR READ AND WRITE

The guestfish, L<guestmount(1)> and L<virt-rescue(1)> options I<--ro> and
I<--rw> affect whether the other command line options I<-a>, I<-c>, I<-d>,
I<-i> and I<-m> open disk images read-only or for writing.

In libguestfs E<le> 1.10, guestfish, guestmount and virt-rescue defaulted to
opening disk images supplied on the command line for write.  To open a disk
image read-only you have to do I<-a image --ro>.

This matters: If you accidentally open a live VM disk image writable then
you will cause irreversible disk corruption.

In a future libguestfs we intend to change the default the other way.  Disk
images will be opened read-only.  You will have to either specify
I<guestfish --rw>, I<guestmount --rw>, I<virt-rescue --rw>, or change the
configuration file C</etc/libguestfs-tools.conf> in order to get write
access for disk images specified by those other command line options.

This version of guestfish, guestmount and virt-rescue has a I<--rw> option
which does nothing (it is already the default).  However it is highly
recommended that you use this option to indicate that you need write access,
and prepare your scripts for the day when this option will be required for
write access.

B<Note:> This does I<not> affect commands like L</add> and L</mount>, or any
other libguestfs program apart from guestfish and guestmount.

=head1 ЛАПКИ

You can quote ordinary parameters using either single or double quotes.  For
example:

 add "file with a space.img"

 rm '/file name'

 rm '/"'

A few commands require a list of strings to be passed.  For these, use a
whitespace-separated list, enclosed in quotes.  Strings containing
whitespace to be passed through must be enclosed in single quotes.  A
literal single quote must be escaped with a backslash.

 vgcreate VG "/dev/sda1 /dev/sdb1"
 command "/bin/echo 'foo      bar'"
 command "/bin/echo \'foo\'"

=head2 ESCAPE SEQUENCES IN DOUBLE QUOTED ARGUMENTS

In double-quoted arguments (only) use backslash to insert special
characters:

=over 4

=item C<\a>

Символ гудка (дзвінка).

=item C<\b>

Символ «зворотній хід»

=item C<\f>

Form feed character.

=item C<\n>

Newline character.

=item C<\r>

Символ повернення каретки.

=item C<\t>

Символ горизонтальної табуляції

=item C<\v>

Символ вертикальної табуляції.

=item C<\">

A literal double quote character.

=item C<\ooo>

A character with octal value I<ooo>.  There must be precisely 3 octal digits
(unlike C).

=item C<\xhh>

A character with hex value I<hh>.  There must be precisely 2 hex digits.

In the current implementation C<\000> and C<\x00> cannot be used in strings.

=item C<\\>

A literal backslash character.

=back

=head1 OPTIONAL ARGUMENTS

Some commands take optional arguments.  These arguments appear in this
documentation as C<[argname:..]>.  You can use them as in these examples:

 add-drive-opts filename

 add-drive-opts filename readonly:true

 add-drive-opts filename format:qcow2 readonly:false

Each optional argument can appear at most once.  All optional arguments must
appear after the required ones.

=head1 ЧИСЛА

This section applies to all commands which can take integers as parameters.

=head2 SIZE SUFFIX

When the command takes a parameter measured in bytes, you can use one of the
following suffixes to specify kilobytes, megabytes and larger sizes:

=over 4

=item B<k>, B<K> або B<KiB>

Розмір у кілобайтах (у одному кілобайті 1024 байтів).

=item B<KB>

Розмір у одиницях СІ: 1000 байтів.

=item B<M> або B<MiB>

Розмір у мегабайтах (у одному мегабайті 1048576 байтів).

=item B<MB>

Розмір у одиницях СІ: 1000000 байтів.

=item B<G> або B<GiB>

Розмір у гігабайтах (з множником 2**30).

=item B<GB>

Розмір у одиницях СІ: 10**9 байтів.

=item B<T> або B<TiB>

Розмір у терабайтах (з множником 2**40).

=item B<TB>

Розмір у одиницях СІ: 10**12 байтів.

=item B<P> або B<PiB>

Розмір у петабайтах (у одному петабайті 2**50 байтів).

