update-mime


SYNOPSIS
       update-mime [no parameters]

DESCRIPTION
       update-mime  updates  the /etc/mailcap file to reflect mime information
       changed by a Debian package during installation or removal.


   OPTIONS
       --local Generate files in the current user's home directory instead  of
       /etc.   This allows users to create a custom ordering configuration and
       get a complete ~/.mailcap file out of it.


OVERRIDING ORDER
       The order of entries in the /etc/mailcap file can be altered by editing
       the  /etc/mailcap.order file.  Please see the mailcap.order(5) man page
       for more information.


CREATING ENTRIES
       To create entries in the mailcap file, packages need to create  a  file
       in  the /usr/lib/mime/packages directory.  In this file goes the verba-
       tim desired mailcap entries.   In  addition  to  the  standard  mailcap
       options  (described  below)  is a new priority option.  Specifying this
       will provide for simple ranking of programs within a given  mime  type.
       An  animation viewer, for example, may be able to display a static pic-
       ture, but probably wouldn't be the best choice and  so  would  give  an
       option  like  "priority=2".  Priorities range from 0 to 9, with 0 being
       the lowest and 9 being the highest.  If the priority option is omitted,
       a value of 5 is used.

       The following are standard options that can be specified in the mailcap
       entry.  Options are separated by semicolons (;) but must all be on  the
       same line.  Each line should look like:

         mime/type; viewer; option; another=val; etc; priority=5

       Mime  types  of  the  form  "class/*" and even "*/*" are now acceptable
       (they were previously disallowed).  When using "class/*", it is  proba-
       bly  a  good  idea  to  add a "priority=[1-4]" option so specific rules
       using the default priority will get  chosen  first.   If  using  "*/*",
       though,  you  probably  want  to add a "priority=0" option to make that
       rule a "last resort".

   Commands
       <program-string>
              Specifies the program to run to view a file of  the  given  con-
              tent-type.   This option setting connot be omitted.  An implicit
              "view=" can be considered before it.  When writing an entry that
              has no viewer, use a value of false in this space.

       compose=<program-string>
              pose" option is simpler, and is preferred for use with  existing
              (non-mail-oriented)  programs for composing data in a given for-
              mat.  The "composetyped" option is necessary when  the  Content-
              type information must include auxiliary parameters, and the com-
              position program must then know enough  about  mail  formats  to
              produce output that includes the mail type information.

       edit=<program-string>
              The  "edit" command may be used to specify a program that can be
              used to edit a body or body part in the given format.   In  many
              cases, it may be identical in content to the "compose" command.

       print=<program-string>
              The "print" command may be used to specify a program that can be
              used to print a message or body part in the given format.

   Modifiers
       These options are modifiers to all the commands specified on  the  com-
       mand line.

       test=<conditional>
              The  "test"  option  may be used to test some external condition
              (e.g., the machine architecture, or the window system in use) to
              determine whether or not the mailcap line applies.  It specifies
              a program to be run to test some condition.  If the test  fails,
              a  subsequent  mailcap  entry  will  be  sought.   Multiple test
              options are not permitted -- since a test can call a program, it
              can already be arbitrarily complex.

              Note:  When  testing for X by looking at the DISPLAY environment
              variable, please use one of:

                      test=test -z "$DISPLAY"     (no X)
                or    test=test -n "$DISPLAY"     (have X)

              Many programs recognize these strings and optimize for them.

       needsterminal
              The "needsterminal" option, if given, indicates  that  the  com-
              mands must be run on an interactive terminal.  This is needed to
              inform window-oriented user agents that an interactive  terminal
              is needed.  (The decision is not left exclusively to the command
              because in some circumstances it may not be  possible  for  such
              programs  to  tell whether or not they are on interactive termi-
              nals.)  The needsterminal command applies to the  view,  compose
              and  edit commands, if they exist.  Note that this is NOT a test
              -- it is a requirement for the environment in which the  program
              will  be  executed,  and  will typically cause the creation of a
              terminal window when not executed on either a real terminal or a
              terminal window.

       copiousoutput
              The  "copiousoutput" option, if given, indicates that the output
              from the view-command will be an extended stream of  output  and
              readers  that  wish to describe the data before offering to dis-
              play it.

       textualnewlines
              The "textualnewlines" option, if given, indicates that this type
              of  data  is line-oriented and that, if encoded in a binary for-
              mat, all newlines should be converted to canonical  form  (CRLF)
              before  encoding,  and  will be in that form after decoding.  In
              general, this is needed only if there is line-oriented  data  of
              some  type other than text/* or non-line-oriented data that is a
              subtype of text.

       x11-bitmap=<pathname>
              The "x11-bitmap" option names a file, in X11 bitmap  (xbm)  for-
              mat,  which points to an appropriate icon to be used to visually
              denote the presence of this kind of data.

       nametemplate=<string>
              The "nametemplate" option gives a file name format, in which  %s
              will  be  replaced  by a short unique string to give the name of
              the temporary file to be passed to the viewing command.  This is
              only  expected  to  be  relevant  in environments where filename
              extensions are meaningful, e.g., one could specify  that  a  GIF
              file  being  passed to a gif viewer should have a name ending in
              ".gif" by using "nametemplate=%s.gif".

DEPENDENCIES
       Packages that wish to provide MIME  access  to  themselves  should  not
       depend  on,  recommend,  or suggest mime-support.  Instead, they should
       just put something like  the  following  in  the  postinst  and  postrm
       scripts.

           if [ -x /usr/sbin/update-mime ]; then
               update-mime
           fi

SEE ALSO
       mailcap.order(5), RFC-2046, RFC-1524

AUTHOR
       update-mime was written by Brian White <bcwhite@pobox.com>

COPYRIGHT
       update-mime is in the public domain (the only true "free").



Debian Project                   3rd Sep 2010                   UPDATE-MIME(8)
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