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ftp(1)

ftp(1)                           User Commands                          ftp(1)



NAME
       ftp - file transfer program

SYNOPSIS
       ftp [-adfginpstvx] [-m GSS Mech] [-T timeout]
            [hostname [port]]


DESCRIPTION
       The  ftp  command  is  the user interface to the Internet standard File
       Transfer Protocol (FTP). ftp transfers files to and from a remote  net‐
       work site.


       The  host  and  optional  port  with which ftp is to communicate can be
       specified on the  command  line.  If  this  is  done,  ftp  immediately
       attempts  to establish a connection to an FTP server on that host. Oth‐
       erwise, ftp enters its command interpreter and awaits instructions from
       the  user. When ftp is awaiting commands from the user, it displays the
       prompt ftp>.

OPTIONS
       The following options can be specified at the command line, or  to  the
       command interpreter:

       -a            Uses  GSSAPI  authentication  only. If the authentication
                     fails, this option closes the connection.


       -d            Enables debugging.


       -f            Forwards local security credentials to the remote server.


       -g            Disables filename "globbing".


       -i            Turns off  interactive  prompting  during  multiple  file
                     transfers.


       -m            Specifies the GSS-API mechanism to use. The default is to
                     use the kerberos_v5 mechanism. Supported alternatives are
                     defined in /etc/gss/mech (see mech(4)).


       -n            Does not attempt "auto-login" upon initial connection. If
                     auto-login is not disabled, ftp checks the .netrc file in
                     the  user's  home  directory  for  an entry describing an
                     account on the remote machine. If no  entry  exists,  ftp
                     prompts  for  the login name of the account on the remote
                     machine (the default is  the  login  name  on  the  local
                     machine),  and,  if necessary, prompts for a password and
                     an account with which to login.


       -p            Enables passive mode for data transfers. This command  is
                     useful  when  connecting  to  a remote host from behind a
                     connection filtering firewall.


       -s            Skips the SYST command that is sent  by  default  to  all
                     remote  servers  upon  login.  The system command is what
                     enables the automatic use of binary mode rather than  the
                     protocol default ascii mode.

                     As some older servers cannot handle the ftp command, this
                     directive is provided  to  allow  inter-operability  with
                     these servers.


       -t            Enables packet tracing (unimplemented).


       -T timeout    Enables  global  connection  timer,  specified in seconds
                     (decimal). There is a timer for  the  control  connection
                     that  is  reset  when  anything is sent to the server and
                     disabled while the client is prompting  for  user  input.
                     Another  independent timer is used to monitor incoming or
                     outgoing data connections.


       -v            Shows all responses from the remote server,  as  well  as
                     report  on data transfer statistics. This is turned on by
                     default if ftp is running interactively  with  its  input
                     coming from the user's terminal.


       -x            Attempts to use GSSAPI for authentication and encryption.
                     Data and Command channel protection is set to "private".



       The following commands can be specified to the command interpreter:

       !

           [ command ] Runs command as a shell command on the  local  machine.
           If no command is given, invokes an interactive shell.


       $ macro-name [ args ]

           Executes the macro macro-name that was defined with the macdef com‐
           mand. Arguments are passed to the macro unglobbed.


       account [ passwd ]

           Supplies 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 is  prompted  for  an  account
           password in a non-echoing input mode.


       append local-file [ remote-file ]

           Appends  a  local  file to a file on the remote machine. If remote-
           file is not specified, the local file  name  is  used,  subject  to
           alteration  by  any ntrans or nmap settings. File transfer uses the
           current settings for "representation type", "file  structure",  and
           "transfer mode".


       ascii

           Sets  the  "representation  type"  to  "network ASCII". This is the
           default type.


       bell

           Sounds a bell after each file transfer command is completed.


       binary

           Sets the "representation type" to "image".


       bye

           Terminates the FTP session with the remote server and exit ftp.  An
           EOF also terminates the session and exit.


       case

           Toggles  remote  computer  file  name case mapping during mget com‐
           mands. When case 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.


       cd remote-directory

           Changes the working directory on  the  remote  machine  to  remote-
           directory.


       cdup

           Changes  the  remote machine working directory to the parent of the
           current remote machine working directory.