=item B<PB>

Розмір у одиницях СІ: 10**15 байтів.

=item B<E> або B<EiB>

Розмір у ексабайтах (у одному ексабайті 2**60 байтів).

=item B<EB>

Розмір у одиницях СІ: 10**18 байтів.

=item B<Z> або B<ZiB>

Розмір у зетабайтах (у одному зетабайті 2**70 байтів).

=item B<ZB>

Розмір у одиницях СІ: 10**21 байтів.

=item B<Y> або B<YiB>

Розмір у йотабайтах (у одному йотабайті 2**80 байтів).

=item B<YB>

Розмір у одиницях СІ: 10**24 байтів.

=back

Приклад:

 truncate-size /file 1G

would truncate the file to 1 gigabyte.

Be careful because a few commands take sizes in kilobytes or megabytes
(eg. the parameter to L</memsize> is specified in megabytes already).
Adding a suffix will probably not do what you expect.

=head2 OCTAL AND HEXADECIMAL NUMBERS

For specifying the radix (base) use the C convention: C<0> to prefix an
octal number or C<0x> to prefix a hexadecimal number.  For example:

 1234      decimal number 1234
 02322     octal number, equivalent to decimal 1234
 0x4d2     hexadecimal number, equivalent to decimal 1234

When using the C<chmod> command, you almost always want to specify an octal
number for the mode, and you must prefix it with C<0> (unlike the Unix
L<chmod(1)> program):

 chmod 0777 /public  # OK
 chmod 777 /public   # WRONG! This is mode 777 decimal = 01411 octal.

Commands that return numbers usually print them in decimal, but some
commands print numbers in other radices (eg. C<umask> prints the mode in
octal, preceded by C<0>).

=head1 WILDCARDS AND GLOBBING

Neither guestfish nor the underlying guestfs API performs wildcard expansion
(globbing) by default.  So for example the following will not do what you
expect:

 rm-rf /home/*

Assuming you don't have a directory called literally C</home/*> then the
above command will return an error.

To perform wildcard expansion, use the C<glob> command.

 glob rm-rf /home/*

runs C<rm-rf> on each path that matches (ie. potentially running the command
many times), equivalent to:

 rm-rf /home/jim
 rm-rf /home/joe
 rm-rf /home/mary

C<glob> only works on simple guest paths and not on device names.

If you have several parameters, each containing a wildcard, then glob will
perform a Cartesian product.

=head1 КОМЕНТАРІ

Any line which starts with a I<#> character is treated as a comment and
ignored.  The I<#> can optionally be preceded by whitespace, but B<not> by a
command.  For example:

 # this is a comment
         # this is a comment
 foo # NOT a comment

Blank lines are also ignored.

=head1 RUNNING COMMANDS LOCALLY

Any line which starts with a I<!> character is treated as a command sent to
the local shell (C</bin/sh> or whatever L<system(3)> uses).  For example:

 !mkdir local
 tgz-out /remote local/remote-data.tar.gz

will create a directory C<local> on the host, and then export the contents
of C</remote> on the mounted filesystem to C<local/remote-data.tar.gz>.
(See C<tgz-out>).

To change the local directory, use the C<lcd> command.  C<!cd> will have no
effect, due to the way that subprocesses work in Unix.

=head2 LOCAL COMMANDS WITH INLINE EXECUTION

If a line starts with I<E<lt>!> then the shell command is executed (as for
I<!>), but subsequently any output (stdout) of the shell command is parsed
and executed as guestfish commands.

Thus you can use shell script to construct arbitrary guestfish commands
which are then parsed by guestfish.

For example it is tedious to create a sequence of files (eg. C</foo.1>
through C</foo.100>) using guestfish commands alone.  However this is simple
if we use a shell script to create the guestfish commands for us:

 <! for n in `seq 1 100`; do echo write /foo.$n $n; done

or with names like C</foo.001>:

 <! for n in `seq 1 100`; do printf "write /foo.%03d %d\n" $n $n; done

When using guestfish interactively it can be helpful to just run the shell
script first (ie. remove the initial C<E<lt>> character so it is just an
ordinary I<!> local command), see what guestfish commands it would run, and
when you are happy with those prepend the C<E<lt>> character to run the
guestfish commands for real.

