| FTP(1) | General Commands Manual | FTP(1) | 
ftp —
| ftp | [ -46AadefginpRtVv?] [-Nnetrc] [-ooutput] [-Pport] [-qquittime] [-rretry] [-ssrcaddr] [-Tdir,max[,inc]]
      [-xxfersize]
      [[user@]host
      [port]]
      [[user@]host:[path][/]]
      [file:///path]
      [ftp://[user[:password]@]host[:port]/path[/][;type=type]]
      [http://[user[:password]@]host[:port]/path]
      [https://[user[:password]@]host[:port]/path]
      ... | 
| ftp | -uurl file ... | 
ftp is the user interface to the Internet standard File
  Transfer Protocol. The program allows a user to transfer files to and from a
  remote network site.
The last five arguments will fetch a file using the FTP or HTTP protocols, or by direct copying, into the current directory. This is ideal for scripts. Refer to AUTO-FETCHING FILES below for more information.
Options may be specified at the command line, or to the command interpreter.
-4ftp to only use IPv4 addresses.-6ftp to only use IPv6 addresses.-Aftp will try to
      use passive mode FTP and fall back to active mode if passive is not
      supported by the server. This option causes ftp to
      always use an active connection. It is only useful for connecting to very
      old servers that do not implement passive mode properly.-aftp to bypass normal login procedure, and
      use an anonymous login instead.-d-e-f-g-i-N
    netrc-nftp from attempting
      “auto-login” upon initial connection for non auto-fetch
      transfers. If auto-login is enabled, ftp will
      check the .netrc (see below) file in the user's
      home directory for an entry describing an account on the remote machine.
      If no entry exists, ftp 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. To override the auto-login for auto-fetch transfers, specify the
      username (and optionally, password) as appropriate.-o
    output-P
    port-pftp
      now tries to use passive mode by default, falling back to active mode if
      the server does not support passive connections.-q
    quittime-R-r
    wait-s
    srcaddr-t-T
    direction,maximum[,increment]rate for more information.-u
    url file ...ftp://’ URL types as supported by
      auto-fetch (with an optional target filename for single file uploads), and
      file is one or more local files to be uploaded.-Vverbose and
      progress, overriding the default of enabled when
      output is to a terminal.-vverbose and
      progress. This is the default if output is to a
      terminal (and in the case of progress,
      ftp is the foreground process). Forces
      ftp to show all responses from the remote server,
      as well as report on data transfer statistics.-x
    xfersizexferbuf
      for more information.-?The client host with which ftp is to
    communicate may be specified on the command line. If this is done,
    ftp will immediately attempt to establish a
    connection to an FTP server on that host; otherwise,
    ftp will enter its command interpreter and await
    instructions from the user. When ftp is awaiting
    commands from the user the prompt
    ‘ftp>’ is provided to the user. The
    following commands are recognized by ftp:
!
    [command [args]]$
    macro-name [args]macdef command. Arguments are passed to the
      macro unglobbed.account
    [passwd]append
    local-file [remote-file]ntrans or nmap setting.