       clear

           Sets the protection level on data transfers to "clear". If no  ADAT
           command succeeded, then this is the default protection level.


       close

           Terminates  the  FTP  session with the remote server, and return to
           the command interpreter. Any defined macros are erased.


       cr

           Toggles  RETURN  stripping  during  "network   ASCII"   type   file
           retrieval. Records are denoted by a RETURN/LINEFEED sequence during
           "network ASCII" type file transfer. When cr is  on  (the  default),
           RETURN  characters  are stripped from this sequence to conform with
           the UNIX system single LINEFEED record delimiter. Records  on  non-
           UNIX-system  remote  hosts  can contain single LINEFEED characters;
           when an "network ASCII" type transfer is made, these LINEFEED char‐
           acters can be distinguished from a record delimiter only when cr is
           off.


       delete remote-file

           Deletes the file remote-file on the remote machine.


       debug

           Toggles debugging mode. When debugging is on, ftp prints each  com‐
           mand sent to the remote machine, preceded by the string ->.


       dir [ remote-directory [ local-file ]]

           Prints  a  listing  of  the  directory  contents  in the directory,
           remote-directory, and, optionally, placing  the  output  in  local-
           file.  If  no directory is specified, the current working directory
           on the remote machine is used. If no local file  is  specified,  or
           local-file is −, output is sent to the terminal.


       disconnect

           A synonym for close.


       form [ format-name ]

           Sets  the  carriage  control  format subtype of the "representation
           type" to format-name. The  only  valid  format-name  is  non-print,
           which corresponds to the default "non-print" subtype.


       get remote-file [ local-file ]

           Retrieves the remote-file 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 case,
           ntrans, and nmap settings. The current settings for "representation
           type",  "file structure", and "transfer mode" are used while trans‐
           ferring the file.


       glob

           Toggles filename expansion, or "globbing", for  mdelete,  mget  and
           mput. If globbing is turned off, filenames are taken literally.

           Globbing  for  mput is done as in sh(1). For mdelete and mget, 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 radically different
           from expansion of the name of an ordinary file:  the  exact  result
           depends  on  the remote operating system and FTP server, and can be
           previewed with the command, mls remote-files −.

           mget and mput are not meant to transfer entire  directory  subtrees
           of  files.  You can do this by transferring a tar(1) archive of the
           subtree (using a "representation type" of "image"  as  set  by  the
           binary command).


       hash

           Toggles hash-sign (#) printing for each data block transferred. The
           size of a data block is 8192 bytes.


       help [ command ]

           Prints an informative message about the meaning of command.  If  no
           argument is given, ftp prints a list of the known commands.


       lcd [ directory ]

           Changes the working directory on the local machine. If no directory
           is specified, the user's home directory is used.


       ls [ -al | remote-directory [ local-file ]]

           By default, prints an abbreviated listing  of  the  contents  of  a
           directory  on  the  remote  machine.  This  default behavior can be
           changed to make ls a synonym of the dir command. This change can be
           achieved  by  setting FTP_LS_SENDS_NLST to 'no' in /etc/default/ftp
           or in the environment. See ftp(4) for details.

           The -a option lists all entries, including those that begin with  a
           dot  (.),  which are normally not listed. The -l option lists files
           in long format, giving mode, number of links, owner, group, size in
           bytes,  and time of last modification for each file. If the file is
           a special file, the size field instead contains the major and minor
           device  numbers rather than a size. If the file is a symbolic link,
           the filename is printed followed by "→" and  the  pathname  of  the
           referenced file.

           If remote-directory is left unspecified, the current working direc‐
           tory is used.

           If no local file is specified, or if local-file is −, the output is
           sent to the terminal.


       macdef macro-name

           Defines  a  macro.  Subsequent lines are stored as the macro macro-
           name. A null line (consecutive NEWLINE  characters  in  a  file  or
           RETURN  characters  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 close command is exe‐
           cuted.