=head1 КАНАЛИ

Use C<command E<lt>spaceE<gt> | command> to pipe the output of the first
command (a guestfish command) to the second command (any host command).  For
example:

 cat /etc/passwd | awk -F: '$3 == 0 { print }'

(where C<cat> is the guestfish cat command, but C<awk> is the host awk
program).  The above command would list all accounts in the guest filesystem
which have UID 0, ie. root accounts including backdoors.  Other examples:

 hexdump /bin/ls | head
 list-devices | tail -1
 tgz-out / - | tar ztf -

The space before the pipe symbol is required, any space after the pipe
symbol is optional.  Everything after the pipe symbol is just passed
straight to the host shell, so it can contain redirections, globs and
anything else that makes sense on the host side.

To use a literal argument which begins with a pipe symbol, you have to quote
it, eg:

 echo "|"

=head1 HOME DIRECTORIES

If a parameter starts with the character C<~> then the tilde may be expanded
as a home directory path (either C<~> for the current user's home directory,
or C<~user> for another user).

Note that home directory expansion happens for users known I<on the host>,
not in the guest filesystem.

To use a literal argument which begins with a tilde, you have to quote it,
eg:

 echo "~"

=head1 ЗАШИФРОВАНІ ДИСКИ

Libguestfs has some support for Linux guests encrypted according to the
Linux Unified Key Setup (LUKS) standard, which includes nearly all whole
disk encryption systems used by modern Linux guests.  Currently only
LVM-on-LUKS is supported.

Identify encrypted block devices and partitions using L</vfs-type>:

 ><fs> vfs-type /dev/sda2
 crypto_LUKS

Then open those devices using L</luks-open>.  This creates a device-mapper
device called C</dev/mapper/luksdev>.

 ><fs> luks-open /dev/sda2 luksdev
 Enter key or passphrase ("key"): <enter the passphrase>

Finally you have to tell LVM to scan for volume groups on the newly created
mapper device:

 vgscan
 vg-activate-all true

The logical volume(s) can now be mounted in the usual way.

Before closing a LUKS device you must unmount any logical volumes on it and
deactivate the volume groups by calling C<vg-activate false VG> on each
one.  Then you can close the mapper device:

 vg-activate false /dev/VG
 luks-close /dev/mapper/luksdev

=head1 ШЛЯХИ У WINDOWS

If a path is prefixed with C<win:> then you can use Windows-style drive
letters and paths (with some limitations).  The following commands are
equivalent:

 file /WINDOWS/system32/config/system.LOG

 file win:\windows\system32\config\system.log

 file WIN:C:\Windows\SYSTEM32\CONFIG\SYSTEM.LOG

The parameter is rewritten "behind the scenes" by looking up the position
where the drive is mounted, prepending that to the path, changing all
backslash characters to forward slash, then resolving the result using
L</case-sensitive-path>.  For example if the E: drive was mounted on C</e>
then the parameter might be rewritten like this:

 win:e:\foo\bar => /e/FOO/bar

This only works in argument positions that expect a path.

=head1 ВИВАНТАЖЕННЯ ТА ОТРИМАННЯ ФАЙЛІВ

For commands such as C<upload>, C<download>, C<tar-in>, C<tar-out> and
others which upload from or download to a local file, you can use the
special filename C<-> to mean "from stdin" or "to stdout".  For example:

 upload - /foo

reads stdin and creates from that a file C</foo> in the disk image, and:

 tar-out /etc - | tar tf -

writes the tarball to stdout and then pipes that into the external "tar"
command (see L</PIPES>).

When using C<-> to read from stdin, the input is read up to the end of
stdin.  You can also use a special "heredoc"-like syntax to read up to some
arbitrary end marker:

 upload -<<END /foo
 input line 1
 input line 2
 input line 3
 END

Any string of characters can be used instead of C<END>.  The end marker must
appear on a line of its own, without any preceding or following characters
(not even spaces).