      File transfer uses the current settings for type,
      format, mode, and
      structure.asciitype to network ASCII. This
      is the default type.bellbinarytype to support binary image
      transfer.byeftp. An end of file will also terminate the
      session and exit.caseget, mget and
      mput commands. 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-directorycdupchmod
    mode remote-fileclosecrcr is on (the default), carriage
      returns are stripped from this sequence to conform with the
      UNIX single linefeed record delimiter. Records on
      non-UNIX remote systems may contain single
      linefeeds; when an ascii type transfer is made, these linefeeds may be
      distinguished from a record delimiter only when cr
      is off.debug
    [debug-value]ftp prints each command sent to the remote
      machine, preceded by the string
      ‘-->’.delete
    remote-filedir
    [remote-path [local-file]]ls
      -l’. If remote-path is left
      unspecified, the current working directory is used. If interactive
      prompting is on, ftp will prompt the user to
      verify that the last argument is indeed the target local file for
      receiving dir output. If no local file is
      specified, or if local-file is
      ‘-’, the output is sent to the
      terminal.disconnectclose.editepsv,
    epsv4, epsv6EPSV and
      EPRT commands on all IP, IPv4, and IPv6
      connections respectively. First try
      EPSV/EPRT, and then
      PASV/PORT. This is enabled
      by default. If an extended command fails then this option will be
      temporarily disabled for the duration of the current connection, or until
      epsv, epsv4, or
      epsv6 is executed again.exitbye.featuresFEAT command).fget
    localfileform
    formatform to
      format. The default (and only supported) format is
      “non-print”.ftp
    host [port]open.gate
    [host [port]]FTPSERVER environment variable). If
      host is given, then gate-ftp mode will be enabled,
      and the gate-ftp server will be set to host. If
      port is also given, that will be used as the port to
      connect to on the gate-ftp server.get
    remote-file [local-file]case, ntrans, and
      nmap settings. The current settings for
      type, form,
      mode, and structure are
      used while transferring the file.globmdelete,
      mget, mput, and
      mreget. If globbing is turned off with
      glob, the file name arguments are taken literally
      and not expanded. Globbing for mput is done as in
      csh(1). For
      mdelete, mget, and
      mreget, 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
      ‘mls remote-files -’. Note:
      mget, mput and
      mreget are not meant to transfer entire directory
      subtrees of files. That can be done by transferring a
      tar(1) archive of the subtree
      (in binary mode).hash
    [size]hash disables
    progress.help
    [command]ftp prints a list of the known commands.idle
    [seconds]imagebinary.lcd
    [directory]less
    filepage.lpage
    local-fileset pager option.lpwdls
    [remote-path [local-file]]dir.macdef
    macro-nameopen command), and remain defined until a
      close command is executed. To invoke a macro, use
      the $ command (see above).
    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 ‘$’
        followed by an ‘i’ signals the
        macro processor that the executing macro is to be looped. On the first
        pass ‘$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 ‘$’.
mdelete
    [remote-files]mdir
    remote-files local-filedir, except multiple remote files may be
      specified. If interactive prompting is on, ftp
      will prompt the user to verify that the last argument is indeed the target
      local file for receiving mdir output.mget
    remote-filesget for each file name thus produced. See
      glob for details on the filename expansion.
      Resulting file names will then be 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-namemls
    remote-files local-filels, except multiple remote files may be
      specified, and the local-file must be specified. If
      interactive prompting is on, ftp will prompt the
      user to verify that the last argument is indeed the target local file for
      receiving mls output.mlsd
    [remote-path]MLSD. The format of display can be changed
      with ‘remopts mlst ...’.mlst
    [remote-path]MLST. The format of display can be changed
      with ‘remopts mlst ...’.mode
    mode-namemode to
      mode-name. The default (and only supported) mode is
      “stream”.modtime
    remote-fileRFC 2822 format.more
    filepage.mput
    local-filesput for each file in the resulting list. See
      glob for details of filename expansion. Resulting
      file names will then be processed according to
      ntrans and nmap
    settings.mreget
    remote-filesmget, but performs a
      reget instead of get.msend
    local-filesmput.newer
    remote-file [local-file]newer. Otherwise, this command is identical to
      get.nlist
    [remote-path [local-file]]ls.nmap
    [inpattern outpattern]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 remote computer
      with different file naming conventions or practices. The mapping follows
      the pattern set by inpattern and
      outpattern.
    inpattern is a template for incoming
        filenames (which may have already been processed according to the
        ntrans and case
        settings). Variable templating 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’. Spaces may be
        included in outpattern, as in the example:
nmap $1 sed s/ *$// >
      $1Use the ‘\’ character to
        prevent special treatment of the
        ‘$’,
        ‘[’,
        ‘]’, and
        ‘,’ characters.
