(emacs)File Shadowing


Shadowing Files
---------------

`M-x shadow-initialize'
     Set up file shadowing.

`M-x shadow-define-literal-group'
     Declare a single file to be shared between sites.

`M-x shadow-define-regexp-group'
     Make all files that match each of a group of files be shared
     between hosts.

`M-x shadow-define-cluster <RET> NAME <RET>'
     Define a shadow file cluster NAME.

`M-x shadow-copy-files'
     Copy all pending shadow files.

`M-x shadow-cancel'
     Cancel the instruction to shadow some files.

   You can arrange to keep identical "shadow" copies of certain files
in more than one place--possibly on different machines.  To do this,
first you must set up a "shadow file group", which is a set of
identically-named files shared between a list of sites.  The file group
is permanent and applies to further Emacs sessions as well as the
current one.  Once the group is set up, every time you exit Emacs, it
will copy the file you edited to the other files in its group.  You can
also do the copying without exiting Emacs, by typing `M-x
shadow-copy-files'.

   To set up a shadow file group, use `M-x shadow-define-literal-group'
or `M-x shadow-define-regexp-group'.  See their documentation strings
for further information.

   Before copying a file to its shadows, Emacs asks for confirmation.
You can answer "no" to bypass copying of this file, this time.  If you
want to cancel the shadowing permanently for a certain file, use `M-x
shadow-cancel' to eliminate or change the shadow file group.

   A "shadow cluster" is a group of hosts that share directories, so
that copying to or from one of them is sufficient to update the file on
all of them.  Each shadow cluster has a name, and specifies the network
address of a primary host (the one we copy files to), and a regular
expression that matches the host names of all the other hosts in the
cluster.  You can define a shadow cluster with `M-x
shadow-define-cluster'.

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