Note that the C<-E<lt>E<lt>> syntax only applies to parameters used to
upload local files (so-called "FileIn" parameters in the generator).

=head1 EXIT ON ERROR BEHAVIOUR

By default, guestfish will ignore any errors when in interactive mode
(ie. taking commands from a human over a tty), and will exit on the first
error in non-interactive mode (scripts, commands given on the command line).

If you prefix a command with a I<-> character, then that command will not
cause guestfish to exit, even if that (one) command returns an error.

=head1 REMOTE CONTROL GUESTFISH OVER A SOCKET

Guestfish can be remote-controlled over a socket.  This is useful
particularly in shell scripts where you want to make several different
changes to a filesystem, but you don't want the overhead of starting up a
guestfish process each time.

Start a guestfish server process using:

 eval "`guestfish --listen`"

and then send it commands by doing:

 guestfish --remote cmd [...]

To cause the server to exit, send it the exit command:

 guestfish --remote exit

Note that the server will normally exit if there is an error in a command.
You can change this in the usual way.  See section L</EXIT ON ERROR
BEHAVIOUR>.

=head2 CONTROLLING MULTIPLE GUESTFISH PROCESSES

The C<eval> statement sets the environment variable C<$GUESTFISH_PID>, which
is how the I<--remote> option knows where to send the commands.  You can
have several guestfish listener processes running using:

 eval "`guestfish --listen`"
 pid1=$GUESTFISH_PID
 eval "`guestfish --listen`"
 pid2=$GUESTFISH_PID
 ...
 guestfish --remote=$pid1 cmd
 guestfish --remote=$pid2 cmd

=head2 REMOTE CONTROL AND CSH

When using csh-like shells (csh, tcsh etc) you have to add the I<--csh>
option:

 eval "`guestfish --listen --csh`"

=head2 REMOTE CONTROL DETAILS

Remote control happens over a Unix domain socket called
C</tmp/.guestfish-$UID/socket-$PID>, where C<$UID> is the effective user ID
of the process, and C<$PID> is the process ID of the server.

Guestfish client and server versions must match exactly.

=head2 USING REMOTE CONTROL ROBUSTLY FROM SHELL SCRIPTS

From Bash, you can use the following code which creates a guestfish
instance, correctly quotes the command line, handles failure to start, and
cleans up guestfish when the script exits:

 #!/bin/bash -
 
 set -e
 
 guestfish[0]="guestfish"
 guestfish[1]="--listen"
 guestfish[2]="--ro"
 guestfish[3]="-a"
 guestfish[4]="disk.img"
 
 GUESTFISH_PID=
 eval $("${guestfish[@]}")
 if [ -z "$GUESTFISH_PID" ]; then
     echo "error: guestfish didn't start up, see error messages above"
     exit 1
 fi
 
 cleanup_guestfish ()
 {
     guestfish --remote -- exit >/dev/null 2>&1 ||:
 }
 trap cleanup_guestfish EXIT ERR
 
 guestfish --remote -- run
 
 # ...

=head2 REMOTE CONTROL RUN COMMAND HANGING

Using the C<run> (or C<launch>) command remotely in a command substitution
context hangs, ie. don't do (note the backquotes):

 a=`guestfish --remote run`

Since the C<run> command produces no output on stdout, this is not useful
anyway.  For further information see
L<https://bugzilla.redhat.com/show_bug.cgi?id=592910>.

=head1 PREPARED DISK IMAGES

Use the I<-N type> or I<--new type> parameter to select one of a set of
preformatted disk images that guestfish can make for you to save typing.
This is particularly useful for testing purposes.  This option is used
instead of the I<-a> option, and like I<-a> can appear multiple times (and
can be mixed with I<-a>).

The new disk is called C<test1.img> for the first I<-N>, C<test2.img> for
the second and so on.  Existing files in the current directory are
I<overwritten>.

The type briefly describes how the disk should be sized, partitioned, how
filesystem(s) should be created, and how content should be added.
Optionally the type can be followed by extra parameters, separated by C<:>
(colon) characters.  For example, I<-N fs> creates a default 100MB,
sparsely-allocated disk, containing a single partition, with the partition
formatted as ext2.  I<-N fs:ext4:1G> is the same, but for an ext4 filesystem
on a 1GB disk instead.