ntrans
    [inchars [outchars]]mput commands and
      put commands issued without a specified remote
      target filename. If arguments are specified, characters in local filenames
      are translated during mget commands and
      get commands issued without a specified local
      target filename. This command is useful when connecting to a
      non-UNIX remote computer
      with different file naming conventions or practices. Characters 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.open
    host [port]ftp will attempt to contact an FTP server at that
      port. If the set auto-login option is on
      (default), ftp will also attempt to automatically
      log the user in to the FTP server (see below).page
    filefile and display with the program
      specified by the set pager option.passive
    [auto]auto is given, act as if
      FTPMODE is set to ‘auto’. If passive
      mode is turned on (default), ftp will send a
      PASV command for all data connections instead of a
      PORT command. The PASV
      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 PORT 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 ftp through a
      gateway router or host that controls the directionality of traffic. (Note
      that though FTP servers are required to support the
      PASV command by RFC 1123,
      some do not.)pdir
    [remote-path]dir [remote-path],
      and display the result with the program specified by the
      set pager option.pls
    [remote-path]ls [remote-path],
      and display the result with the program specified by the
      set pager option.pmlsd
    [remote-path]mlsd [remote-path],
      and display the result with the program specified by the
      set pager option.preserveprogress-’ or a command that starts with
      ‘|’. Refer to
      FILE NAMING CONVENTIONS
      for more information. Enabling progress disables
      hash.promptmget or mput will transfer
      all files, and any mdelete will delete all files.
    When prompting is on, the following commands are available at a prompt:
anpqy?Any other response will answer ‘yes’ to the current file.
proxy
    ftp-commandproxy
      command should be an open, 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 proxy:
      open will not define new macros during the
      auto-login process, close will 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, mput, and
      append 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 PASV command by the server on the
      secondary control connection.put
    local-file [remote-file]ntrans
      or nmap settings in naming the remote file. File
      transfer uses the current settings for type,
      format, mode, and
      structure.pwdquitbye.quote
    [arg ...]rate
    direction [maximum
    [increment]]direction may be one of:
maximum can be modified on the fly by increment bytes (default: 1024) each time a given signal is received:
If maximum is not supplied, the current throttle rates are displayed.
Note: rate is not yet implemented for
        ascii mode transfers.
rcvbuf
    sizerecv
    remote-file [local-file]get.reget
    remote-file [local-file]reget
      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 continued from the
      apparent point of failure. This command is useful when transferring very
      large files over networks that are prone to dropping connections.remopts
    command [command-options]MLST (used for
      MLSD and MLST).rename
    [from [to]]resetrestart
    markerget or
      put at the indicated marker.
      On UNIX systems, marker is usually a byte offset
      into the file.rhelp
    [command-name]rmdir
    directory-namerstatus
    [remote-file]runiqueget 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 will
      be reported. Note that runique will not affect
      local files generated from a shell command (see below). The default value
      is off.send
    local-file [remote-file]put.sendportPORT commands. By default,
      ftp will attempt to use a
      PORT command when establishing a connection for
      each data transfer. The use of PORT commands can
      prevent delays when performing multiple file transfers. If the
      PORT command fails, ftp
      will use the default data port. When the use of
      PORT commands is disabled, no attempt will be made
      to use PORT commands for each data transfer. This
      is useful for certain FTP implementations which do ignore
      PORT commands but, incorrectly, indicate they've
      been accepted.set
    [option value]anonpass$FTPANONPASSftp_proxy$ftp_proxy.http_proxy$http_proxy.https_proxy$https_proxy.no_proxy$no_proxy.pager$PAGER.prompt$FTPPROMPT.rprompt$FTPRPROMPT.site
    [arg ...]SITE command.size
    remote-filesndbuf
    sizestatusftp.struct
    struct-namesuniqueSTOU
      command for successful completion. The remote server will report unique
      name. Default value is off.systemtenexthrottlerate.tracetype
    [type-name]type to
      type-name. If no type is specified, the current type
      is printed. The default type is network ASCII.umask
    [newmask]unset
    optionset
      for more information.usage
    commanduser
    user-name [password
    [account]]ftp will prompt the user for it (after
      disabling local echo). If an account field is not
      specified, and the FTP server requires it, the user will be prompted for
      it. If an account 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
      ftp is invoked with “auto-login”
      disabled, this process is done automatically on initial connection to the
      FTP server.verbosexferbuf
    size?
