™.. virt-ls - Online Linux Manual PageSection : 1
Updated : 2013-08-27
Source : libguestfs-1.20.11
Note : Virtualization Support
NAMEvirt−ls − List files in a virtual machine
SYNOPSIS​ virt−ls [−−options] −d domname directory [directory ...] ​ ​ virt−ls [−−options] −a disk.img [−a disk.img ...] directory [directory ...] Old style: ​ virt−ls [−−options] domname directory ​ ​ virt−ls [−−options] disk.img [disk.img ...] directory
DESCRIPTION​\*(C`virt\-ls\*(C'\fR lists filenames, file sizes, checksums, extended attributes and more from a virtual machine or disk image. Multiple directory names can be given, in which case the output from each is concatenated. To list directories from a libvirt guest use the −d option to specify the name of the guest. For a disk image, use the −a option. ​\*(C`virt\-ls\*(C'\fR can do many simple file listings. For more complicated cases you may need to use guestfish (1), or write a program directly to the guestfs (3) API.
EXAMPLESGet a list of all files and directories in a virtual machine: ​ virt−ls −R −d guest / List all setuid or setgid programs in a Linux virtual machine: ​ virt−ls −lR −d guest / | grep '^− [42]' List all public-writable directories in a Linux virtual machine: ​ virt−ls −lR −d guest / | grep '^d ...7' List all Unix domain sockets in a Linux virtual machine: ​ virt−ls −lR −d guest / | grep '^s' List all regular files with filenames ending in '.png': ​ virt−ls −lR −d guest / | grep −i '^−.*\.png$' To display files larger than 10MB in home directories: ​ virt−ls −lR −d guest /home | awk '$3 > 10*1024*1024' Find everything modified in the last 7 days: ​ virt−ls −lR −d guest −−time−days / | awk '$6 <= 7' Find regular files modified in the last 24 hours: ​ virt−ls −lR −d guest −−time−days / | grep '^−' | awk '$6 < 1'
DIFFERENCES IN SNAPSHOTS AND BACKING FILESFind the differences between files in a guest and an earlier snapshot of the same guest. ​ virt−ls −lR −a snapshot.img / −−uids −−time−t > old ​ virt−ls −lR −a current.img / −−uids −−time−t > new ​ diff −u old new | less The commands above won't find files where the content has changed but the metadata (eg. file size and modification date) is the same. To do that, you need to add the −−checksum parameter to both \*(C`virt\-ls\*(C'\fR commands. −−checksum can be quite slow since it has to read and compute a checksum of every regular file in the virtual machine.
OUTPUT MODES​\*(C`virt\-ls\*(C'\fR has four output modes, controlled by different combinations of the −l and −R options.
SIMPLE LISTINGA simple listing is like the ordinary ls (1) command: ​ $ virt−ls −d guest / ​ bin ​ boot ​ [etc.]
LONG LISTINGWith the −l (−−long) option, the output is like the \*(C`ls \-l\*(C'\fR command (more specifically, like the \*(C`guestfs_ll\*(C'\fR function). ​ $ virt−ls −l −d guest / ​ total 204 ​ dr−xr−xr−x. 2 root root 4096 2009−08−25 19:06 bin ​ dr−xr−xr−x. 5 root root 3072 2009−08−25 19:06 boot ​ [etc.] Note that while this is useful for displaying a directory, do not try parsing this output in another program. Use ‟RECURSIVE LONG LISTING” instead.
RECURSIVE LISTINGWith the −R (−−recursive) option, \*(C`virt\-ls\*(C'\fR lists the names of files and directories recursively: ​ $ virt−ls −R −d guest /tmp ​ foo ​ foo/bar ​ [etc.] To generate this output, \*(C`virt\-ls\*(C'\fR runs the \f(CW\*(C`guestfs_find0\*(C'\fR function and converts \*(C`\e0\*(C'\fR characters to \f(CW\*(C`\en\*(C'\fR.