To list the available types and any extra parameters they take, run:

 guestfish -N help | less

Note that the prepared filesystem is not mounted.  You would usually have to
use the C<mount /dev/sda1 /> command or add the I<-m /dev/sda1> option.

If any I<-N> or I<--new> options are given, the guest is automatically
launched.

=head2 ПРИКЛАДИ

Create a 100MB disk with an ext4-formatted partition:

 guestfish -N fs:ext4

Create a 32MB disk with a VFAT-formatted partition, and mount it:

 guestfish -N fs:vfat:32M -m /dev/sda1

Create a blank 200MB disk:

 guestfish -N disk:200M

=head1 PROGRESS BARS

Some (not all) long-running commands send progress notification messages as
they are running.  Guestfish turns these messages into progress bars.

When a command that supports progress bars takes longer than two seconds to
run, and if progress bars are enabled, then you will see one appearing below
the command:

 ><fs> copy-size /large-file /another-file 2048M
 / 10% [#####-----------------------------------------] 00:30

The spinner on the left hand side moves round once for every progress
notification received from the backend.  This is a (reasonably) golden
assurance that the command is "doing something" even if the progress bar is
not moving, because the command is able to send the progress notifications.
When the bar reaches 100% and the command finishes, the spinner disappears.

Progress bars are enabled by default when guestfish is used interactively.
You can enable them even for non-interactive modes using I<--progress-bars>,
and you can disable them completely using I<--no-progress-bars>.

=head1 GUESTFISH COMMANDS

The commands in this section are guestfish convenience commands, in other
words, they are not part of the L<guestfs(3)> API.

=head2 help

 help
 help команда

Без параметра показує загальну довідкову інформацію.

With a C<cmd> parameter, this displays detailed help for that command.

=head2 quit | exit

This exits guestfish.  You can also use C<^D> key.

@FISH_COMMANDS@

=head1 КОМАНДИ

@ACTIONS@

=head1 СТАН ВИХОДУ

guestfish returns 0 if the commands completed without error, or 1 if there
was an error.

=head1 ЗМІННІ СЕРЕДОВИЩА

=over 4

=item РЕДАКТОР

The C<edit> command uses C<$EDITOR> as the editor.  If not set, it uses
C<vi>.

=item FEBOOTSTRAP_KERNEL

=item FEBOOTSTRAP_MODULES

These two environment variables allow the kernel that libguestfs uses in the
appliance to be selected.  If C<$FEBOOTSTRAP_KERNEL> is not set, then the
most recent host kernel is chosen.  For more information about kernel
selection, see L<febootstrap-supermin-helper(8)>.  This feature is only
available in febootstrap E<ge> 3.8.

=item GUESTFISH_DISPLAY_IMAGE

The C<display> command uses C<$GUESTFISH_DISPLAY_IMAGE> to display images.
If not set, it uses L<display(1)>.

=item GUESTFISH_PID

Used with the I<--remote> option to specify the remote guestfish process to
control.  See section L</REMOTE CONTROL GUESTFISH OVER A SOCKET>.

=item HEXEDITOR

The L</hexedit> command uses C<$HEXEDITOR> as the external hex editor.  If
not specified, the external L<hexedit(1)> program is used.

=item ДОМІВКА

If compiled with GNU readline support, various files in the home directory
can be used.  See L</FILES>.

=item LIBGUESTFS_APPEND

Pass additional options to the guest kernel.

=item LIBGUESTFS_DEBUG

Set C<LIBGUESTFS_DEBUG=1> to enable verbose messages.  This has the same
effect as using the B<-v> option.

=item LIBGUESTFS_MEMSIZE

Set the memory allocated to the qemu process, in megabytes.  For example:

 LIBGUESTFS_MEMSIZE=700

=item LIBGUESTFS_PATH

Set the path that guestfish uses to search for kernel and initrd.img.  See
the discussion of paths in L<guestfs(3)>.