           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 spe‐
           cial treatment of the $.


       mdelete remote-files

           Deletes the remote-files on the remote machine.


       mdir remote-files local-file

           Like dir, except multiple remote files can be specified. If  inter‐
           active  prompting  is  on,  ftp prompts the user to verify that the
           last argument is indeed the target local file  for  receiving  mdir
           output.


       mget remote-files

           Expands  the  remote-files  on  the remote machine and do a get for
           each file name thus produced. See glob for details on the  filename
           expansion.  Resulting  file  names are processed according to case,
           ntrans, and nmap settings. Files are  transferred  into  the  local
           working  directory,  which  can  be changed with lcd directory. New
           local directories can be created with ! mkdir directory.


       mkdir directory-name

           Makes a directory on the remote machine.


       mls remote-files local-file

           Like ls(1), except multiple  remote  files  can  be  specified.  If
           interactive  prompting  is  on, ftp prompts the user to verify that
           the last argument is indeed the target local file for receiving mls
           output.


       mode [ mode-name ]

           Sets  the "transfer mode" to mode-name. The only valid mode-name is
           stream, which corresponds to the default "stream" mode. This imple‐
           mentation only supports stream, and requires that it be specified.


       mput local-files

           Expands  wild  cards  in the list of local files given as arguments
           and do a put for each file in the  resulting  list.  See  glob  for
           details  of  filename expansion. Resulting file names are processed
           according to ntrans and nmap settings.


       nlist [ -al | remote-directory [ local-file ]]

           Prints an abbreviated listing of the contents of a directory on the
           remote  machine,  listing only those files that can be retrieved by
           the get command, unless the -a or -l option  is  used.  If  remote-
           directory  is  left  unspecified,  the current working directory is
           used.

           The -a option lists all entries, including those that begin with  a
           dot  (.),  which are normally not listed. The -l option lists files
           in long format the same way it does when used with the ls command.


       nmap [ inpattern outpattern ]

           Sets or unsets the filename mapping mechanism. If no arguments  are
           specified,  the  filename  mapping mechanism is unset. If arguments
           are specified, remote filenames are mapped during mput commands and
           put  commands issued without a specified remote target filename. If
           arguments are specified, local filenames  are  mapped  during  mget
           commands  and  get commands issued without a specified local target
           filename.

           This command is useful when connecting to a non-UNIX-system  remote
           host  with different file naming conventions or practices. The map‐
           ping follows the pattern set by inpattern and outpattern. inpattern
           is  a  template for incoming filenames (which can have already been
           processed according to the ntrans and case settings). Variable tem‐
           plating  is accomplished by including the sequences $1, $2, ..., $9
           in inpattern. Use \ to prevent this  special  treatment  of  the  $
           character. All other characters are treated literally, and are used
           to determine the nmap inpattern variable values.

           For example,  given  inpattern  $1.$2  and  the  remote  file  name
           mydata.data,  $1 would have the value mydata, and $2 would have the
           value data.

           The  outpattern  determines  the  resulting  mapped  filename.  The
           sequences  $1, $2, ..., $9 are replaced by any value resulting from
           the inpattern template. The sequence $0 is replaced by the original
           filename.  Additionally,  the  sequence  [seq1,seq2] is replaced by
           seq1 if seq1 is not a null string;  otherwise  it  is  replaced  by
           seq2.

           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.  SPACE
           characters can be included in outpattern, as in the example nmap $1
           | sed "s/ *$//" > $1. Use the \ character to prevent special treat‐
           ment of the $, [, ], and ,, characters.


       ntrans [ inchars [ outchars ] ]

           Sets  or unsets the filename character translation mechanism. If no
           arguments are specified, the filename character translation  mecha‐
           nism  is  unset.  If  arguments are specified, characters in remote
           filenames are translated during  mput  commands  and  put  commands
           issued  without  a specified remote target filename, and characters
           in local filenames are translated during mget commands and get com‐
           mands issued without a specified local target filename.

           This  command is useful when connecting to a non-UNIX-system remote
           host with different file naming conventions or  practices.  Charac‐
           ters  in  a  filename  matching a character in inchars are replaced
           with the corresponding character in outchars.  If  the  character's
           position  in  inchars  is  longer  than the length of outchars, the
           character is deleted from the file name.

