LYNX(1)

NAME
lynx - a general purpose distributed information browser for the World Wide Web

SYNOPSIS
Lynx [options] [path or URL]

use "lynx -help" to display a complete list of current options.

DESCRIPTION
Lynx is a fully-featured World Wide Web (WWW) client for users running cursor-addressable, character-cell display devices (e.g., vt100 terminals, vt100 emulators running on PCs or Macs, or any other "curses-oriented" display). It will display hypertext markup language (HTML) documents containing links to files residing on the local system, as well as files residing on remote systems running Gopher, HTTP, FTP, WAIS, and NNTP servers. Current versions of Lynx run on Unix, VMS, Windows95/NT, 386DOS and OS/2 EMX.

Lynx can be used to access information on the World Wide Web, or to build information systems intended primarily for local access. For example, Lynx has been used to build several Campus Wide Information Systems (CWIS). In addition, Lynx can be used to build systems isolated within a single LAN.

OPTIONS
At start up, Lynx will load any local file or remote URL specified at the command line. For help with URLs, press "?" or "h" while running Lynx. Then follow the link titled, "Help on URLs."

-   If the argument is only '-', then Lynx expects to receive the arguments from stdin. This is to allow for the potentially very long command line that can be associated with the -get_data or -post_data arguments (see below).

-anonymous
    used to specify the anonymous account.

-assume_charset=ID:MIMEname
    charset for documents that don't specify it.

-assume_local_charset=ID:MIMEname
    charset assumed for local files.

-assume_unrec_charset=ID:MIMEname
    use this instead of unrecognized charsets.

-auth=ID:PASSWD
    set authorization ID and password for protected documents at startup. Be sure to protect any script files which use this switch.

-base
    prepend a request URL comment and BASE tag to text/html outputs for -source dumps.

-blink
    forces high intensity bg colors for color mode, if available and supported by the terminal. Lynx needs to be compiled with the slang library for this flag.

-book
    use the bookmark page as the startfile. The default or command line startfile is still set for the Main screen command, and will be used if the bookmark page is unavailable or blank.

-buried_news
    toggles scanning of news articles for buried references, and converts them to news links. Not recommended because email addresses enclosed in angle brackets will be converted to false news links, and uuencoded messages can be trashed.

-cache=NUMBER
    set the NUMBER of documents cached in memory. The default is 10.

-case
    enable case-sensitive string searching.

-cfg=FILENAME
    specifies a Lynx configuration file other than the default lynx.cfg.

-child
    exit on left-arrow in startfile, and disable save to disk.

-color
    forces color mode on, if available. Default color control sequences which work for many terminal types are assumed if the terminal capability description does not specify how to handle color. Lynx needs to be compiled with the slang library for this flag. A saved show_color=always setting found in a .lynxrc file at startup has the same effect. A saved show_color=always found in .lynxrc on startup is overridden by this flag.

-cookies
    toggles handling of Set-Cookie headers.

-core
    toggles forced core dumps on fatal errors.

-crawl
    with -traversal, output each page to a file. with -dump, format output as with -traversal, but to stdout.

-display=DISPLAY
    set the display variable for X rexec-ed programs.

-dump
    dumps the formatted output of the default document or one specified on the command line to standard out. This can be used in the following way: lynx -dump http://www.crl.com/~subir/lynx.html.

-editor=EDITOR
    enable edit mode using the specified EDITOR. (vi, ed, emacs, etc.)

-emacskeys
    enable emacs-like key movement.

-enable_scrollback
    toggles compatibility with comm programs' scrollback keys (may be incompatible with some curses packages).

-error_file=FILE
    define a file where Lynx will report HTTP access codes.

-fileversions
    include all versions of files in local VMS directory listings.

-force_html
    forces the first document to be interpreted as HTML.

-force_secure
    toggles forcing of the secure flag for SSL cookies.

-from
    toggles transmissions of From headers.

-ftp
    disable ftp access.

-get_data
    send form data from stdin using GET method and dump results.

-head
    send a HEAD request for the mime headers.

-help
    print this Lynx command syntax usage message.

-hiddenlinks=[option]
    control the display of hidden links. merge hidden links show up as bracketed numbers and are numbered together with other links in the sequence of their occurrence in the document. listonly hidden links are shown only on L)ist screens and listings generated by -dump or from the P)rint menu, but appear separately at the end of those lists. This is the default behavior. ignore hidden links do not appear even in listings.

-historical
    toggles use of '>' or '-->' as a terminator for comments.

-homepage=URL
    set homepage separate from start page.

-image_links
    toggles inclusion of links for all images.

-index=URL
    set the default index file to the specified URL.

-ismap
    toggles inclusion of ISMAP links when client-side MAPs are present.

-link=NUMBER
    starting count for lnk#.dat files produced by -crawl.

-localhost
    disable URLs that point to remote hosts.

-locexec
    enable local program execution from local files only (if Lynx was compiled with local execution enabled).

-mime_header
    prints the MIME header of a fetched document along with its source.

-minimal
    toggles minimal versus valid comment parsing.

-newschunksize=NUMBER
    number of articles in chunked news listings.

-newsmaxchunk=NUMBER
    maximum news articles in listings before chunking.

-nobrowse
    disable directory browsing.

