Provided by: libguestfs-tools_1.36.13-1ubuntu3_amd64 bug


       virt-get-kernel - Extract kernel and ramdisk from guests


        virt-get-kernel [--options] -d domname

        virt-get-kernel [--options] -a disk.img


       This option extracts the kernel and initramfs from a guest.

       The format of the disk image is automatically detected unless you specify it by using the
       --format option.

       In the case where the guest contains multiple kernels, the one with the highest version
       number is chosen.  To extract arbitrary kernels from the disk image, see guestfish(1).  To
       extract the entire "/boot" directory of a guest, see virt-copy-out(1).



       -a file
       --add file
           仮想マシンからディスクイメージの file を追加します。

           --format オプションを使用します。

       -a URI
       --add URI
           Add a remote disk.  The URI format is compatible with guestfish.  See "ADDING REMOTE
           STORAGE" in guestfish(1).

           Use ANSI colour sequences to colourize messages.  This is the default when the output
           is a tty.  If the output of the program is redirected to a file, ANSI colour sequences
           are disabled unless you use this option.

       -c URI
       --connect URI
           libvirt を使用していると、指定された URI に接続します。  省略すると、デフォルトの
           libvirt ハイパーバイザーに接続します。

           ゲストのブロックデバイスを直接指定していると((-a))、libvirt は何も使用されません。

       -d guest
       --domain guest
           名前付きの libvirt 仮想マシンからすべてのディスクを追加します。  名前の代わりに仮想マ
           シンの UUID を使用できます。

           When prompting for keys and passphrases, virt-get-kernel 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.

       --format raw|qcow2|..
       --format auto
           The default for the -a option is to auto-detect the format of the disk image.  Using
           this forces the disk format for the -a option on the command line.

           仮想マシンのディスクイメージが信頼できない raw 形式である場合、 ディスク形式を指定する
           ためにこのオプションを使用すべきです。 これにより、悪意のある仮想マシンにより起こり得
           る セキュリティ問題を回避できます (CVE-2010-3851)。

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

           るために使用されます。以下の "マシン可読な出力" 参照。

       -o directory
       --output directory
           This option specifies the output directory where kernel and initramfs from the guest
           are written.

           If not specified, the default output is the current directory.

       --prefix prefix
           This option specifies a prefix for the extracted files.

           If a prefix is specified, then there will be a dash ("-") after the prefix and before
           the rest of the file name; for example, a kernel in the guest like
           "vmlinuz-3.19.0-20-generic" is saved as "mydistro-vmlinuz-3.19.0-20-generic" when the
           prefix is "mydistro".

           See also --unversioned-names.

           Don't print ordinary progress messages.

           This option affects the destination file name of extracted files.

           If enabled, files will be saved locally just with the base name; for example, kernel
           and ramdisk in the guest like "vmlinuz-3.19.0-20-generic" and
           "initrd.img-3.19.0-20-generic" are saved respectively as "vmlinuz" and "initrd.img".

           See also --prefix.



       -x  libguestfs API 呼び出しのトレースを有効にします。


       The --machine-readable option can be used to make the output more machine friendly, which
       is useful when calling virt-get-kernel from other programs, GUIs etc.

       Use the option on its own to query the capabilities of the virt-get-kernel binary.
       Typical output looks like this:

        $ virt-get-kernel --machine-readable

       A list of features is printed, one per line, and the program exits with status 0.


       For other environment variables which affect all libguestfs programs, see "ENVIRONMENT
       VARIABLES" in guestfs(3).


       このプログラムは、成功すると 0 を、エラーがあると 0 以外を返します。


       guestfs(3), guestfish(1), guestmount(1), virt-copy-out(1),


       Richard W.M. Jones


       Copyright (C) 2013-2017 Red Hat Inc.



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