file transfer program is the user interface to the standard File Transfer Protocol. The program allows a user to transfer files to and from a remote network site. Options may be specified at the command line, or to the command interpreter. Verbose option forces to show all responses from the remote server, as well as report on data transfer statistics. Restrains from attempting [Lq]auto-login[Rq] upon initial connection. If auto-login is enabled, will check the (see below) file in the user's home directory for an entry describing an account on the remote machine. If no entry exists, will prompt for the remote machine login name (default is the user identity on the local machine), and, if necessary, prompt for a password and an account with which to login. Turns off interactive prompting during multiple file transfers. Enables debugging. Disables file name globbing. The client host with which is to communicate may be specified on the command line. If this is done, will immediately attempt to establish a connection to an server on that host; otherwise, will enter its command interpreter and await instructions from the user. When is awaiting commands from the user the prompt is provided to the user. The following commands are recognized by Invoke an interactive shell on the local machine. If there are arguments, the first is taken to be a command to execute directly, with the rest of the arguments as its arguments. Execute the macro that was defined with the command. Arguments are passed to the macro unglobbed. Supply a supplemental password required by a remote system for access to resources once a login has been successfully completed. If no argument is included, the user will be prompted for an account password in a non-echoing input mode. Append a local file to a file on the remote machine. If is left unspecified, the local file name is used in naming the remote file after being altered by any or setting. File transfer uses the current settings for and Set the file transfer to network This is the default type. Arrange that a bell be sounded after each file transfer command is completed. Set the file transfer to support binary image transfer. Terminate the session with the remote server and exit An end of file will also terminate the session and exit. Toggle remote computer file name case mapping during commands. When is on (default is off), remote computer file names with all letters in upper case are written in the local directory with the letters mapped to lower case. Change the working directory on the remote machine to Change the remote machine working directory to the parent of the current remote machine working directory. Change the permission modes of the file on the remote sytem to Terminate the session with the remote server, and return to the command interpreter. Any defined macros are erased. Toggle carriage return stripping during ascii type file retrieval. Records are denoted by a carriage return/linefeed sequence during ascii type file transfer. When is on (the default), carriage returns are stripped from this sequence to conform with the single linefeed record delimiter. Records on remote systems may contain single linefeeds; when an ascii type transfer is made, these linefeeds may be distinguished from a record delimiter only when is off. Delete the file on the remote machine. Toggle debugging mode. If an optional is specified it is used to set the debugging level. When debugging is on, prints each command sent to the remote machine, preceded by the string Print a listing of the directory contents in the directory, and, optionally, placing the output in If interactive prompting is on, will prompt the user to verify that the last argument is indeed the target local file for receiving output. If no directory is specified, the current working directory on the remote machine is used. If no local file is specified, or is output comes to the terminal. A synonym for Set the file transfer to The default format is [Lq]file[Rq]. Retrieve the and store it on the local machine. If the local file name is not specified, it is given the same name it has on the remote machine, subject to alteration by the current and settings. The current settings for and are used while transferring the file. Toggle filename expansion for and If globbing is turned off with the file name arguments are taken literally and not expanded. Globbing for is done as in For and each remote file name is expanded separately on the remote machine and the lists are not merged. Expansion of a directory name is likely to be different from expansion of the name of an ordinary file: the exact result depends on the foreign operating system and ftp server, and can be previewed by doing Note: and are not meant to transfer entire directory subtrees of files. That can be done by transferring a archive of the subtree (in binary mode). Toggle hash-sign (``#'') printing for each data block transferred. The of a data block can optionally be specified. If not given, it defaults to 1024 bytes. Print an informative message about the meaning of If no argument is given, prints a list of the known commands. Set the inactivity timer on the remote server to seconds. If is omitted, the current inactivity timer is printed. Change the working directory on the local machine. If no is specified, the user's home directory is used. Print a listing of the contents of a directory on the remote machine. The listing includes any system-dependent information