uux(1)							      General Commands Manual							    uux(1)

NAME

       uux - Remote command execution over UUCP

SYNOPSIS

       uux [ options ] command

DESCRIPTION

       The  uux  command is used to execute a command on a remote system, or to execute a command on the local system using files from remote sys-
       tems.  The command is not executed immediately; the request is queued until the uucico (8) daemon calls the system and  executes  it.   The
       daemon is started automatically unless one of the -r or --nouucico options is given.

       The actual command execution is done by the uuxqt (8) daemon.

       File  arguments	can  be gathered from remote systems to the execution system, as can standard input.  Standard output may be directed to a
       file on a remote system.

       The command name may be preceded by a system name followed by an exclamation point if it is to be executed on a remote  system.	 An  empty
       system name is taken as the local system.

       Each  argument  that  contains an exclamation point is treated as naming a file.  The system which the file is on is before the exclamation
       point, and the pathname on that system follows it.  An empty system name is taken as the local system; this must be used to transfer a file
       to  a  command being executed on a remote system.  If the path is not absolute, it will be appended to the current working directory on the
       local system; the result may not be meaningful on the remote system.  A pathname may begin with ~/, in which case it  is  relative  to  the
       UUCP  public  directory	(usually  /usr/spool/uucppublic  or  /var/spool/uucppublic)  on the appropriate system.  A pathname may begin with
       ~name/, in which case it is relative to the home directory of the named user on the appropriate system.

       Standard input and output may be redirected as usual; the pathnames used may contain exclamation points to indicate that they are on remote
       systems.   Note that the redirection characters must be quoted so that they are passed to uux rather than interpreted by the shell.  Append
       redirection (>>) does not work.

       All specified files are gathered together into a single directory before execution of the command begins.  This means that each	file  must
       have a distinct base name.  For example,
	    uux 'sys1!diff sys2!~user1/foo sys3!~user2/foo >!foo.diff'
       will fail because both files will be copied to sys1 and stored under the name foo.

       Arguments  may be quoted by parentheses to avoid interpretation of exclamation points.  This is useful when executing the uucp command on a
       remote system.

       A request to execute an empty command (e.g., uux sys!)  will create a poll file for the specified system.

       The exit status of uux is one of the codes found in the header file sysexits.h.	In particular, EX_OK ( 0 ) indicates success, and EX_TEMP-
       FAIL ( 75 ) indicates a temporary failure.

OPTIONS

       The following options may be given to uux.

       -, -p, --stdin
	    Read standard input and use it as the standard input for the command to be executed.

       -c, --nocopy
	    Do	not  copy  local files to the spool directory.	This is the default.  If they are removed before being processed by the uucico (8)
	    daemon, the copy will fail.  The files must be readable by the uucico (8) daemon, as well as the by the invoker of uux.

       -C, --copy
	    Copy local files to the spool directory.

       -l, --link
	    Link local files into the spool directory.	If a file can not be linked because it is on a different device, it will be copied  unless
	    one  of  the -c or --nocopy options also appears (in other words, use of --link switches the default from --nocopy to --copy).  If the
	    files are changed before being processed by the uucico (8) daemon, the changed versions will be used.  The files must be  readable	by
	    the uucico (8) daemon, as well as by the invoker of uux.

       -g grade, --grade grade
	    Set  the grade of the file transfer command.  Jobs of a higher grade are executed first.  Grades run 0 ... 9 A ... Z a ... z from high
	    to low.

       -n, --notification=no
	    Do not send mail about the status of the job, even if it fails.

       -z, --notification=error
	    Send mail about the status of the job if an error occurs.  For many uuxqt daemons, including  the  Taylor  UUCP  uuxqt,  this  is  the
	    default  action;  for those, --notification=error will have no effect.  However, some uuxqt daemons will send mail if the job succeeds
	    unless the --notification=error option is used, and some other uuxqt daemons will not send mail if the job fails unless the  --notifi-
	    cation=error option is used.

       -r, --nouucico
	    Do not start the uucico (8) daemon immediately; merely queue up the execution request for later processing.

       -j, --jobid
	    Print  jobids  on  standard  output.  A jobid will be generated for each file copy operation required to perform the operation.  These
	    file copies may be cancelled by passing the jobid to the --kill switch of uustat (1), which will make the execution impossible to com-
	    plete.

       -a address, --requestor address
	    Report job status to the specified e-mail address.

       -x type, --debug type
	    Turn  on  particular debugging types.  The following types are recognized: abnormal, chat, handshake, uucp-proto, proto, port, config,
	    spooldir, execute, incoming, outgoing.  Only abnormal, config, spooldir and execute are meaningful for uux.

	    Multiple types may be given, separated by commas, and the --debug option may appear multiple times.  A number may also be given, which
	    will turn on that many types from the foregoing list; for example, --debug 2 is equivalent to --debug abnormal,chat.

       -I file, --config file
	    Set configuration file to use.  This option may not be available, depending upon how uux was compiled.

       -v, --version
	    Report version information and exit.

       --help
	    Print a help message and exit.

EXAMPLES

       uux -z - sys1!rmail user1
       Execute the command ``rmail user1'' on the system sys1, giving it as standard input whatever is given to uux as standard input.	If a fail-
       ure occurs, send a message using mail (1).

       uux 'diff -c sys1!~user1/file1 sys2!~user2/file2 >!file.diff'
       Fetch the two named files from system sys1 and system sys2 and execute diff putting the result in file.diff in the current directory.   The
       current directory must be writable by the uuxqt (8) daemon for this to work.

       uux 'sys1!uucp ~user1/file1 (sys2!~user2/file2)'
       Execute uucp on the system sys1 copying file1 (on system sys1) to sys2.	This illustrates the use of parentheses for quoting.

RESTRICTIONS

       The remote system may not permit you to execute certain commands.  Many remote systems only permit the execution of rmail and rnews.

       Some of the options are dependent on the capabilities of the uuxqt (8) daemon on the remote system.

SEE ALSO

       mail(1), uustat(1), uucp(1), uucico(8), uuxqt(8)

BUGS

       Files can not be referenced across multiple systems.

       Too many jobids are output by --jobid, and there is no good way to cancel a local execution requiring remote files.

AUTHOR

       Ian Lance Taylor (ian@airs.com)

								 Taylor UUCP 1.07							    uux(1)