    [command]help.Command arguments which have embedded spaces may be quoted with
    quote ‘"’ marks.
Commands which toggle settings can take an explicit
    on or off argument to force
    the setting appropriately.
Commands which take a byte count as an argument (e.g.,
    hash, rate, and
    xferbuf) support an optional suffix on the argument
    which changes the interpretation of the argument. Supported suffixes
  are:
If ftp receives a
    SIGINFO (see the status
    argument of stty(1)) or
    SIGQUIT signal whilst a transfer is in progress, the
    current transfer rate statistics will be written to the standard error
    output, in the same format as the standard completion message.
ftp
  supports an auto-fetch feature. To enable auto-fetch, simply pass the list of
  hostnames/files on the command line.
The following formats are valid syntax for an auto-fetch element:
@]host:[path][/]If path contains a glob character and
        globbing is enabled, (see glob), then the
        equivalent of ‘mget path’ is
        performed.
If the directory component of path
        contains no globbing characters, it is stored locally with the name
        basename (see
        basename(1)) of
        path, in the current directory. Otherwise, the
        full remote name is used as the local name, relative to the local root
        directory.
ftp://[user[:password]@]host[:port]/path[/][;type=type]set
      ftp_proxy isn't defined. Otherwise, transfer the URL using HTTP via
      the proxy defined in set ftp_proxy. If
      set ftp_proxy isn't defined and
      user is given, login as user.
      In this case, use password if supplied, otherwise
      prompt the user for one.
    If a suffix of ‘;type=A’
        or ‘;type=I’ is supplied, then the
        transfer type will take place as ascii or binary (respectively). The
        default transfer type is binary.
In order to be compliant with RFC
        3986, ftp interprets the
        path part of an
        ‘ftp://’ auto-fetch URL as
        follows:
/’ immediately after the
          host[:port]
          is interpreted as a separator before the path,
          and not as part of the path itself./’-separated list of name
          components. For all but the last such component,
          ftp performs the equivalent of a
          cd command. For the last path component,
          ftp performs the equivalent of a
          get command.//’ within the
          path, or from an extra
          ‘/’ at the beginning of the
          path, will cause the equivalent of a
          cd command without a directory name. This is
          unlikely to be useful.%XX’
          codes (per RFC 3986) within the path
          components are decoded, with XX representing a
          character code in hexadecimal. This decoding takes place after the
          path has been split into components, but before
          each component is used in the equivalent of a
          cd or get command.
          Some often-used codes are ‘%2F’
          (which represents ‘/’) and
          ‘%7E’ (which represents
          ‘~’).The above interpretation has the following consequences:
%2F’. If a user's home
          directory is required (and the remote server supports the syntax), use
          a leading path of
          ‘%7Euser/’.
          For example, to retrieve /etc/motd from
          ‘localhost’ as the user
          ‘myname’ with the password
          ‘mypass’, use
          ‘ftp://myname:mypass@localhost/%2fetc/motd’cd and get
          commands can be controlled by careful choice of where to use
          ‘/’ and where to use
          ‘%2F’ (or
          ‘%2f’). For example, the
          following URLs correspond to the equivalents of the indicated
          commands:
        cd command.http://[user[:password]@]host[:port]/pathset
      http_proxy is defined, it is used as a URL to an HTTP proxy server.
      If HTTP authorization is required to retrieve path,
      and user (and optionally
      password) is in the URL, use them for the first
      attempt to authenticate.https://[user[:password]@]host[:port]/pathset
      https_proxy is defined, it is used as a URL to an HTTPS proxy
      server. If HTTPS authorization is required to retrieve
      path, and user (and optionally
      password) is in the URL, use them for the first
      attempt to authenticate. There is currently no certificate validation and
      verification.file:///pathabout:topicabout:ftpftp.about:versionftp. Useful to provide when
          reporting problems.Unless noted otherwise above, and -o
    output is not given, the file is stored in the current
    directory as the basename(1)
    of path. Note that if a HTTP redirect is received, the
    fetch is retried using the new target URL supplied by the server, with a
    corresponding new path. Using an explicit
    -o output is recommended, to
    avoid writing to unexpected file names.