that the server chooses to include; for example, most systems will produce output from the command (See also If is left unspecified, the current working directory is used. If interactive prompting is on, will prompt the user to verify that the last argument is indeed the target local file for receiving output. If no local file is specified, or if is the output is sent to the terminal. Define a macro. Subsequent lines are stored as the macro a null line (consecutive newline characters in a file or carriage returns from the terminal) terminates macro input mode. There is a limit of 16 macros and 4096 total characters in all defined macros. Macros remain defined until a command is executed. The macro processor interprets `$' and `\' as special characters. A `$' followed by a number (or numbers) is replaced by the corresponding argument on the macro invocation command line. A `$' followed by an `i' signals that macro processor that the executing macro is to be looped. On the first pass `$i' is replaced by the first argument on the macro invocation command line, on the second pass it is replaced by the second argument, and so on. A `\' followed by any character is replaced by that character. Use the `\' to prevent special treatment of the `$'. Delete the on the remote machine. Like except multiple remote files may be specified. If interactive prompting is on, will prompt the user to verify that the last argument is indeed the target local file for receiving output. Expand the on the remote machine and do a for each file name thus produced. See for details on the filename expansion. Resulting file names will then be processed according to and settings. Files are transferred into the local working directory, which can be changed with new local directories can be created with Make a directory on the remote machine. Like except multiple remote files may be specified, and the must be specified. If interactive prompting is on, will prompt the user to verify that the last argument is indeed the target local file for receiving output. Set the file transfer to The default mode is [Lq]stream[Rq] mode. Show the last modification time of the file on the remote machine. Expand wild cards in the list of local files given as arguments and do a for each file in the resulting list. See for details of filename expansion. Resulting file names will then be processed according to and settings. Get the file only if the modification time of the remote file is more recent that the file on the current system. If the file does not exist on the current system, the remote file is considered Otherwise, this command is identical to Print a list of the files in a directory on the remote machine. If is left unspecified, the current working directory is used. If interactive prompting is on, will prompt the user to verify that the last argument is indeed the target local file for receiving output. If no local file is specified, or if is the output is sent to the terminal. Set or unset the filename mapping mechanism. If no arguments are specified, the filename mapping mechanism is unset. If arguments are specified, remote filenames are mapped during commands and commands issued without a specified remote target filename. If arguments are specified, local filenames are mapped during commands and commands issued without a specified local target filename. This command is useful when connecting to a remote computer with different file naming conventions or practices. The mapping follows the pattern set by and is a template for incoming filenames (which may have already been processed according to the and settings). Variable templating is accomplished by including the sequences `$1', `$2', ..., `$9' in Use `\' to prevent this special treatment of the `$' character. All other characters are treated literally, and are used to determine the variable values. For example, given $1.$2 and the remote file name "mydata.data", $1 would have the value "mydata", and $2 would have the value "data". The determines the resulting mapped filename. The sequences `$1', `$2', ...., `$9' are replaced by any value resulting from the template. The sequence `$0' is replace by the original filename. Additionally, the sequence is replaced by if is not a null string; otherwise it is replaced by For example, the command nmap $1.$2.$3 [$1,$2].[$2,file] would yield the output filename "myfile.data" for input filenames "myfile.data" and "myfile.data.old", "myfile.file" for the input filename "myfile", and "myfile.myfile" for the input filename ".myfile". Spaces may be included in as in the example: `nmap $1 sed "s/ *$//" > $1' . Use the `\' character to prevent special treatment of the `$','[','[', and `,' characters. Set or unset the filename character translation mechanism. If no arguments are specified, the filename character translation mechanism is unset. If arguments are specified, characters in remote filenames are translated during commands and commands issued without a specified remote target filename. If arguments are specified, characters in local filenames are translated during commands and commands issued without a specified local target filename. This command is useful when connecting to a remote computer with different file naming conventions or practices. Characters in a filename matching a character in are replaced with the corresponding character in If the character's position in is longer than the length of the character is deleted from the