           Only 16 characters can be translated when using the ntrans  command
           under  ftp.  Use  case  (described above) if needing to convert the
           entire alphabet.


       open host [ port ]

           Establishes a connection to  the  specified  host  FTP  server.  An
           optional  port  number can be supplied, in which case, ftp attempts
           to contact an FTP server at that port. If the auto-login option  is
           on  (default  setting),  ftp also attempts to automatically log the
           user in to the FTP server.


       passive

           Toggles passive mode. When passive  mode  is  turned  on,  the  ftp
           client sends the PASV command requesting that the FTP 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 passive mode is turned off, the ftp client sends the  PORT
           command  to  the server specifying an address for the remote server
           to connect back to. Passive mode is useful when the connections  to
           the ftp client are controlled, for example, when behind a firewall.
           When connecting to an IPv6-enabled FTP server, EPSV can be used  in
           place of PASV and EPRT in place of PORT.


       private

           Sets  the  protection  level  on  data transfers to "private". Data
           transmissions  are  confidentiality—  and  integrity—protected   by
           encryption.  If  no  ADAT command succeeded, then the only possible
           level is "clear".


       prompt

           Toggles interactive prompting. Interactive prompting occurs  during
           multiple  file  transfers to allow the user to selectively retrieve
           or store files. By default, prompting is turned on. If prompting is
           turned  off,  any mget or mput transfers all files, and any mdelete
           deletes all files.


       protect protection-level

           Sets the protection level on data  transfers  to  protection-level.
           The valid protection levels are "clear" for unprotected data trans‐
           missions, "safe" for data  transmissions  that  are  integrity-pro‐
           tected  by cryptographic checksum, and "private" for data transmis‐
           sions that are confidentiality— and integrity— protected by encryp‐
           tion. If no ADAT command succeeded, then the only possible level is
           "clear". If no level is specified, the current  level  is  printed.
           The default protection level is "clear".


       proxy ftp-command

           Executes  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 proxy
           command should be an open, to establish the secondary control  con‐
           nection.  Enter  the command proxy ? to see other FTP commands exe‐
           cutable on the secondary connection.

           The following commands behave differently when prefaced  by  proxy:
           open  does  not  define  new  macros during the auto-login process,
           close does not erase  existing  macro  definitions,  get  and  mget
           transfer  files  from the host on the primary control connection to
           the host on the secondary control connection, and put,  mputd,  and
           append  transfer  files from the host on the secondary control con‐
           nection to the host on the primary control connection.

           Third party file transfers depend upon support of the PASV  command
           by the server on the secondary control connection.


       put local-file [ remote-file ]

           Stores  a  local file on the remote machine. If remote-file is left
           unspecified, the local file name is used after processing according
           to  any  ntrans  or  nmap  settings in naming the remote file. File
           transfer uses the current settings for "representation type", "file
           structure", and "transfer mode".


       pwd

           Prints  the  name  of  the  current working directory on the remote
           machine.


       quit

           A synonym for bye.


       quote arg1 arg2 ...

           Sends the arguments specified, verbatim, to the remote FTP  server.
           A single FTP reply code is expected in return. (The remotehelp com‐
           mand displays a list of valid arguments.)

           quote should be used only by experienced  users  who  are  familiar
           with the FTP protocol.


       recv remote-file [ local-file ]

           A synonym for get.


       reget remote-file [ local-file ]

           The  reget  command acts like get, except that if local-file exists
           and is smaller than remote-file, local-file is  presumed  to  be  a
           partially  transferred copy of remote-file and the transfer is con‐
           tinued from the apparent point of failure. This command  is  useful
           when transferring large files over networks that are prone to drop‐
           ping connections.


       remotehelp [ command-name ]

           Requests help from the remote FTP  server.  If  a  command-name  is
           specified it is supplied to the server as well.


       rename from to

           Renames the file from on the remote machine to have the name to.


       reset

           Clears  reply  queue.  This  command  re-synchronizes command/reply
           sequencing with the remote FTP  server.  Resynchronization  can  be
           necessary  following  a violation of the FTP protocol by the remote
           server.


       restart [ marker ]

           Restarts the immediately following get  or  put  at  the  indicated
           marker.  On  UNIX systems, marker is usually a byte offset into the
           file. When followed by an mget, the restart applies  to  the  first
           get  performed. Specifying a marker of 0 clears the restart marker.
           If no argument is specified, the current  restart  status  is  dis‐
           played.


       rmdir directory-name

           Deletes a directory on the remote machine.


