dpkg-query(1)                     dpkg suite                     dpkg-query(1)

       dpkg-query - a tool to query the dpkg database

       dpkg-query [option...] command

       dpkg-query  is  a tool to show information about packages listed in the
       dpkg database.

       -l, --list [package-name-pattern...]
              List  all  known  packages  matching  one  or   more   patterns,
              regardless  of  their status, which includes any real or virtual
              package referenced in any dependency relationship field (such as
              Breaks,  Enhances,  etc.).  If no package-name-pattern is given,
              list all packages in /var/lib/dpkg/status,  excluding  the  ones
              marked  as not-installed (i.e.  those which have been previously
              purged).   Normal  shell  wildcard  characters  are  allowed  in
              package-name-pattern.   Please  note  you  will probably have to
              quote package-name-pattern to prevent the shell from  performing
              filename  expansion.   For  example  this  will list all package
              names starting with "libc6":

                dpkg-query -l 'libc6*'

              The first three columns of the output show the  desired  action,
              the package status, and errors, in that order.

              Desired action:
                u = Unknown
                i = Install
                h = Hold
                r = Remove
                p = Purge

              Package status:
                n = Not-installed
                c = Config-files
                H = Half-installed
                U = Unpacked
                F = Half-configured
                W = Triggers-awaiting
                t = Triggers-pending
                i = Installed

              Error flags:
                <empty> = (none)
                R = Reinst-required

              An  uppercase  status  or  error letter indicates the package is
              likely to cause severe problems. Please  refer  to  dpkg(1)  for
              information about the above states and flags.

              The output format of this option is not configurable, but varies
              automatically to fit the terminal  width.  It  is  intended  for
              human  readers,  and  is  not  easily  machine-readable.  See -W
              (--show) and --showformat for a  way  to  configure  the  output

       -W, --show [package-name-pattern...]
              Just like the --list option this will list all packages matching
              the given pattern. However the output can  be  customized  using
              the  --showformat  option.   The default output format gives one
              line per matching package, each line having the  name  (extended
              with  the  architecture  qualifier for Multi-Arch same packages)
              and installed version of the package, separated by a tab.

       -s, --status [package-name...]
              Report status of specified package. This just displays the entry
              in the installed package status database.  If no package-name is
              specified it will display all  package  entries  in  the  status
              database   (since  dpkg  1.19.1).   When  multiple  package-name
              entries are listed, the requested status entries  are  separated
              by  an  empty  line,  with  the  same  order as specified on the
              argument list.

       -L, --listfiles package-name...
              List files installed to  your  system  from  package-name.  When
              multiple  package-name  are listed, the requested lists of files
              are separated by an empty line, with the same order as specified
              on  the  argument  list.   However,  note  that files created by
              package-specific installation-scripts are not listed.

       --control-list package-name
              List control files installed to your  system  from  package-name
              (since  dpkg  1.16.5).   These can be used as input arguments to

       --control-show package-name control-file
              Print the control-file installed to your  system  from  package-
              name to the standard output (since dpkg 1.16.5).

       -c, --control-path package-name [control-file]
              List  paths  for  control  files  installed  to your system from
              package-name (since dpkg 1.15.4).  If control-file is  specified
              then only list the path for that control file if it is present.

              Warning: this command is deprecated as it gives direct access to
              the internal dpkg database, please switch to use  --control-list
              and  --control-show  instead  for all cases where those commands
              might give the same end result. Although, as long  as  there  is
              still  at least one case where this command is needed (i.e. when
              having to remove a damaging postrm maintainer script), and while
              there  is  no  good solution for that, this command will not get

       -S, --search filename-search-pattern...
              Search for packages that own files corresponding  to  the  given
              pattern.   Standard shell wildcard characters can be used in the
              pattern, where asterisk (*) and question mark (?) will  match  a
              slash, and blackslash (\) will be used as an escape character.

              If the first character in the filename-search-pattern is none of
              '*[?/' then it will be considered a substring match and will  be
              implicitly  surrounded by '*' (as in *filename-search-pattern*).
              If the subsequent string contains any of '*[?\',  then  it  will
              handled  like a glob pattern, otherwise any trailing '/' or '/.'
              will be removed and a literal path lookup will be performed.

              This command will not list extra  files  created  by  maintainer
              scripts, nor will it list alternatives.

       -p, --print-avail [package-name...]
              Display     details     about     packages,    as    found    in
              /var/lib/dpkg/available.  If no package-name  is  specified,  it
              will  display  all  package  entries  in  the available database
              (since dpkg 1.19.1).  When multiple package-name are listed, the
              requested available entries are separated by an empty line, with
              the same order as specified on the argument list.

              Users of APT-based frontends should use apt-cache show  package-
              name  instead as the available file is only kept up-to-date when
              using dselect.

       -?, --help
              Show the usage message and exit.

