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rdist(1)			 User Commands			      rdist(1)

NAME
       rdist - remote file distribution	program

SYNOPSIS
       rdist  [-b]  [-D]  [-h]	[-i] [-n] [-q] [-R] [-a] [-x] [-PN | -PO]  [-k
       realm] [-v] [-w]	[-y] [ -d macro	= value] [-f distfile]	[-m host]...

       rdist [-b] [-D] [-h] [-i] [-n] [-q] [-R]	[-a] [-x]  [-PN	 |  -PO]   [-k
       realm] [-v] [-w]	[-y] -c	pathname... [ login @] hostname	[ : destpath]

DESCRIPTION
       The  rdist utility maintains copies of files on multiple	hosts. It pre-
       serves the owner, group,	mode, and  modification	 time  of  the	master
       copies,	and  can update	programs that are executing. (Note: rdist does
       not propagate ownership or mode changes when the	file contents have not
       changed.)  Normally,  a copy on a remote	host is	updated	if its size or
       modification time differs from the original on the local	host. With the
       -y  option (younger mode), only the modification	times are checked, not
       the size. See OPTIONS below.

       There are two forms of the rdist	command. In the	first  form  shown  in
       the  SYNOPSIS  section  above,  rdist  reads the	indicated distfile for
       instructions on updating	files and/or directories. If distfile is  `-',
       the  standard  input  is	 used. If no -f	option is present, rdist first
       looks in	its working directory for distfile, and	then for Distfile, for
       instructions.

       The  second  form  shown	 in  SYNOPSIS uses the -c option and specifies
       paths as	command	line options.

       The user	can opt	for a secure session of	rdist which uses  Kerberos  V5
       for  authentication.  Encryption	 of the	data being transferred is also
       possible. The rdist session can be kerberized using any of the  follow-
       ing  Kerberos specific options :	-a, -PN	or -PO,	-x, and	-k realm. Some
       of these	options	(-x, -PN or -PO, and -f	or -F) can also	 be  specified
       in  the	[appdefaults]  section	of  krb5.conf(4).  The	usage of these
       options and the expected	behavior is discussed in the  OPTIONS  section
       below. If Kerberos authentication is used, authorization	to the account
       is controlled by	rules in  krb5_auth_rules(5).  If  this	 authorization
       fails, fallback to normal rdist using rhosts will occur only if the -PO
       option is used explicitly on  the  command  line	 or  is	 specified  in
       krb5.conf(4). Also notice that the -PN or -PO, -x, and -k realm options
       are just	supersets of the -a option. In order  to  use  the  non-secure
       version	of  rdist  across  machines,  each  host  machine  must	have a
       /etc/host.equiv file, or	the user must have an  entry  in  the  .rhosts
       file in the home	directory. See hosts.equiv(4) for more information.

OPTIONS
       The following options are supported:

       -a

	   This	 option	 explicitly enables Kerberos authentication and	trusts
	   the .k5login	file for access-control. If the	authorization check by
	   in.rshd(1M)	on  the	 server-side succeeds and if the .k5login file
	   permits access, the user is allowed to carry	out the	 rdist	trans-
	   fer.

       -b

	   Binary  comparison.	Performs a binary comparison and updates files
	   if they differ, rather than merely comparing	dates and sizes.

       -c pathname ... [login@]hostname[:destpath]

	   Copies each pathname	to the named host; if destpath	is  specified,
	   it  will not	update any pathname on the named host. (Relative file-
	   names are taken  as	relative  to  your  home  directory.)  If  the
	   `login@'  prefix is given, the update is performed with the user ID
	   of login.  If  the  `:destpath'  is	 given,	 the  remote  file  is
	   installed as	that pathname.

       -d macro=value

	   Defines macro to have value.	This option is used to define or over-
	   ride	macro definitions in the distfile.  value  can	be  the	 empty
	   string,  one	name, or a list	of names surrounded by parentheses and
	   separated by	white space.

       -D

	   Enables debugging.

       -f distfile

	   Uses	the description	file distfile. A `-' as	the distfile  argument
	   denotes the standard	input.

       -h

	   Follows  symbolic  links.  Copies  the file that the	link points to
	   rather than the link	itself.

       -i

	   Ignores 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.

       -k realm

	   Causes rdist	to obtain tickets for the remote host in realm instead
	   of the remote host's	realm as determined by krb5.conf(4).

       -m host

	   Limits  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

	   Prints  the	commands without executing them. This option is	useful
	   for debugging a distfile.

