Section 1: user commands and tools
vltsv – mutual converter between TSV and Villa database Synopsisvltsv import [-bin] name vltsv export [-bin] name DescriptionThis manual page documents briefly the vltsv commands. The command vltsv features mutual conversion between a database of Villa and a TSV text. This command is useful when data exchange with another version of QDBM or another DBM,…
vltest – test cases for QDBM Villa Synopsisvltest write [-int] [-cz|-cy|-cx] [-tune lrecmax nidxmax lcnum ncnum] [-fbp num] name rnum vltest read [-int] name vltest rdup [-int] [-cz|-cy|-cx] [-cc] [-tune lrecmax nidxmax lcnum ncnum] [-fbp num] name rnum pnum vltest combo [-cz|-cy|-cx] name vltest wicked [-c] [-cz|-cy|-cx] name rnum DescriptionThe command `vltest’ is a utility…
vlock – Virtual Console lock program Synopsisvlock [ -hv ] vlock [ -acns ] [ -t <timeout> ] [ plugins… ] Descriptionvlock is a program to lock one or more sessions on the Linux console. This is especially useful for Linux machines which have multiple users with access to the console. One user may lock…
vlna – adds tilde after each non-syllabic preposition Usagevlna [options] [filenames] PrefaceThere exists a special Czech and Slovak typographical rule: you cannot leave the non-syllabic preposition on the end of one line and continue writting text on next line. For example, you cannot write down the text "v lese" (in a forest) like "v<new-line>lese". The…
vlmgr – administration utility for QDBM Villa Synopsisvlmgr create [-cz|-cy|-cx] name vlmgr put [-kx|-ki] [-vx|-vi|-vf] [-keep|-cat|-dup] name key val vlmgr out [-l] [-kx|-ki] name key vlmgr get [-nl] [-l] [-kx|-ki] [-ox] [-n] name key vlmgr list [-nl] [-k|-v] [-kx|-ki] [-ox] [-top key] [-bot key] [-gt] [-lt] [-max num] [-desc] name vlmgr optimize name vlmgr inform…
vlc, qvlc, svlc, nvlc, rvlc, cvlc – the VLC media player Synopsisvlc [OPTIONS] [ITEMS]… DescriptionThis manual page documents briefly the VLC multimedia player and server. OptionsVLC follows the usual GNU command line syntax, with long options starting with two dashes (`-‘). For a precise description of options, please use "vlc –help". The complete list of…
vlc-wrapper – a wrapper to drop privileges with VLC Synopsisvlc-wrapper [OPTIONS] DescriptionThis manual page documents briefly the VLC wrapper to open privileged network ports. The ports it can open are 80, 443 and 554. OptionsThey will be passed to VLC with no modification. UsageThe preferred way is to use sudo : $ sudo vlc-wrapper –option1…
virtfs-proxy-helper – QEMU 9p virtfs proxy filesystem helper Synopsisvirtfs-proxy-helper options DescriptionPass-through security model in QEMU 9p server needs root privilege to do few file operations (like chown, chmod to any mode/uid:gid). There are two issues in pass-through security model 1) TOCTTOU vulnerability: Following symbolic links in the server could provide access to files beyond 9p…
virtdetect — Detect if this system is running as a virtual machine Synopsisvirtdetect [ –verbose ] [ –detect-host ] DescriptionAttempts to determine if this system is running under some form of virtualization. If –verbose is enabled, each check will be output. Otherwise, only the result will be output. if –detect-host is enabled, try and detect…
virt-xml – Edit libvirt XML using command line options. Synopsisvirt-xml DOMAIN XML-ACTION XML-OPTION [OUTPUT-OPTION] [MISC-OPTIONS] … Descriptionvirt-xml is a command line tool for editing libvirt XML using explicit command line options. See the EXAMPLES section at the end of this document to jump right in. Each virt-xml invocation requires 3 things: name of an existing…