       runique

           Toggles 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 get or mget 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 is reported. runique does not affect
           local files generated from a shell command. The  default  value  is
           off.


       safe

           Sets  the protection level on data transfers to "safe". Data trans‐
           missions are integrity-protected by cryptographic checksum.  If  no
           ADAT command succeeded, then the only possible level is "clear".


       send local-file [ remote-file ]

           A synonym for put.


       sendport

           Toggles the use of PORT commands. By default, ftp attempts to use a
           PORT command when establishing a connection for each data transfer.
           The  use of PORT commands can prevent delays when performing multi‐
           ple file transfers. If the PORT command fails, ftp uses the default
           data port. When the use of PORT commands is disabled, no attempt is
           made to use PORT commands for each data transfer.  This  is  useful
           when connected to certain FTP implementations that ignore PORT com‐
           mands but incorrectly indicate they have been accepted.


       site arg1 [ arg2 ] ...

           Sends the arguments specified, verbatim, to the remote  FTP  server
           as a SITE command.


       status

           Show the current status of ftp.


       struct [ struct-name ]

           Sets  the file structure to struct-name. The only valid struct-name
           is file, which corresponds to the  default  "file"  structure.  The
           implementation  only  supports file, and requires that it be speci‐
           fied.


       sunique

           Toggles storing of files on remote machine under unique file names.
           The  remote FTP server must support the STOU command for successful
           completion. The remote server  reports  the  unique  name.  Default
           value is off.


       tcpwindow [ size ]

           Sets  the TCP window size to be used for data connections. Specify‐
           ing a size of 0 stops the explicit setting of the TCP  window  size
           on  data connections. If no argument is specified, the current set‐
           ting is displayed.


       tenex

           Sets the "representation type" to that  needed  to  talk  to  TENEX
           machines.


       trace

           Toggles packet tracing (unimplemented).


       type [ type-name ]

           Sets  the  "representation type" to type-name. The valid type-names
           are ascii for "network ASCII", binary or  image  for  "image",  and
           tenex  for "local byte size" with a byte size of 8 (used to talk to
           TENEX machines). If no type  is  specified,  the  current  type  is
           printed. The default type is "network ASCII".


       user user-name [ password [ account ]]

           Identify  yourself to the remote FTP server. If the password is not
           specified and the server requires it, ftp prompts the user  for  it
           (after disabling local echo). If an account field is not specified,
           and the FTP server requires it, the user is prompted for it. If  an
           account  field  is  specified, an account command is relayed to the
           remote server after the login sequence is completed if  the  remote
           server  did  not  require  it for logging in. Unless ftp is invoked
           with "auto-login" disabled, this process is done  automatically  on
           initial connection to the FTP server.


       verbose

           Toggles  verbose  mode. In verbose mode, all responses from the FTP
           server are displayed to the user. In addition, if verbose  mode  is
           on,  when a file transfer completes, statistics regarding the effi‐
           ciency of the transfer are reported. By default, verbose mode is on
           if ftp's commands are coming from a terminal, and off otherwise.


       ? [ command ]

           A synonym for help.



       Command  arguments  which have embedded spaces can be quoted with quote
       (") marks.


       If any command argument which is not indicated as being optional is not
       specified, ftp prompts for that argument.

ABORTING A FILE TRANSFER
       To  abort  a  file  transfer,  use  the terminal interrupt key. Sending
       transfers is immediately halted.  Receiving  transfers  are  halted  by
       sending an FTP protocol ABOR command to the remote server, and discard‐
       ing any further data received. The speed at which this is  accomplished
       depends  upon  the  remote server's support for ABOR processing. If the
       remote server does not support the ABOR command, an  ftp>  prompt  does
       not  appear until the remote server has completed sending the requested
       file.


       The terminal interrupt key sequence is ignored when ftp  has  completed
       any  local processing and is awaiting a reply from the remote server. A
       long delay in this mode can result from the ABOR  processing  described
       above, or from unexpected behavior by the remote server, including vio‐
       lations of the ftp protocol.  If  the  delay  results  from  unexpected
       remote server behavior, the local ftp program must be killed by hand.

FILE NAMING CONVENTIONS
       Local  files  specified  as  arguments  to  ftp  commands are processed
       according to the following rules.