file name. Establish a connection to the specified server. An optional port number may be supplied, in which case, will attempt to contact an server at that port. If the option is on (default), will also attempt to automatically log the user in to the server (see below). Toggle passive mode. If passive mode is turned on (default is off), the ftp client will send a command for all data connections instead of the usual command. The command requests that the remote server open a port for the data connection and return the address of that port. The remote server listens on that port and the client connects to it. When using the more traditional command, the client listens on a port and sends that address to the remote server, who connects back to it. Passive mode is useful when using through a gateway router or host that controls the directionality of traffic. (Note that though ftp servers are required to support the command by RFC 1123, some do not.) Toggle interactive prompting. Interactive prompting occurs during multiple file transfers to allow the user to selectively retrieve or store files. If prompting is turned off (default is on), any or will transfer all files, and any will delete all files. Execute an ftp command on a secondary control connection. This command allows simultaneous connection to two remote ftp servers for transferring files between the two servers. The first command should be an to establish the secondary control connection. Enter the command "proxy ?" to see other ftp commands executable on the secondary connection. The following commands behave differently when prefaced by will not define new macros during the auto-login process, will not erase existing macro definitions, and transfer files from the host on the primary control connection to the host on the secondary control connection, and and transfer files from the host on the secondary control connection to the host on the primary control connection. Third party file transfers depend upon support of the ftp protocol command by the server on the secondary control connection. Store a local file on the remote machine. If is left unspecified, the local file name is used after processing according to any or settings in naming the remote file. File transfer uses the current settings for and Print the name of the current working directory on the remote machine. A synonym for The arguments specified are sent, verbatim, to the remote server. A synonym for get. Reget acts like get, except that if exists and is smaller than is presumed to be a partially transferred copy of and the transfer is continued from the apparent point of failure. This command is useful when transferring very large files over networks that are prone to dropping connections. Request help from the remote server. If a is specified it is supplied to the server as well. With no arguments, show status of remote machine. If is specified, show status of on remote machine. Rename the file on the remote machine, to the file Clear reply queue. This command re-synchronizes command/reply sequencing with the remote ftp server. Resynchronization may be necessary following a violation of the ftp protocol by the remote server. Restart the immediately following or at the indicated On systems, marker is usually a byte offset into the file. Delete a directory on the remote machine. Toggle storing of files on the local system with unique filenames. If a file already exists with a name equal to the target local filename for a or command, a ".1" is appended to the name. If the resulting name matches another existing file, a ".2" is appended to the original name. If this process continues up to ".99", an error message is printed, and the transfer does not take place. The generated unique filename will be reported. Note that will not affect local files generated from a shell command (see below). The default value is off. A synonym for put. Toggle the use of commands. By default, will attempt to use a command when establishing a connection for each data transfer. The use of commands can prevent delays when performing multiple file transfers. If the command fails, will use the default data port. When the use of commands is disabled, no attempt will be made to use commands for each data transfer. This is useful for certain implementations which do ignore commands but, incorrectly, indicate they've been accepted. The arguments specified are sent, verbatim, to the remote server as a command. Return size of on remote machine. Show the current status of Set the file transfer to By default [Lq]stream[Rq] structure is used. Toggle storing of files on remote machine under unique file names. Remote ftp server must support ftp protocol command for successful completion. The remote server will report unique name. Default value is off. Show the type of operating system running on the remote machine. Set the file transfer type to that needed to talk to machines. Toggle packet tracing. Set the file transfer to If no type is specified, the current type is printed. The default type is network Set the default umask on the remote server to If is omitted, the current umask is printed. Identify yourself to the remote server. If the is not specified and the server requires it, will prompt the user for it (after disabling local echo). If an field is not specified, and the server requires it, the user will be prompted for it. If an field is specified, an account command will be relayed to the remote server