RECURSIVE LONG LISTINGUsing −lR options together changes the output to display directories recursively, with file stats, and optionally other features such as checksums and extended attributes. Most of the interesting features of \*(C`virt\-ls\*(C'\fR are only available when using −lR mode. The fields are normally space-separated. Filenames are not quoted, so you cannot use the output in another program (because filenames can contain spaces and other unsafe characters). If the guest was untrusted and someone knew you were using \*(C`virt\-ls\*(C'\fR to analyze the guest, they could play tricks on you by creating filenames with embedded newline characters. To safely parse the output in another program, use the −−csv (Comma-Separated Values) option. Note that this output format is completely unrelated to the \*(C`ls \-lR\*(C'\fR command. ​ $ virt−ls −lR −d guest /bin ​ d 0555 4096 /bin ​ − 0755 123 /bin/alsaunmute ​ − 0755 28328 /bin/arch ​ l 0777 4 /bin/awk −> gawk ​ − 0755 27216 /bin/basename ​ − 0755 943360 /bin/bash ​ [etc.] These basic fields are always shown: type The file type, one of: ​\*(C`\-\*(C'\fR (regular file), ​\*(C`d\*(C'\fR (directory), ​\*(C`c\*(C'\fR (character device), ​\*(C`b\*(C'\fR (block device), ​\*(C`p\*(C'\fR (named pipe), ​\*(C`l\*(C'\fR (symbolic link), ​\*(C`s\*(C'\fR (socket) or ​\*(C`u\*(C'\fR (unknown). permissions The Unix permissions, displayed as a 4 digit octal number. size The size of the file. This is shown in bytes unless −h or ​−−human−readable option is given, in which case this is shown as a human-readable number. path The full path of the file or directory. link For symbolic links only, the link target. In −lR mode, additional command line options enable the display of more fields. With the −−uids flag, these additional fields are displayed before the path: uid gid The UID and GID of the owner of the file (displayed numerically). Note these only make sense in the context of a Unix-like guest. With the −−times flag, these additional fields are displayed: atime The time of last access. mtime The time of last modification. ctime The time of last status change. The time fields are displayed as string dates and times, unless one of the −−time−t, −−time−relative or −−time−days flags is given. With the −−extra−stats flag, these additional fields are displayed: device The device containing the file (displayed as major:minor). This may not match devices as known to the guest. inode The inode number. nlink The number of hard links. rdev For block and char special files, the device (displayed as major:minor). blocks The number of 512 byte blocks allocated to the file. With the −−checksum flag, the checksum of the file contents is shown (only for regular files). Computing file checksums can take a considerable amount of time.
OPTIONS−−help Display brief help. −a file −−add file Add file which should be a disk image from a virtual machine. If the virtual machine has multiple block devices, you must supply all of them with separate −a options. The format of the disk image is auto-detected. To override this and force a particular format use the −−format=.. option. −−checksum −−checksum=crc|md5|sha1|sha224|sha256|sha384|sha512 Display checksum over file contents for regular files. With no argument, this defaults to using md5. Using an argument, you can select the checksum type to use. This option only has effect in −lR output mode. See ​‟RECURSIVE LONG LISTING” above. −c URI −−connect URI If using libvirt, connect to the given URI. If omitted, then we connect to the default libvirt hypervisor. If you specify guest block devices directly (−a), then libvirt is not used at all. −−csv Write out the results in CSV format (comma-separated values). This format can be imported easily into databases and spreadsheets, but read ‟NOTE ABOUT CSV FORMAT” below. −d guest −−domain guest Add all the disks from the named libvirt guest. Domain UUIDs can be used instead of names. −−echo−keys When prompting for keys and passphrases, virt-ls 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. −−extra−stats Display extra stats. This option only has effect in −lR output mode. See ​‟RECURSIVE LONG LISTING” above. −−format=raw|qcow2|.. −−format The default for the −a option is to auto-detect the format of the disk image. Using this forces the disk format for −a options which follow on the command line. Using −−format with no argument switches back to auto-detection for subsequent −a options. For example: ​ virt−ls −−format=raw −a disk.img /dir forces raw format (no auto-detection) for \*(C`disk.img\*(C'\fR. ​ virt−ls −−format=raw −a disk.img −−format −a another.img /dir forces raw format (no auto-detection) for \*(C`disk.img\*(C'\fR and reverts to auto-detection for \*(C`another.img\*(C'\fR. 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). −h −−human−readable Display file sizes in human-readable format. This option only has effect in −lR output mode. See ​‟RECURSIVE LONG LISTING” above. −−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\*(C'\fR. −l −−long −R −−recursive Select the mode. With neither of these options, \*(C`virt\-ls\*(C'\fR produces a simple, flat list of the files in the named directory. See ​‟SIMPLE LISTING”. ​\*(C`virt\-ls \-l\*(C'\fR produces a \*(L"long listing\*(R", which shows more detail. See ​‟LONG LISTING”. ​\*(C`virt\-ls \-R\*(C'\fR produces a recursive list of files starting at the named directory. See ‟RECURSIVE LISTING”. ​\*(C`virt\-ls \-lR\*(C'\fR produces a recursive long listing which can be more easily parsed. See ‟RECURSIVE LONG LISTING”. −−times Display time fields. This option only has effect in −lR output mode. See ​‟RECURSIVE LONG LISTING” above. −−time−days Display time fields as days before now (negative if in the future). Note that 0 in output means ‟up to 1 day before now”, or that the age of the file is between 0 and 86399 seconds. This option only has effect in −lR output mode. See ​‟RECURSIVE LONG LISTING” above. −−time−relative Display time fields as seconds before now (negative if in the future). This option only has effect in −lR output mode. See ​‟RECURSIVE LONG LISTING” above. −−time−t Display time fields as seconds since the Unix epoch. This option only has effect in −lR output mode. See ​‟RECURSIVE LONG LISTING” above. −−uids Display UID and GID fields. This option only has effect in −lR output mode. See ​‟RECURSIVE LONG LISTING” above. −v −−verbose Enable verbose messages for debugging. −V −−version Display version number and exit. −x Enable tracing of libguestfs API calls.