              Show the version and exit.

              Change the location of the dpkg database. The  default  location
              is /var/lib/dpkg.

              Also  load  the  available file when using the --show and --list
              commands, which now default to only  querying  the  status  file
              (since dpkg 1.16.2).

              Disables  the  use  of any pager when showing information (since
              dpkg 1.19.2).

       -f, --showformat=format
              This option is used to specify the format of the  output  --show
              will  produce (short option since dpkg 1.13.1).  The format is a
              string that will be output for each package listed.

              In the format string, "\" introduces escapes:

                  \n  newline
                  \r  carriage return
                  \t  tab

              "\" before any other character suppresses any special meaning of
              the following character, which is useful for "\" and "$".

              Package  information  can  be  included  by  inserting  variable
              references    to    package    fields    using    the     syntax
              "${field[;width]}".  Fields are printed right-aligned unless the
              width is negative in which case left alignment will be used. The
              following  fields  are  recognized  but they are not necessarily
              available in the status file (only  internal  fields  or  fields
              stored in the binary package end up in it):

                  Conffiles (internal)
                  Config-Version (internal)
                  Filename (internal, front-end related)
                  MD5sum (internal, front-end related)
                  MSDOS-Filename (internal, front-end related)
                  Revision (obsolete)
                  Size (internal, front-end related)
                  Status (internal)
                  Tag (usually not in .deb but in repository Packages files)
                  Triggers-Awaited (internal)
                  Triggers-Pending (internal)

              The  following  are virtual fields, generated by dpkg-query from
              values from other fields (note that these do not use valid names
              for fields in control files):

                     It  contains  the  binary  package  name  with a possible
                     architecture qualifier  like  "libc6:amd64"  (since  dpkg
                     1.16.2).   An  architecture  qualifier will be present to
                     make the package name unambiguous,  for  example  if  the
                     package  has  a  Multi-Arch field with a value of same or
                     the package is of a foreign architecture.

                     It contains the package  short  description  (since  dpkg

                     This is an alias for binary:Synopsis (since dpkg 1.16.2).

                     It  contains  the  abbreviated  package  status (as three
                     characters), such as "ii " or "iHR" (since dpkg  1.16.2).
                     See the --list command description for more details.

                     It contains the package wanted status, part of the Status
                     field (since dpkg 1.17.11).

                     It contains the package status word, part of  the  Status
                     field (since dpkg 1.17.11).

                     It  contains  the  package status error flag, part of the
                     Status field (since dpkg 1.17.11).

                     It contains the list of the  package  filesystem  entries
                     separated by newlines (since dpkg 1.19.3).

                     It contains the timestamp in seconds of the last time the
                     package filesystem  entries  were  modified  (since  dpkg

                     It  contains  the  source  package  name  for this binary
                     package (since dpkg 1.16.2).

                     It contains the source package version  for  this  binary
                     package (since dpkg 1.16.2)

                     It  contains the source package upstream version for this
                     binary package (since dpkg 1.18.16)

              The default format string is  "${binary:Package}\t${Version}\n".
              Actually,  all  other fields found in the status file (i.e. user
              defined fields) can be requested, too. They will be printed  as-
              is, though, no conversion nor error checking is done on them. To
              get the name of the dpkg maintainer and the  installed  version,
              you could run:

                dpkg-query -W -f='${binary:Package} ${Version}\t${Maintainer}\n' dpkg

       0      The requested query was successfully performed.

       1      The  requested query failed either fully or partially, due to no
              file  or  package  being  found  (except   for   --control-path,
              --control-list and --control-show were such errors are fatal).

       2      Fatal  or unrecoverable error due to invalid command-line usage,
              or interactions  with  the  system,  such  as  accesses  to  the
              database, memory allocations, etc.

   External environment
       SHELL  Sets  the program to execute when spawning a command via a shell
              (since dpkg 1.19.2).

              Sets the pager command to use (since dpkg 1.19.1), which will be
              executed  with  <<$SHELL -c>>.  If SHELL is not set, <<sh>> will
              be used instead.  The DPKG_PAGER overrides the PAGER environment
              variable (since dpkg 1.19.2).

              If set and the --admindir option has not been specified, it will
              be used as the dpkg data directory.

              Sets the color mode (since dpkg 1.18.5).  The currently accepted
              values are: auto (default), always and never.

   Internal environment
       LESS   Defined  by  dpkg-query  to  "-FRSXMQ", if not already set, when
              spawning a pager (since dpkg 1.19.2).   To  change  the  default
              behavior,  this  variable  can  be  preset  to  some other value
              including an empty string, or the PAGER or DPKG_PAGER  variables
              can  be set to disable specific options with <<-+>>, for example
              DPKG_PAGER="less -+F".


1.19.6                            2019-03-25                     dpkg-query(1)

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