       -PO
       -PN

	   Explicitly requests new (-PN) or old	(-PO) version of the  Kerberos
	   "rcmd"  protocol.  The  new	protocol avoids	many security problems
	   prevalant in	the old	one and	is regarded much more secure,  but  is
	   not	interoperable  with older (MIT/SEAM) servers. The new protocol
	   is used by default, unless explicitly specified using these options
	   or through krb5.conf(4). If Kerberos	authorization fails when using
	   the old "rcmd" protocol, there is fallback to regular,  non-kerber-
	   ized	 rdist.	 This is not the case when the new, more secure	"rcmd"
	   protocol is used.

       -q

	   Quiet mode. Does not	display	the files being	updated	on  the	 stan-
	   dard	output.

       -R

	   Removes  extraneous files. If a directory is	being updated, removes
	   files on the	remote host that do not	correspond  to	those  in  the
	   master  (local)  directory.	This  is  useful for maintaining truly
	   identical copies of directories.

       -v

	   Verifies that the files are up to date on all the hosts. Any	 files
	   that	 are  out of date are displayed, but no	files are updated, nor
	   is 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 preserves the directory structure of  the
	   files  being	copied,	instead	of flattening the directory structure.
	   For instance, renaming a list of files such as  dir1/dir2  to  dir3
	   would  create  files	 dir3/dir1  and	 dir3/dir2 instead of dir3 and
	   dir3. When the -w option is used with a filename that  begins  with
	   ~, everything except	the home directory is appended to the destina-
	   tion	name.

       -x

	   Causes the information transferred between hosts to	be  encrypted.
	   Notice  that	 the command is	sent unencrypted to the	remote system.
	   All subsequent transfers are	encrypted.

       -y

	   Younger mode. Does not update remote	copies that are	 younger  than
	   the master copy, but	issues a warning message instead. Only modifi-
	   cation times	are checked. No	comparison of size is made.

USAGE
   White Space Characters
       <NEWLINE>, <TAB>, and <SPACE>  characters  are  all  treated  as	 white
       space;  a  mapping  continues across input lines	until the start	of the
       next mapping: either a single filename followed by a `->' or the	 open-
       ing parenthesis of a filename list.

   Comments
       Comments	begin with # and end with a NEWLINE.

   Distfiles
       The  distfile  contains a sequence of entries that specify the files to
       be copied, the destination files	to be copied, the  destination	hosts,
       and  what  operations to	perform	to do the updating. Each entry has one
       of the following	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 that 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 that is being updated (second for-
       mat) or if the  file is newer than the time stamp file (third  format).
       Labels  are  optional.  They are	used to	identify a command for partial
       updates.	The colon (:) is used after an optional	label, while the  dou-
       ble colon (::) is used for making lists of files	that have been changed
       since a certain date (specified by  the	date/time  of  the  time_stamp
       file).  Typically, only notify is used with the '::' format of the com-
       mand line.

   Macros
       rdist has a limited macro facility. Macros are only expanded  in	 file-
       name  or	 hostname  lists,  and in the argument lists of	certain	primi-
       tives.  Macros cannot be	used to	stand for primitives or	their options,
       or the `->' or `::' symbols.

       A macro definition is a line of the form:

       macro = value

       A macro reference is a string of	the form:

       ${macro}

       although	(as with make(1S)) the braces can be omitted if	the macro name
       consists	of just	one character.

   Kerberos Access-Control file
       For the kerberized rdist	session, each user may have a  private	autho-
       rization	 list in a file	.k5login in their home directory. Each line in
       this file should	contain	a Kerberos principal name of the form  princi-
       pal/instance@realm.  If	there  is  a  ~/.k5login  file,	then access is
       granted to the account if and only if the originater user is  authenti-
       cated to	one of the principals named in the ~/.k5login file. Otherwise,
       the originating user will be granted access to the account if and  only
       if  the	authenticated  principal name of the user can be mapped	to the
       local account name using	 the  authenticated-principal-name  ->	local-
       user-name  mapping  rules. The .k5login file (for access	control) comes
       into play only when Kerberos authentication is being done.

   Metacharacters
       The shell meta-characters: [, ],	{, },  *  and  ?  are  recognized  and
       expanded	 (on  the  local  host	only)  just  as	 they are with csh(1).
       Metacharacters can be escaped by	prepending a backslash.

       The ~ character is also expanded	in the same way	as with	csh;  however,
       it is expanded separately on the	local and destination hosts.

