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NetBSD 6.1.5 - man page for rdist (netbsd section 1)

RDIST(1)			   BSD General Commands Manual				 RDIST(1)

NAME
     rdist -- remote file distribution program

SYNOPSIS
     rdist [-bDhinqRvwy] [-d var=value] [-f distfile] [-m host] [name ...]
     rdist [-bDhinqRvwy] -c name ... [login@]host[:dest]

DESCRIPTION
     rdist is a program to maintain identical copies of files over multiple hosts.  It preserves
     the owner, group, mode, and mtime of files if possible and can update programs that are exe-
     cuting.  rdist reads commands from distfile to direct the updating of files and/or directo-
     ries.

     Options specific to the first SYNOPSIS form:

     -	     If distfile is '-', the standard input is used.

     -f distfile
	     Use the specified distfile.

     If either the -f or '-' option is not specified, the program looks first for ``distfile'',
     then ``Distfile'' to use as the input.  If no names are specified on the command line, rdist
     will update all of the files and directories listed in distfile.  Otherwise, the argument is
     taken to be the name of a file to be updated or the label of a command to execute.  If label
     and file names conflict, it is assumed to be a label.  These may be used together to update
     specific files using specific commands.

     Options specific to the second SYNOPSIS form:

     -c 	 Forces rdist to interpret the remaining arguments as a small distfile.

		 The equivalent distfile is as follows.

		       (name ...) -> [login@] host
			     install [dest];

     Options common to both forms:

     -b 	 Binary comparison.  Perform a binary comparison and update files if they differ
		 rather than comparing dates and sizes.

     -d var=value
		 Define var to have value.  The -d option is used to define or override variable
		 definitions in the distfile.  Value can be the empty string, one name, or a list
		 of names surrounded by parentheses and separated by tabs and/or spaces.

     -D 	 Turn on debugging.

     -h 	 Follow symbolic links.  Copy the file that the link points to rather than the
		 link itself.

     -i 	 Ignore unresolved links.  rdist will normally try to maintain the link structure
		 of files being transferred and warn the user if all the links cannot be found.

     -m host	 Limit which machines are to be updated.  Multiple -m arguments can be given to
		 limit updates to a subset of the hosts listed in the distfile.

     -n 	 Print the commands without executing them.  This option is useful for debugging
		 distfile.

     -q 	 Quiet mode.  Files that are being modified are normally printed on standard out-
		 put.  The -q option suppresses this.

     -R 	 Remove extraneous files.  If a directory is being updated, any files that exist
		 on the remote host that do not exist in the master directory are removed.  This
		 is useful for maintaining truly identical copies of directories.

     -v 	 Verify that the files are up to date on all the hosts.  Any files that are out
		 of date will be displayed but no files will be changed nor any mail sent.

     -w 	 Whole mode.  The whole file name is appended to the destination directory name.
		 Normally, only the last component of a name is used when renaming files.  This
		 will preserve the directory structure of the files being copied instead of flat-
		 tening the directory structure.  For example, renaming a list of files such as (
		 dir1/f1 dir2/f2 ) to dir3 would create files dir3/dir1/f1 and dir3/dir2/f2
		 instead of dir3/f1 and dir3/f2.

     -y 	 Younger mode.	Files are normally updated if their mtime and size (see stat(2))
		 disagree.  The -y option causes rdist not to update files that are younger than
		 the master copy.  This can be used to prevent newer copies on other hosts from
		 being replaced.  A warning message is printed for files which are newer than the
		 master copy.

     Distfile contains a sequence of entries that specify the files to be copied, the destination
     hosts, and what operations to perform to do the updating.	Each entry has one of the follow-
     ing formats.

	   <variable name> `=' <name list>
	   [label:]<source list> `->' <destination list> <command list>
	   [label:]<source list> `::' <time_stamp file> <command list>

     The first format is used for defining variables.  The second format is used for distributing
     files to other hosts.  The third format is used for making lists of files that have been
     changed since some given date.  The source list specifies a list of files and/or directories
     on the local host which are to be used as the master copy for distribution.  The destination
     list is the list of hosts to which these files are to be copied.  Each file in the source
     list is added to a list of changes if the file is out of date on the host which is being
     updated (second format) or the file is newer than the time stamp file (third format).

     Labels are optional.  They are used to identify a command for partial updates.

     Newlines, tabs, and blanks are only used as separators and are otherwise ignored.	Comments
     begin with `#' and end with a newline.

     Variables to be expanded begin with `$' followed by one character or a name enclosed in
     curly braces (see the examples at the end).