If a classic format or an FTP URL format has a trailing
    ‘/’ or an empty
    path component, then ftp will
    connect to the site and cd to the directory given as
    the path, and leave the user in interactive mode ready for further input.
    This will not work if set ftp_proxy is being
  used.
Direct HTTP transfers use HTTP 1.1. Proxied FTP and HTTP transfers use HTTP 1.0.
If -R is given, all auto-fetches that
    don't go via the FTP or HTTP proxies will be restarted. For FTP, this is
    implemented by using reget instead of
    get. For HTTP, this is implemented by using the
    ‘Range: bytes=’ HTTP/1.1 directive.
If WWW or proxy WWW authentication is required, you will be prompted to enter a username and password to authenticate with.
When specifying IPv6 numeric addresses in a URL, you need to
    surround the address in square brackets. E.g.:
    ‘ftp://[::1]:21/’. This is because
    colons are used in IPv6 numeric address as well as being the separator for
    the port number.
ABOR 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
  ABOR processing. If the remote server does not support
  the ABOR command, the prompt will not appear until the
  remote server has completed sending the requested file.
If the terminal interrupt key sequence is used whilst
    ftp is awaiting a reply from the remote server for
    the ABOR processing, then the connection will be
    closed. This is different from the traditional behaviour (which ignores the
    terminal interrupt during this phase), but is considered more useful.
ftp commands are
  processed according to the following rules.
-’ is specified,
      the stdin (for reading) or
      stdout (for writing) is used.|’, the remainder of the argument
      is interpreted as a shell command. ftp then forks
      a shell, using popen(3) with
      the argument supplied, and reads (writes) from the stdout (stdin). If the
      shell command includes spaces, the argument must be quoted; e.g.
      ‘"| ls -lt"’.
      A particularly useful example of this mechanism is:
      ‘dir "" |more’.glob command. If the ftp
      command expects a single local file (e.g. put),
      only the first filename generated by the globbing operation is used.mget commands and get
      commands with unspecified local file names, the local filename is the
      remote filename, which may be altered by a case,
      ntrans, or nmap setting.
      The resulting filename may then be altered if
      runique is on.mput commands and put
      commands with unspecified remote file names, the remote filename is the
      local filename, which may be altered by a ntrans
      or nmap setting. The resulting filename may then
      be altered by the remote server if sunique is
    on.type may be one of
  “ascii”, “image” (binary), “ebcdic”,
  and “local byte size” (for PDP-10's and PDP-20's mostly).
  ftp supports the ascii and image types of file
  transfer, plus local byte size 8 for tenex mode
  transfers.
ftp supports only the default values for
    the remaining file transfer parameters: mode,
    form, and struct.
-N
  netrc option, or specified in the
  NETRC environment variable. The following tokens are
  recognized; they may be separated by spaces, tabs, or new-lines:
machine
    namemachine token that matches the remote machine
      specified on the ftp command line or as an
      open command argument. Once a match is made, the
      subsequent .netrc tokens are processed, stopping
      when the end of file is reached or another machine
      or a default token is encountered.defaultmachine
      name except that default
      matches any name. There can be only one default
      token, and it must be after all machine tokens.
      This is normally used as:
    
    default login anonymous password
      user@sitethereby giving the user an automatic anonymous FTP login to
        machines not specified in .netrc. This can be
        overridden by using the -n flag to disable
        auto-login.
login
    namepassword
    stringftp will abort
      the auto-login process if the .netrc is readable
      by anyone besides the user.account
    stringACCT command if it does not.macdef
    nameftp
      macdef command functions. A macro is defined with
      the specified name; its contents begin with the next
      .netrc line and continue until a blank line
      (consecutive new-line characters) is encountered. Like the other tokens in
      the .netrc file, a macdef
      is applicable only to the machine definition
      preceding it. A macdef entry cannot be used by
      multiple machine definitions; rather, it must be
      defined following each machine it is intended to
      be used with. If a macro named init is defined, it
      is automatically executed as the last step in the auto-login process. For
      example,
    
default
macdef init
epsv4 off
    
    followed by a blank line.
ftp supports interactive command line editing, via the
  editline(3) library. It is
  enabled with the edit command, and is enabled by
  default if input is from a tty. Previous lines can be recalled and edited with
  the arrow keys, and other GNU Emacs-style editing keys may be used as well.