OLD-STYLE COMMAND LINE ARGUMENTSPrevious versions of virt-ls allowed you to write either: ​ virt−ls disk.img [disk.img ...] /dir or ​ virt−ls guestname /dir whereas in this version you should use −a or −d respectively to avoid the confusing case where a disk image might have the same name as a guest. For compatibility the old style is still supported.
NOTE ABOUT CSV FORMATComma-separated values (CSV) is a deceptive format. It seems like it should be easy to parse, but it is definitely not easy to parse. Myth: Just split fields at commas. Reality: This does not work reliably. This example has two columns: ​ "foo,bar",baz Myth: Read the file one line at a time. Reality: This does not work reliably. This example has one row: ​ "foo ​ bar",baz For shell scripts, use \*(C`csvtool\*(C'\fR (http://merjis.com/developers/csv also packaged in major Linux distributions). For other languages, use a CSV processing library (eg. \*(C`Text::CSV\*(C'\fR for Perl or Python's built-in csv library). Most spreadsheets and databases can import CSV directly.
SHELL QUOTINGLibvirt guest names can contain arbitrary characters, some of which have meaning to the shell such as \*(C`#\*(C'\fR and space. You may need to quote or escape these characters on the command line. See the shell manual page sh (1) for details.
EXIT STATUSThis program returns 0 if successful, or non-zero if there was an error.
SEE ALSO​guestfs (3), ​guestfish (1), ​virt−cat (1), ​virt−copy−out (1), ​virt−tar−out (1), http://libguestfs.org/.
AUTHORRichard W.M. Jones http://people.redhat.com/~rjones/
COPYRIGHTCopyright (C) 2009−2013 Red Hat Inc.
LICENSEThis program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but ​WITHOUT ANY WARRANTY; without even the implied warranty of ​MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110−1301 USA.
BUGSTo get a list of bugs against libguestfs, use this link: https://bugzilla.redhat.com/buglist.cgi?component=libguestfs&product=Virtualization+Tools To report a new bug against libguestfs, use this link: https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Virtualization+Tools When reporting a bug, please supply: • The version of libguestfs. • Where you got libguestfs (eg. which Linux distro, compiled from source, etc) • Describe the bug accurately and give a way to reproduce it. • Run libguestfs−test−tool (1) and paste the complete, unedited output into the bug report. 0
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With neither of these options, \f(CW\*(C`virt\-ls\*(C'\fR produces a )         (rof_escape_sequence|91|virt-ls.1|441|\*(C`virt\-ls \-l\*(C'\fR produces a \*(L"long listing\*(R", which shows more detail. See |\&\f(CW\*(C`virt\-ls \-l\*(C'\fR produces a \*(L"long listing\*(R", which shows more detail. See )         (rof_escape_sequence|91|virt-ls.1|444|\*(C`virt\-ls \-R\*(C'\fR produces a recursive list of files starting at the named |\&\f(CW\*(C`virt\-ls \-R\*(C'\fR produces a recursive list of files starting at the named )         (rof_escape_sequence|91|virt-ls.1|447|\*(C`virt\-ls \-lR\*(C'\fR produces a recursive long listing which can be more |\&\f(CW\*(C`virt\-ls \-lR\*(C'\fR produces a recursive long listing which can be more )         (rof_escape_sequence|91|virt-ls.1|538|\*(C`csvtool\*(C'\fR (http://merjis.com/developers/csv |For shell scripts, use \f(CW\*(C`csvtool\*(C'\fR (http://merjis.com/developers/csv )         (rof_escape_sequence|91|virt-ls.1|541|\*(C`Text::CSV\*(C'\fR |For other languages, use a \s-1CSV\s0 processing library (eg. \f(CW\*(C`Text::CSV\*(C'\fR )         (rof_escape_sequence|91|virt-ls.1|548|\*(C`#\*(C'\fR and space. You may need to |have meaning to the shell such as \f(CW\*(C`#\*(C'\fR and space. You may need to )