       1)    If the file name − is specified, the standard input (for reading)
             or standard output (for writing) is used.


       2)    If  the  first  character of the file name is |, the remainder of
             the argument is interpreted as a shell command. ftp then forks  a
             shell,  using  popen(3C)  with  the  argument supplied, and reads
             (writes) from the standard output (standard input) of that shell.
             If the shell command includes SPACE characters, the argument must
             be quoted; for example, | ls -lt. A particularly  useful  example
             of this mechanism is: "dir | more".


       3)    Failing  the  above  checks,  if  globbing is enabled, local file
             names are expanded according to the rules used in the sh(1);  see
             the  glob command. If the ftp command expects a single local file
             (for example, put), only the  first  filename  generated  by  the
             globbing operation is used.


       4)    For  mget  commands  and get commands with unspecified local file
             names, the local filename is the remote filename,  which  can  be
             altered  by  a case, ntrans, or nmap setting. The resulting file‐
             name can then be altered if runique is on.


       5)    For mput commands and put commands with unspecified  remote  file
             names,  the  remote  filename is the local filename, which can be
             altered by a ntrans or nmap setting. The resulting  filename  can
             then be altered by the remote server if sunique is on.


FILE TRANSFER PARAMETERS
       The FTP specification specifies many parameters which can affect a file
       transfer.


       The "representation type" can be  one  of  "network  ASCII",  "EBCDIC",
       "image",  or "local byte size" with a specified byte size (for PDP-10's
       and PDP-20's mostly). The "network ASCII" and  "EBCDIC"  types  have  a
       further  subtype  which specifies whether vertical format control (NEW‐
       LINE characters, form feeds, and so on) are to be passed through ("non-
       print"),  provided in TELNET format ("TELNET format controls"), or pro‐
       vided in ASA (FORTRAN) ("carriage control (ASA)") format. ftp  supports
       the  "network ASCII" (subtype "non-print" only) and "image" types, plus
       "local byte size" with a byte size of 8 for  communicating  with  TENEX
       machines.


       The  "file structure" can be one of file (no record structure), record,
       or page. ftp supports only the default value, which is file.


       The "transfer mode" can be one of stream,  block,  or  compressed.  ftp
       supports only the default value, which is stream.

USAGE
       See  largefile(5)  for  the  description  of  the  behavior of ftp when
       encountering files greater than or equal to 2 Gbyte (2^31 bytes).


       The ftp command is IPv6-enabled. See ip6(7P).

FILES
       ~/.netrc

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:




       tab()  box;  cw(2.75i)  |cw(2.75i)  lw(2.75i)   |lw(2.75i)   ATTRIBUTE
       TYPEATTRIBUTE VALUE _ Availabilitynetwork/ftp _ CSIenabled


SEE ALSO
       ls(1),  rcp(1), sh(1), tar(1), popen(3C), ftp(4), ftpusers(4), mech(4),
       netrc(4), attributes(5), largefile(5), ip6(7P)


       Allman, M., Ostermann, S., and Metz, C. RFC 2428,  FTP  Extensions  for
       IPv6 and NATs. The Internet Society. September 1998.


       Lunt, S. J. RFC 2228, FTP Security Extensions. Internet Draft. November
       1993.


       Postel, Jon, and Joyce Reynolds. RFC 959, File Transfer  Protocol  (FTP
       ). Network Information Center. October 1985.


       Piscitello,  D.  RFC 1639, FTP Operation Over Big Address Records (FOO‐
       BAR). Network Working Group. June 1994.

NOTES
       Failure to log in can arise from an explicit denial by the  remote  FTP
       server   because   the   account   is  listed  in  /etc/ftpusers.   See
       ftpusers(4).


       Correct execution of many commands depends upon proper behavior by  the
       remote server.


       An  error in the treatment of carriage returns in the 4.2 BSD code han‐
       dling transfers with a "representation type"  of  "network  ASCII"  has
       been  corrected.  This  correction can result in incorrect transfers of
       binary files to and from 4.2 BSD servers using a "representation  type"
       of "network ASCII". Avoid this problem by using the "image" type.



SunOS 5.11                        19 May 2015                           ftp(1)
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