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 uux(1)								      uux(1)

      uux - UNIX system to UNIX system command execution

      uux [options] command-string

      uux gathers zero or more files from various systems, executes a
      command on a specified system, then sends standard output to a file on
      a specified system.  Note that, for security reasons, many
      installations limit the list of commands executable on behalf of an
      incoming request from uux.  Many sites will permit little more than
      the receipt of mail (see mail(1), mailx(1), and elm(1)) via uux.

      The command-string is made up of one or more arguments that look like
      a shell command line, except that the command and file names may be
      prefixed by system-name!.	 A null system-name is interpreted as the
      local system.

      File names can be one of the following:

	   +  A full path name;

	   +  A path name preceded by ~xxx where xxx is a login name on the
	      specified system and is replaced by that user's login
	      directory.  Note that if an invalid login is specified, the
	      default will be to the public directory

	   +  A path name preceded by ~/destination where destination is
	      appended to /var/spool/uucppublic.

	   +  A simple file name (which is prefixed by the current
	      directory).  See uucp(1) for details.

      For example, the command

	   uux "!diff usg!/usr/dan/file1 pwba!/a4/dan/file2 >&gt&gt>

      gets files file1 and file2 from machines usg and pwba, and executes a
      diff(1) command, placing the results in file.diff in the local
      directory /var/spool/uucppublic.

      Any special shell characters such as <&lt&lt&lt;, >&gt&gt&gt;, ;, or | should be quoted,
      either by quoting the entire command-string, or quoting the special
      characters as individual arguments.

      uux attempts to get all files to the execution system.  For files that
      are output files, the file name must be escaped using parentheses.
      For example, the command

 Hewlett-Packard Company	    - 1 -   HP-UX Release 11i: November 2000

 uux(1)								      uux(1)

	   uux a!cut -f1 b!/usr/file \(c!/usr/file\)

      gets /usr/file from system b and sends it to system a, performs a cut
      command on the file, and sends the result of the cut command to system

      uux notifies you if the requested command on the remote system was
      disallowed.  The list of commands allowed is specified in the
      Permissions file in /etc/uucp.  The response comes by remote mail from
      the remote machine.

      uux recognizes the following options:

	   -		  The standard input to uux is made the standard
			  input to the command-string.

	   -aname	  Use name as the user identification replacing the
			  initiator user-ID (notification is returned to the

	   -b		  Return whatever standard input was provided to the
			  uux command if the exit status is non-zero.

	   -c		  Do not copy the local file to the spool directory
			  for transfer to the remote machine (default).

	   -C		  Force the copy of local files to the spool
			  directory for transfer.

	   -ggrade	  grade is a single letter/number; lower ASCII
			  sequence characters cause the job to be
			  transmitted earlier during a particular

	   -j		  Output the jobid (the job identification ASCII
			  string) on the standard output.  This job
			  identification can be used by uustat to obtain the
			  status or terminate a job (see uustat(1)).

	   -n		  Do not notify the user if the command fails.

	   -r		  Do not start the file transfer, just queue the

	   -sfile	  Report status of the transfer in file.

	   -xdebug_level  Produce debugging output on standard output.	The
			  debug_level is a number between 0 and 9.  The
			  higher the number, the more detailed the
			  information returned.

 Hewlett-Packard Company	    - 2 -   HP-UX Release 11i: November 2000

 uux(1)								      uux(1)

	   -z		  Send success notification to user.

      Only the first command of a shell pipeline can have a system-name!.
      All other commands are executed on the system of the first command.

      The use of the shell metacharacter * will probably not do what you
      want it to do.  The shell tokens <&lt&lt&lt;<&lt&lt&lt; and >&gt&gt&gt;>&gt&gt&gt; are not implemented.

      The execution of commands on remote systems takes place in an
      execution directory known to the UUCP subsystem.	All files required
      for the execution are put into this directory unless they already
      reside on that machine.  Therefore, the simple file name (without path
      or machine reference) must be unique within the uux request.  The
      following command does not work:

	   uux "a!diff b!/usr/dan/xyz c!/usr/dan/xyz >&gt&gt&gt; !xyz.diff"

      but the command:

	   uux "a!diff a!/usr/dan/xyz c!/usr/dan/xyz >&gt&gt&gt; !xyz.diff"

      works (if diff is a permitted command).

      Protected files and files that are in protected directories that are
      owned by the requester can be sent in commands using uux.	 However, if
      the requester is root, and the directory is not searchable by other,
      the request fails.

      /etc/uucp				 configuration files
      /var/uucp				 log and error files
      /var/spool/uucp			 spool directories
      /var/spool/locks			 lock files
      /var/spool/uucppublic		 public directory

      mail(1), uuclean(1M), uucp(1).

      Tim O'Reilly and Grace Todino,
	   Managing UUCP and Usenet, O'Reilly & Associates, Inc. USA.

      Grace Todino and Dale Dougherty,
	   Using UUCP and Usenet, O'Reilly & Associates, Inc. USA.

      uux: SVID2, SVID3, XPG2, XPG3, XPG4

 Hewlett-Packard Company	    - 3 -   HP-UX Release 11i: November 2000