     The source and destination lists have the following format:

	   <name>
     or
	   `(' <zero or more names separated by white-space> `)'

     The shell meta-characters `[', `]', `{', `}', `*', and `?'  are recognized and expanded (on
     the local host only) in the same way as csh(1).  They can be escaped with a backslash.  The
     `~' character is also expanded in the same way as csh(1) but is expanded separately on the
     local and destination hosts.  When the -w option is used with a file name that begins with
     `~', everything except the home directory is appended to the destination name.  File names
     which do not begin with `/' or `~' use the destination user's home directory as the root
     directory for the rest of the file name.

     The command list consists of zero or more commands of the following format.

	   `install'	  <options>	   opt_dest_name `;'
	   `notify'	  <name list>	   `;'
	   `except'	  <name list>	   `;'
	   `except_pat'   <pattern list>   `;'
	   `special'	  <name list>	   string `;'

     The install command is used to copy out of date files and/or directories.	Each source file
     is copied to each host in the destination list.  Directories are recursively copied in the
     same way.	Opt_dest_name is an optional parameter to rename files.  If no install command
     appears in the command list or the destination name is not specified, the source file name
     is used.  Directories in the path name will be created if they do not exist on the remote
     host.  To help prevent disasters, a non-empty directory on a target host will never be
     replaced with a regular file or a symbolic link.  However, under the `-R' option a non-empty
     directory will be removed if the corresponding filename is completely absent on the master
     host.  The options are `-R', `-h', `-i', `-v', `-w', `-y', and `-b' and have the same seman-
     tics as options on the command line except they only apply to the files in the source list.
     The login name used on the destination host is the same as the local host unless the desti-
     nation name is of the format ``login@host".

     The notify command is used to mail the list of files updated (and any errors that may have
     occurred) to the listed names.  If no `@' appears in the name, the destination host is
     appended to the name (e.g., name1@host, name2@host, ...).

     The except command is used to update all of the files in the source list except for the
     files listed in name list.  This is usually used to copy everything in a directory except
     certain files.

     The except_pat command is like the except command except that pattern list is a list of reg-
     ular expressions (see ed(1) for details).	If one of the patterns matches some string within
     a file name, that file will be ignored.  Note that since `\' is a quote character, it must
     be doubled to become part of the regular expression.  Variables are expanded in pattern list
     but not shell file pattern matching characters.  To include a `$', it must be escaped with
     `\'.

     The special command is used to specify sh(1) commands that are to be executed on the remote
     host after the file in name list is updated or installed.	If the name list is omitted then
     the shell commands will be executed for every file updated or installed.  The shell variable
     `FILE' is set to the current filename before executing the commands in string.  String
     starts and ends with `"' and can cross multiple lines in distfile.  Multiple commands to the
     shell should be separated by `;'.	Commands are executed in the user's home directory on the
     host being updated.  The special command can be used to rebuild private databases, etc.
     after a program has been updated.

     The following is a small example:

	   HOSTS = ( matisse root@arpa )

	   FILES = ( /bin /lib /usr/bin /usr/games
	   /usr/include/{*.h,{stand,sys,vax*,pascal,machine}/*.h}
	   /usr/lib /usr/man/man? /usr/ucb /usr/local/rdist )

	   EXLIB = ( Mail.rc aliases aliases.dir aliases.pag crontab dshrc
	   sendmail.cf sendmail.fc sendmail.hf sendmail.st uucp vfont )

	   ${FILES} -> ${HOSTS}
	   install -R ;
	   except /usr/lib/${EXLIB} ;
	   except /usr/games/lib ;
	   special /usr/lib/sendmail "/usr/lib/sendmail -bz" ;

	   srcs:
	   /usr/src/bin -> arpa
	   except_pat ( \\.o\$ /SCCS\$ ) ;

	   IMAGEN = (ips dviimp catdvi)

	   imagen:
	   /usr/local/${IMAGEN} -> arpa
	   install /usr/local/lib ;
	   notify ralph ;

	   ${FILES} :: stamp.cory
	   notify root@cory ;

FILES
     distfile	  input command file
     /tmp/rdist*  temporary file for update lists

DIAGNOSTICS
     A complaint about mismatch of rdist version numbers may really stem from some problem with
     starting your shell, e.g., you are in too many groups.

SEE ALSO
     csh(1), sh(1), stat(2)

HISTORY
     The rdist command appeared in 4.3BSD.

BUGS
     Source files must reside on the local host where rdist is executed.

     There is no easy way to have a special command executed after all files in a directory have
     been updated.

     Variable expansion only works for name lists; there should be a general macro facility.

     rdist aborts on files which have a negative mtime (before Jan 1, 1970).

     There should be a `force' option to allow replacement of non-empty directories by regular
     files or symlinks.  A means of updating file modes and owners of otherwise identical files
     is also needed.

BSD					  March 17, 1994				      BSD


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