NAME
uux - unix to unix command execution

SYNOPSIS
uux [ - ] [ -cClLnprz ] [ -aname ] [ -ggrade ] [ -xdebug ]
command-string

DESCRIPTION
Uux will gather zero or more files from various systems, execute a
command on a specified system and then send standard output to a
file on a specified system.

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 may be one of

(1) a full path name;

(2) a path name preceded by ~user where user is a login name
on the specified system and is replaced by that user’s login
directory;

(3) a path name prefixed by ~; where ~ is expanded to the
system’s public directory (usually /usr/spool/uucppublic);

(4) a partial pathname, which is prefixed by the current
directory.

As an example, the command

uux "!diff usg!/usr/dan/file1 pwba!/a4/dan/file2 >
!~/dan/file.diff"

will get the file1 and file2 files from the "usg" and "pwba"
machines, execute a diff(1) command and put the results in
file.diff in the local /usr/spool/uucppublic/dan/ directory.

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

Uux will attempt 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

uux a!wc b!/usr/file1 /usr/file2

get /usr/file1 from system "b" and send it to system "a",
perform a wc command on that file and send the result of the wc
command to system "c".

Uux will notify you by mail if the requested command on the remote
system was disallowed. This notification can be turned off by the
-n option.

The following options are interpreted by uux:

- 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.

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

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

-ggrade
Grade is a single letter/number, from 0 to 9, A to Z, or a to
z; 0 is the highest, and z is the lowest grade. The default
is A; by comparison uucp(1) defaults to n and mail is usually
sent at grade C. Lower grades should be specified for high-
volume jobs, such as news.

-l Try and make a link from the original file to the spool
directory. If the link cannot be made, copy the file.

-n Do not notify the user when the command completes.

-p Same as -: The standard input to uux is made the standard
input to the command-string.

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

-xdebug
Produce debugging output on stdout. The debug is a number
between 0 and 9; higher numbers give more detailed
information. Debugging is permitted only for privileged users
(specifically, those with read access to L.sys(5).

-z Notify the user only if the command fails.

-L Start up uucico with the -L flag. This will force calls to be
made to local sites only (see uucico(8)).

FILES
/usr/spool/uucp spool directories
/usr/lib/uucp/* UUCP configuration data and daemons

SEE ALSO
uucp(1), uucico(8), uuxqt(8)

WARNING
For security reasons, many installations will 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)) via uux.

BUGS
Only the first command of a shell pipeline may 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 << and >> are not implemented.

When invoking uux from csh(1), the ‘!’ character must be prefixed
by the ‘´ escape to inhibit csh’s history mechanism. (Quotes are
not sufficient.)