virt-xml-validate – validate libvirt XML files against a schema Synopsisvirt-xml-validate XML-FILE [SCHEMA-NAME] virt-xml-validate OPTION DescriptionValidates a libvirt XML for compliance with the published schema. The first compulsory argument is the path to the XML file to be validated. The optional second argument is the name of the schema to validate against. If omitted, the schema…
virt-win-reg – Export and merge Windows Registry entries from a Windows guest Synopsis virt-win-reg domname ‘HKLM\Path\To\Subkey’ virt-win-reg domname ‘HKLM\Path\To\Subkey’ name virt-win-reg domname ‘HKLM\Path\To\Subkey’ @ virt-win-reg –merge domname [input.reg …] virt-win-reg [–options] disk.img … # instead of domnameWarningYou must not use "virt-win-reg" with the –merge option on live virtual machines. If you do this, you will…
virt-what – detect if we are running in a virtual machine Summaryvirt-what [options] Description"virt-what" is a shell script which can be used to detect if the program is running in a virtual machine. The program prints out a list of “facts” about the virtual machine, derived from heuristics. One fact is printed per line. If…
virt-viewer – display the graphical console for a virtual machine Synopsisvirt-viewer [OPTIONS] — DOMAIN-NAME|ID|UUID Descriptionvirt-viewer is a minimal tool for displaying the graphical console of a virtual machine. The console is accessed using the VNC or SPICE protocol. The guest can be referred to based on its name, ID, or UUID. If the guest is…
virt-v2v – Convert a guest to use KVM Synopsis virt-v2v -ic vpx://vcenter.example.com/Datacenter/esxi vmware_guest virt-v2v -ic vpx://vcenter.example.com/Datacenter/esxi vmware_guest \ -o rhev -os rhev.nfs:/export_domain –network rhevm virt-v2v -i libvirtxml guest-domain.xml -o local -os /var/tmp virt-v2v -i disk disk.img -o local -os /var/tmp virt-v2v -i disk disk.img -o glanceDescriptionVirt-v2v converts guests from a foreign hypervisor to run on…
virt-v2v-copy-to-local – Copy a remote guest to the local machine Synopsis virt-v2v-copy-to-local -ic LIBVIRT_URI GUEST virt-v2v-copy-to-local -ic xen+ssh://root@xen.example.com xen_guest virt-v2v-copy-to-local -ic esx://root@esxi.example.com vmware_guestDescription"virt-v2v-copy-to-local" copies a guest from a remote hypervisor to the local machine, in preparation for conversion by virt-v2v(1). Note this tool alone does not do the virt-v2v conversion. When to use this toolThis…
virt-top – ‘top’-like utility for virtualization stats Summaryvirt-top [-options] Descriptionvirt-top is a top(1)-like utility for showing stats of virtualized domains. Many keys and command line options are the same as for ordinary top. It uses libvirt so it is capable of showing stats across a variety of different virtualization systems. Options-1 Display physical CPUs by…
virt-tar – Extract or upload files to a virtual machine Synopsis virt-tar [–options] -x domname directory tarball virt-tar [–options] -u domname tarball directory virt-tar [–options] disk.img [disk.img …] -x directory tarball virt-tar [–options] disk.img [disk.img …] -u tarball directoryExamplesDownload "/home" from the VM into a local tarball: virt-tar -x domname /home home.tar virt-tar -zx domname…
virt-tar-out – Pack a virtual machine disk image directory into a tarball. Synopsis virt-tar-out -a disk.img /dir files.tar virt-tar-out -d domain /dir files.tar virt-tar-out -d domain /dir – | gzip –best > files.tar.gzDescription"virt-tar-out" packs a virtual machine disk image directory into a tarball. The first parameter is the absolute path of the virtual machine directory….
virt-tar-in – Unpack a tarball into a virtual machine disk image. Synopsis virt-tar-in -a disk.img data.tar /destination virt-tar-in -d domain data.tar /destination zcat data.tar.gz | virt-tar-in -d domain – /destinationWarningUsing "virt-tar-in" on live virtual machines, or concurrently with other disk editing tools, can be dangerous, potentially causing disk corruption. The virtual machine must be shut…