在 linux 下 VirtualBox 的管理操作都是通过 VBoxManage 这个命令进行的，可以通过 -h 选项查看相关的操作，如：

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~$ VBoxManage -h
Oracle VM VirtualBox Command Line Management Interface Version 5.2.18
(C) 2005-2018 Oracle Corporation
All rights reserved.

Usage:

  VBoxManage [<general option>] <command>


General Options:

  [-v|--version]            print version number and exit
  [-q|--nologo]             suppress the logo
  [--settingspw <pw>]       provide the settings password
  [--settingspwfile <file>] provide a file containing the settings password
  [@<response-file>]        load arguments from the given response file (bourne style)


Commands:

  list [--long|-l] [--sorted|-s]          vms|runningvms|ostypes|hostdvds|hostfloppies|
                            intnets|bridgedifs|hostonlyifs|natnets|dhcpservers|
                            hostinfo|hostcpuids|hddbackends|hdds|dvds|floppies|
                            usbhost|usbfilters|systemproperties|extpacks|
                            groups|webcams|screenshotformats
...

~$ VBoxManage help list
Oracle VM VirtualBox Command Line Management Interface Version 5.2.18
(C) 2005-2018 Oracle Corporation
All rights reserved.

Usage:

VBoxManage list [--long|-l] [--sorted|-s] vms|runningvms|ostypes|hostdvds|hostfloppies|
                            intnets|bridgedifs|hostonlyifs|natnets|dhcpservers|
                            hostinfo|hostcpuids|hddbackends|hdds|dvds|floppies|
                            usbhost|usbfilters|systemproperties|extpacks|
                            groups|webcams|screenshotformats

VirtualBox 有很完善的随机文档，在 VirtualBox 界面（当然需要桌面系统）按 F1 或者找到帮助菜单即可打开相应的帮助文档，如下所示：