after the login sequence is completed if the remote server did not require it for logging in. Unless is invoked with [Lq]auto-login[Rq] disabled, this process is done automatically on initial connection to the server. Toggle verbose mode. In verbose mode, all responses from the server are displayed to the user. In addition, if verbose is on, when a file transfer completes, statistics regarding the efficiency of the transfer are reported. By default, verbose is on. A synonym for help. Command arguments which have embedded spaces may be quoted with quote `"' marks. To abort a file transfer, use the terminal interrupt key (usually Ctrl-C). Sending transfers will be immediately halted. Receiving transfers will be halted by sending a ftp protocol command to the remote server, and discarding any further data received. The speed at which this is accomplished depends upon the remote server's support for processing. If the remote server does not support the command, an prompt will not appear until the remote server has completed sending the requested file. The terminal interrupt key sequence will be ignored when has completed any local processing and is awaiting a reply from the remote server. A long delay in this mode may result from the ABOR processing described above, or from unexpected behavior by the remote server, including violations of the ftp protocol. If the delay results from unexpected remote server behavior, the local program must be killed by hand. Files specified as arguments to commands are processed according to the following rules. If the file name is specified, the (for reading) or (for writing) is used. If the first character of the file name is the remainder of the argument is interpreted as a shell command. then forks a shell, using with the argument supplied, and reads (writes) from the stdout (stdin). If the shell command includes spaces, the argument must be quoted; e.g. [Lq]" ls -lt"[Rq]. A particularly useful example of this mechanism is: [Lq]dir more[Rq]. Failing the above checks, if ``globbing'' is enabled, local file names are expanded according to the rules used in the c.f. the command. If the command expects a single local file (.e.g. only the first filename generated by the "globbing" operation is used. For commands and commands with unspecified local file names, the local filename is the remote filename, which may be altered by a or setting. The resulting filename may then be altered if is on. For commands and commands with unspecified remote file names, the remote filename is the local filename, which may be altered by a or setting. The resulting filename may then be altered by the remote server if is on. The FTP specification specifies many parameters which may affect a file transfer. The may be one of [Lq]ascii[Rq], [Lq]image[Rq] (binary), [Lq]ebcdic[Rq], and [Lq]local byte size[Rq] (for and mostly). supports the ascii and image types of file transfer, plus local byte size 8 for mode transfers. supports only the default values for the remaining file transfer parameters: and The file contains login and initialization information used by the auto-login process. It resides in the user's home directory. The following tokens are recognized; they may be separated by spaces, tabs, or new-lines: Identify a remote machine The auto-login process searches the file for a token that matches the remote machine specified on the command line or as an command argument. Once a match is made, the subsequent tokens are processed, stopping when the end of file is reached or another or a token is encountered. This is the same as except that matches any name. There can be only one token, and it must be after all tokens. This is normally used as: thereby giving the user anonymous ftp login to machines not specified in This can be overridden by using the flag to disable auto-login. Identify a user on the remote machine. If this token is present, the auto-login process will initiate a login using the specified Supply a password. If this token is present, the auto-login process will supply the specified string if the remote server requires a password as part of the login process. Note that if this token is present in the file for any user other than will abort the auto-login process if the is readable by anyone besides the user. Supply an additional account password. If this token is present, the auto-login process will supply the specified string if the remote server requires an additional account password, or the auto-login process will initiate an command if it does not. Define a macro. This token functions like the command functions. A macro is defined with the specified name; its contents begin with the next line and continue until a null line (consecutive new-line characters) is encountered. If a macro named is defined, it is automatically executed as the last step in the auto-login process. utilizes the following environment variables. For default location of a file, if one exists. For default shell. The command appeared in Correct execution of many commands depends upon proper behavior by the remote server. An error in the treatment of carriage returns in the ascii-mode transfer code has been corrected. This correction may result in incorrect transfers of binary files to and from servers using the ascii type. Avoid this problem by using the binary image type.

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  Copyright 2003   by The Free Software Foundation     Updated Jun 2003