The editline(3) library is configured with a .editrc file — refer to editrc(5) for more information.
An extra key binding is available to ftp
    to provide context sensitive command and filename completion (including
    remote file completion). To use this, bind a key to the
    editline(3) command
    ftp-complete. By default, this is bound to the TAB
    key.
ftp displays a command line prompt of
  ‘ftp> ’ to the user. This can
  be changed with the set prompt command.
A prompt can be displayed on the right side of the screen (after
    the command input) with the set rprompt command.
The following formatting sequences are replaced by the given information:
%/%c[[0]n],
    %.[[0]n]0’, the number of skipped
      components precede the trailing component(s) in the format
      “/<number>trailing”
      (for ‘%c’) or
      “...trailing”
      (for ‘%.’).%M%m.’.%n%%%’.ftp uses the following environment variables.
FTPANONPASS`whoami`@”.FTPMODEFTPPROMPTftp> ’. Refer to
      COMMAND LINE PROMPT for more
      information.FTPRPROMPTFTPSERVERgate is
      enabled.FTPSERVERPORTgate is enabled. Default is port returned by a
      getservbyname(3)
      lookup of “ftpgate/tcp”.FTPUSERAGENTHOMENETRCNO_CERT_VERIFYPAGERSHELLftp_proxySee http_proxy for further notes about
        proxy use.
http_proxyIf “unsafe” URL characters are required in the
        username or password (for example
        ‘@’ or
        ‘/’), encode them with
        RFC 3986
        ‘%XX’
        encoding.
Note that the use of a username and password in
        ftp_proxy and http_proxy
        may be incompatible with other programs that use it (such as
        lynx(1)).
NOTE: this is not used for interactive sessions, only for command-line fetches.
https_proxySee http_proxy for further notes about
        proxy use.
no_proxy:port’, which
      restricts the matching to connections to that port.ftp to use
  extended passive mode. If you find that even a simple
  ls appears to hang after printing a message such as
  this:
229 Entering Extended Passive Mode
  (|||58551|)then you will need to disable extended passive mode with
    epsv4 off. See the above section
    The .netrc File for an example of
    how to make this automatic.
ftp attempts to be compliant with:
RFC
    959RFC
    1123RFC
    1635RFC
    2389RFC
    2428RFC
    2616RFC
    2822RFC
    3659RFC
    3986ftp command appeared in
  4.2BSD.
Various features such as command line editing, context sensitive
    command and file completion, dynamic progress bar, automatic fetching of
    files and URLs, modification time preservation, transfer rate throttling,
    configurable command line prompt, and other enhancements over the standard
    BSD ftp were implemented in
    NetBSD 1.3 and later releases by
    Luke Mewburn ⟨lukem@NetBSD.org⟩.
IPv6 support was added by the WIDE/KAME project (but may not be present in all non-NetBSD versions of this program, depending if the operating system supports IPv6 in a similar manner to KAME).
An error in the treatment of carriage returns in the 4.2BSD ascii-mode transfer code has been corrected. This correction may result in incorrect transfers of binary files to and from 4.2BSD servers using the ascii type. Avoid this problem by using the binary image type.
ftp assumes that all IPv4 mapped addresses
    (IPv6 addresses with a form like ::ffff:10.1.1.1)
    indicate IPv4 destinations which can be handled by
    AF_INET sockets. However, in certain IPv6 network
    configurations, this assumption is not true. In such an environment, IPv4
    mapped addresses must be passed to AF_INET6 sockets
    directly. For example, if your site uses a SIIT translator for IPv6-to-IPv4
    translation, ftp is unable to support your
    configuration.
| August 29, 2022 | NetBSD 9.4 |