копирование в систему (to-system copy)
Пролог (Prolog)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
Имя (Name)
uucp — system-to-system copy
Синопсис (Synopsis)
uucp [-cCdfjmr] [-n user] source-file... destination-file
Описание (Description)
The uucp utility shall copy files named by the source-file
argument to the destination-file argument. The files named can be
on local or remote systems.
The uucp utility cannot guarantee support for all character
encodings in all circumstances. For example, transmission data
may be restricted to 7 bits by the underlying network, 8-bit data
and filenames need not be portable to non-internationalized
systems, and so on. Under these circumstances, it is recommended
that only characters defined in the ISO/IEC 646:1991 standard
International Reference Version (equivalent to ASCII) 7-bit range
of characters be used, and that only characters defined in the
portable filename character set be used for naming files. The
protocol for transfer of files is unspecified by POSIX.1‐2008.
Typical implementations of this utility require a communications
line configured to use the Base Definitions volume of
POSIX.1‐2017, Chapter 11, General Terminal Interface, but other
communications means may be used. On systems where there are no
available communications means (either temporarily or
permanently), this utility shall write an error message
describing the problem and exit with a non-zero exit status.
Параметры (Options)
The uucp utility shall conform to the Base Definitions volume of
POSIX.1‐2017, Section 12.2, Utility Syntax Guidelines.
The following options shall be supported:
-c Do not copy 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.
-d Make all necessary directories for the file copy
(default).
-f Do not make intermediate directories for the file copy.
-j Write the job identification string to standard output.
This job identification can be used by uustat to obtain
the status or terminate a job.
-m Send mail to the requester when the copy is completed.
-n user Notify user on the remote system that a file was sent.
-r Do not start the file transfer; just queue the job.
Операнды (Operands)
The following operands shall be supported:
destination-file, source-file
A pathname of a file to be copied to, or from,
respectively. Either name can be a pathname on the
local machine, or can have the form:
system-name!pathname
where system-name is taken from a list of system names
that uucp knows about. The destination system-name can
also be a list of names such as:
system-name!system-name!...!system-name!pathname
in which case, an attempt is made to send the file via
the specified route to the destination. Care should be
taken to ensure that intermediate nodes in the route
are willing to forward information.
The shell pattern matching notation characters '?',
'*', and "[...]" appearing in pathname shall be
expanded on the appropriate system.
Pathnames can be one of:
1. An absolute pathname.
2. A pathname preceded by ~user where user 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 is to the
public directory (called PUBDIR; the actual
location of PUBDIR is implementation-defined).
3. A pathname preceded by ~/destination where
destination is appended to PUBDIR.
Note: This destination is treated as a filename
unless more than one file is being
transferred by this request or the
destination is already a directory. To
ensure that it is a directory, follow the
destination with a '/'. For example, ~/dan/
as the destination makes the directory
PUBDIR/dan if it does not exist and puts the
requested files in that directory.
4. Anything else shall be prefixed by the current
directory.
If the result is an erroneous pathname for the remote
system, the copy shall fail. If the destination-file is
a directory, the last part of the source-file name
shall be used.
The read, write, and execute permissions given by uucp
are implementation-defined.
Стандартный ввод (Stdin)
Not used.
Входные файлы (Input files)
The files to be copied are regular files.
Переменные окружения (Environment variables)
The following environment variables shall affect the execution of
uucp:
LANG Provide a default value for the internationalization
variables that are unset or null. (See the Base
Definitions volume of POSIX.1‐2017, Section 8.2,
Internationalization Variables for the precedence of
internationalization variables used to determine the
values of locale categories.)
LC_ALL If set to a non-empty string value, override the values
of all the other internationalization variables.
LC_COLLATE
Determine the locale for the behavior of ranges,
equivalence classes, and multi-character collating
elements within bracketed filename patterns.
LC_CTYPE Determine the locale for the interpretation of
sequences of bytes of text data as characters (for
example, single-byte as opposed to multi-byte
characters in arguments and input files) and the
behavior of character classes within bracketed filename
patterns (for example, "'[[:lower:]]*'").
LC_MESSAGES
Determine the locale that should be used to affect the
format and contents of diagnostic messages written to
standard error, and informative messages written to
standard output.
NLSPATH Determine the location of message catalogs for the
processing of LC_MESSAGES.
Асинхронные события (Asynchronous events)
Default.
Стандартный вывод (Stdout)
Not used.
Стандартный вывод сообщений (Stderr)
The standard error shall be used only for diagnostic messages.
Выходные файлы (Output files)
The output files (which may be on other systems) are copies of
the input files.
If -m is used, mail files are modified.
Расширенное описание (Extended description)
None.
Статус выхода (Exit)
The following exit values shall be returned:
0 Successful completion.
>0 An error occurred.
Последствия ошибок (Consequences of errors)
Default.
The following sections are informative.
Использование в приложениях (Application usage)
This utility is part of the UUCP Utilities option and need not be
supported by all implementations.
The domain of remotely accessible files can (and for obvious
security reasons usually should) be severely restricted.
Note that the '!' character in addresses has to be escaped when
using csh as a command interpreter because of its history
substitution syntax. For ksh and sh the escape is not necessary,
but may be used.
As noted above, shell metacharacters appearing in pathnames are
expanded on the appropriate system. On an internationalized
system, this is done under the control of local settings of
LC_COLLATE and LC_CTYPE. Thus, care should be taken when using
bracketed filename patterns, as collation and typing rules may
vary from one system to another. Also be aware that certain types
of expression (that is, equivalence classes, character classes,
and collating symbols) need not be supported on non-
internationalized systems.
Примеры (Examples)
None.
Обоснование (Rationale)
None.
Будущие направления (Future directions)
None.
Смотри также (See also)
mailx(1p), uuencode(1p), uustat(1p), uux(1p)
The Base Definitions volume of POSIX.1‐2017, Chapter 8,
Environment Variables, Chapter 11, General Terminal Interface,
Section 12.2, Utility Syntax Guidelines
