dpkg-divert man page on ElementaryOS

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dpkg-divert(8)			dpkg utilities			dpkg-divert(8)

NAME
       dpkg-divert - override a package's version of a file

SYNOPSIS
       dpkg-divert [option...]	command

DESCRIPTION
       dpkg-divert is the utility used to set up and update the list of diver‐
       sions.

       File diversions are a way of forcing dpkg(1) not to install a file into
       its  location,  but  to	a  diverted  location.	Diversions can be used
       through the Debian package scripts to move a file away when it causes a
       conflict.  System administrators can also use it to override some pack‐
       age's configuration file, or whenever some files (which	aren't	marked
       as  'conffiles')	 need to be preserved by dpkg, when installing a newer
       version of a package which contains those files.

COMMANDS
       [--add] file
	      Add a diversion for file.

       --remove file
	      Remove a diversion for file.

       --list glob-pattern
	      List diversions matching glob-pattern.

       --listpackage file
	      Print the name of the package that diverts file.	 Prints	 LOCAL
	      if file is locally diverted and nothing if file is not diverted.

       --truename file
	      Print the real name for a diverted file.

OPTIONS
       --admindir directory
	      Set   the	  dpkg	 data	directory   to	 directory   (default:
	      /var/lib/dpkg).

       --divert divert-to
	      divert-to is the location where the versions of  file,  as  pro‐
	      vided by other packages, will be diverted.

       --local
	      Specifies that all packages' versions of this file are diverted.
	      This means, that there are no exceptions, and  whatever  package
	      is installed, the file is diverted. This can be used by an admin
	      to install a locally modified version.

       --package package
	      package is the name of a package whose copy of file will not  be
	      diverted.	 i.e.  file  will  be diverted for all packages except
	      package.

       --quiet
	      Quiet mode, i.e. no verbose output.

       --rename
	      Actually move the file aside (or back). dpkg-divert  will	 abort
	      operation in case the destination file already exists.

       --test Test  mode, i.e. don't actually perform any changes, just demon‐
	      strate.

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

       --version
	      Show the version and exit.

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

       DPKG_MAINTSCRIPT_PACKAGE
	      If set and the --local and --package options have not been spec‐
	      ified, dpkg-divert will use it as the package name.

FILES
       /var/lib/dpkg/diversions
	      File which contains the current list of diversions of  the  sys‐
	      tem.  It	is located in the dpkg administration directory, along
	      with other files important to dpkg, such as status or available.
	      Note: dpkg-divert preserves the old  copy	 of  this  file,  with
	      extension -old, before replacing it with the new one.

NOTES
       When  adding,  default  is  --local and --divert original.distrib. When
       removing, --package or --local and --divert must match if specified.

       Directories can't be diverted with dpkg-divert.

       Care should be taken when diverting shared libraries, ldconfig(8)  cre‐
       ates  a	symbolic  link	based  on  the DT_SONAME field embedded in the
       library.	 Because ldconfig doesn't honour diverts (only dpkg does), the
       symlink	may  end  up  pointing	at the diverted library, if a diverted
       library has the same SONAME as the undiverted one.

EXAMPLES
       To divert all copies of	a  /usr/bin/example  to	 /usr/bin/example.foo,
       i.e.  directs  all packages providing /usr/bin/example to install it as
       /usr/bin/example.foo, performing the rename if required:

       dpkg-divert --divert /usr/bin/example.foo --rename /usr/bin/example

       To remove that diversion:

       dpkg-divert --rename --remove /usr/bin/example

       To  divert  any	package	 trying	  to   install	 /usr/bin/example   to
       /usr/bin/example.foo, except your own wibble package:

       dpkg-divert  --package  wibble  --divert	 /usr/bin/example.foo --rename
	      /usr/bin/example

       To remove that diversion:

       dpkg-divert --package wibble --rename --remove /usr/bin/example

SEE ALSO
       dpkg(1).

Debian Project			  2011-08-14			dpkg-divert(8)
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