   Filenames
       File  names  that do not	begin with `/' or `~' are taken	to be relative
       to user's home directory	on each	destination host; they are  not	 rela-
       tive  to	 the  current  working	directory. Multiple file names must be
       enclosed	within parentheses.

   Primitives
       The following primitives	can be used to specify	actions	 rdist	is  to
       take when updating remote copies	of each	file.

       install [-b] [-h] [-i] [-R] [-v]	[-w] [-y] [newname]

	   Copy	out of date files and directories (recursively). If no newname
	   operand is given, the name of the local file	is given to the	remote
	   host's  copy. If absent from	the remote host, parent	directories in
	   a filename's	path are created. To help prevent  disasters,  a  non-
	   empty  directory  on	 a  target host	is not replaced	with a regular
	   file	or a symbolic link  by	rdist.	However,  when	using  the  -R
	   option, a non-empty directory is removed if the corresponding file-
	   name	is completely absent on	the master host.

	   The options for install have	the same semantics  as	their  command
	   line	 counterparts,	but  are limited in scope to a particular map.
	   The login name used on the destination host	is  the	 same  as  the
	   local host unless the destination name is of	the format login@host.
	   In that case, the update is performed under the username login.

       notify address ...

	   Send	mail to	the indicated email address of the form:

	   user@host

	   that	lists the files	updated	and any	errors that may	have occurred.
	   If  an  address  does  not contain a	`@host'	suffix,	rdist uses the
	   name	of the destination host	to complete the	address.

       except filename ...

	   Omit	from updates the files named as	arguments.

       except_pat pattern ...

	   Omit	from updates the filenames that	match each  regular-expression
	   pattern  (see  ed(1)	 for more information on regular expressions).
	   Note	that `\' and `$' characters must be escaped in	the  distfile.
	   Shell  variables  can  also be used within a	pattern, however shell
	   filename expansion is not supported.

       special [filename] ... "command-line"

	   Specify a Bourne shell, sh(1) command line to execute on the	remote
	   host	 after	each named file	is updated. If no filename argument is
	   present, the	command-line is	performed for every updated file, with
	   the	shell  variable	FILE set to the	file's name on the local host.
	   The quotation marks allow command-line to span input	lines  in  the
	   distfile;  multiple	shell commands must be separated by semicolons
	   (;).

	   The default working directory for the shell executing each command-
	   line	is the user's home directory on	the remote host.

   IPv6
       The  rdist  command is IPv6-enabled. See	ip6(7P). IPv6 is not currently
       supported with Kerberos V5 authentication.

EXAMPLES
       Example 1: A sample distfile

       The following sample distfile instructs	rdist  to  maintain  identical
       copies  of  a  shared  library, a shared-library	initialized data file,
       several include files, and a  directory,	 on  hosts  named  hermes  and
       magus.  On  magus,  commands are	executed as super-user.	rdist notifies
       merlin@druid whenever it	discovers that a local file has	changed	 rela-
       tive to a timestamp file. (Parentheses are used when the	source or des-
       tination	list contains zero or more names separated by white-space.)

       HOSTS = ( hermes	root@magus )

       FILES = ( /usr/local/lib/libcant.so.1.1
		 /usrlocal/lib/libcant.sa.1.1 /usr/local/include/{*.h}
		 /usr/local/bin	)

       (${FILES}) -> (${HOSTS})
	     install -R	;
       ${FILES}	:: /usr/local/lib/timestamp
		 notify	merlin@druid ;

FILES
       ~/.rhosts	       User's trusted hosts and	users

       /etc/host.equiv	       system trusted hosts and	users

       /tmp/rdist*	       Temporary file for update lists

       $HOME/.k5login	       File containing Kerberos	 principals  that  are
			       allowed access

       /etc/krb5/krb5.conf     Kerberos	configuration file

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE	TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWrcmdc			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       csh(1),	ed(1), make(1S), sh(1),	 in.rshd(1M), stat(2), hosts.equiv(4),
       krb5.conf(4), attributes(5), krb5_auth_rules(5),	ip6(7P)

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

WARNINGS
       The super-user does not have its	accustomed access  privileges  on  NFS
       mounted	file  systems.	Using  rdist to	copy to	such a file system may
       fail, or	the copies may be owned	by user	"nobody".

BUGS
       Source files must reside	or be mounted on the local host.

       There is	no easy	way to have a special command executed only once 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 that have a negative  modification	 time  (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.

SunOS 5.10			  14 May 2003			      rdist(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | USAGE | EXAMPLES | FILES | ATTRIBUTES | SEE ALSO | DIAGNOSTICS | WARNINGS | BUGS

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