=item LIBGUESTFS_QEMU

Set the default qemu binary that libguestfs uses.  If not set, then the qemu
which was found at compile time by the configure script is used.

=item LIBGUESTFS_TRACE

Set C<LIBGUESTFS_TRACE=1> to enable command traces.

=item РОЗБИТТЯ НА СТОРІНКИ

The C<more> command uses C<$PAGER> as the pager.  If not set, it uses
C<more>.

=item TMPDIR

Location of temporary directory, defaults to C</tmp> except for the cached
supermin appliance which defaults to C</var/tmp>.

If libguestfs was compiled to use the supermin appliance then the real
appliance is cached in this directory, shared between all handles belonging
to the same EUID.  You can use C<$TMPDIR> to configure another directory to
use in case C</var/tmp> is not large enough.

=back

=head1 ФАЙЛИ

=over 4

=item $HOME/.libguestfs-tools.rc

=item /etc/libguestfs-tools.conf

This configuration file controls the default read-only or read-write mode
(I<--ro> or I<--rw>).

Див. L</OPENING DISKS FOR READ AND WRITE>.

=item $HOME/.guestfish

If compiled with GNU readline support, then the command history is saved in
this file.

=item $HOME/.inputrc

=item /etc/inputrc

If compiled with GNU readline support, then these files can be used to
configure readline.  For further information, please see
L<readline(3)/INITIALIZATION FILE>.

To write rules which only apply to guestfish, use:

 $if guestfish
 ...
 $endif

Variables that you can set in inputrc that change the behaviour of guestfish
in useful ways include:

=over 4

=item completion-ignore-case (default: on)

By default, guestfish will ignore case when tab-completing paths on the
disk.  Use:

 set completion-ignore-case off

to make guestfish case sensitive.

=back

=item test1.img

=item test2.img (etc)

When using the I<-N> or I<--new> option, the prepared disk or filesystem
will be created in the file C<test1.img> in the current directory.  The
second use of I<-N> will use C<test2.img> and so on.  Any existing file with
the same name will be overwritten.

=back

=head1 ТАКОЖ ПЕРЕГЛЯНЬТЕ

L<guestfs(3)>, L<http://libguestfs.org/>, L<virt-alignment-scan(1)>,
L<virt-cat(1)>, L<virt-copy-in(1)>, L<virt-copy-out(1)>, L<virt-df(1)>,
L<virt-edit(1)>, L<virt-filesystems(1)>, L<virt-inspector(1)>,
L<virt-list-filesystems(1)>, L<virt-list-partitions(1)>, L<virt-ls(1)>,
L<virt-make-fs(1)>, L<virt-rescue(1)>, L<virt-resize(1)>,
L<virt-sparsify(1)>, L<virt-sysprep(1)>, L<virt-tar(1)>, L<virt-tar-in(1)>,
L<virt-tar-out(1)>, L<virt-win-reg(1)>, L<display(1)>, L<hexedit(1)>,
L<febootstrap-supermin-helper(8)>.

=head1 АВТОРИ

Richard W.M. Jones (C<rjones at redhat dot com>)

=head1 АВТОРСЬКІ ПРАВА

© Red Hat Inc., 2009–2012 L<http://libguestfs.org/>

Ця програма є вільним програмним забезпеченням; ви можете поширювати та/або
змінювати її за умов дотримання GNU General Public License  утому вигляді,
що оприлюднений Free Software Foundation; версії 2 цієї Ліцензії, або (якщо
забажаєте) будь-якої випущеної пізніше.

Ця програма поширюється у сподіванні, що вона буде корисною, але БЕЗ
БУДЬ-ЯКИХ ГАРАНТІЙНИХ ЗОБОВ’ЯЗАНЬ; навіть без очевидної гарантії
ПРАЦЕЗДАТНОСТІ або ПРИДАТНОСТІ ДЛЯ ВИКОРИСТАННЯ З ПЕВНОЮ МЕТОЮ. Докладніше
про це можна дізнатися з GNU General Public License.

Ви маєте отримати копію GNU General Public License разом з цією програмою;
якщо це не так, повідомте про факт за адресою Free Software Foundation,
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