-nocc
    disable Cc: prompts for self copies of mailings. Note that this does not disable any CCs which are incorporated within a mailto URL or form ACTION.

-nocolor
    force color mode off, overriding terminal capabilities and any -color flags, COLORTERM variable, and saved .lynxrc settings.

-noexec
    disable local program execution. (DEFAULT)

-nofilereferer
    disable transmissions of Referer headers for file URLs.

-nolist
    disable the link list feature in dumps.

-nolog
    disable mailing of error messages to document owners.

-nopause
    disable forced pauses for statusline messages.

-noprint
    disable print functions.

-noredir
    prevents automatic redirection and prints a message with a link to the new URL.

-noreferer
    disable transmissions of Referer headers.

-nosocks
    disable SOCKS proxy usage by a SOCKSified Lynx.

-nostatus
    disable the retrieval status messages.

-number_links
    force numbering of links.

-pauth=ID:PASSWD
    set authorization ID and password for a protected proxy server at startup. Be sure to protect any script files which use this switch.

-popup
    toggles handling of single-choice SELECT options via popup windows or as lists of radio buttons.

-post_data
    send form data from stdin using POST method and dump results.

-preparsed
    show HTML source preparsed and reformatted when used with -source or in source view.

-print
    enable print functions. (default)

-pseudo_inlines
    toggles pseudo-ALTs for inlines with no ALT string.

-raw
    toggles default setting of 8-bit character translations or CJK mode for the startup character set.

-realm
    restricts access to URLs in the starting realm.

-reload
    flushes the cache on a proxy server (only the first document affected).

-restrictions=[option][,option][,option]...
    allows a list of services to be disabled selectively. The following list is printed if no options are specified. all - restricts all options. bookmark - disallow changing the location of the bookmark file. bookmark_exec - disallow execution links via the bookmark file. change_exec_perms - disallow changing the eXecute permission on files (but still allow it for directories) when local file management is enabled. default - same as command line option -anonymous. Disables default services for anonymous users. Currently set to all restricted except for: inside_telnet, outside_telnet, inside_news, inside_ftp, outside_ftp, inside_rlogin, outside_rlogin, jump, mail and goto. Defaults are setable within userdefs.h. dired_support - disallow local file management. disk_save - disallow saving to disk in the download and print menus. download - disallow downloaders in the download menu. editor - disallow editing. exec - disable execution scripts. exec_frozen - disallow the user from changing the local execution option. file_url - disallow using G)oto, served links or bookmarks for file: URLs. goto - disable the 'g' (goto) command. inside_ftp - disallow ftps for people coming from inside your domain (utmp required for selectivity). inside_news - disallow USENET news posting for people coming from inside your domain (utmp required for selectivity). inside_rlogin - disallow rlogins for people coming from inside your domain (utmp required for selectivity). inside_telnet - disallow telnets for people coming from inside your domain (utmp required for selectivity). jump - disable the 'j' (jump) command. multibook - disallow multiple bookmarks. mail - disallow mail. news_post - disallow USENET News posting. options_save - disallow saving options in .lynxrc. outside_ftp - disallow ftps for people coming from outside your domain (utmp required for selectivity). outside_news - disallow USENET news posting for people coming from outside your domain (utmp required for selectivity). outside_rlogin - disallow rlogins for people coming from outside your domain (utmp required for selectivity). outside_telnet - disallow telnets for people coming from outside your domain (utmp required for selectivity). print - disallow most print options. shell - disallow shell escapes and lynxexec or lynxprog G)oto's. suspend - disallow Unix Control-Z suspends with escape to shell. telnet_port - disallow specifying a port in telnet G)oto's. useragent - disallow modifications of the User-Agent header.

-resubmit_posts
    toggles forced resubmissions (no-cache) of forms with method POST when the documents they returned are sought with the PREV_DOC command or from the History List.

-rlogin
    disable recognition of rlogin commands.

-selective
    require .www_browsable files to browse directories.

-show_cursor
    If enabled the cursor will not be hidden in the right hand corner but will instead be positioned at the start of the currently selected link. Show cursor is the default for systems without FANCY_CURSES capabilities. The default configuration can be changed in userdefs.h or lynx.cfg. The command line switch toggles the default.

-source
    works the same as dump but outputs HTML source instead of formatted text.

-startfile_ok
    allow non-http startfile and homepage with -validate.

-telnet
    disable recognition of telnet commands.

-term=TERM
    tell Lynx what terminal type to assume its talking to. (This may be useful for remote execution, when, for example, Lynx connects to a remote TCP/IP port that starts a script that, in turn, starts another Lynx process.)

-tlog
    toggles use of a Lynx Trace Log for the current session.

-trace
    turns on WWW trace mode.

-traversal
    traverse all http links derived from startfile. When used with -crawl, each link that begins with the same string as startfile is output to a file, intended for indexing. See CRAWL.announce for more information.

-underscore
    toggles use of _underline_ format in dumps.

-useragent=Name
    set alternate Lynx User-Agent header.

-validate
    accept only http URLs (for validation). Complete security restrictions also are implemented.

-version
    print version information.

-vikeys
    enable vi-like key movement.

-width=NUMBER
    number of columns for formatting of dumps, default is 80.

COMMANDS
o Use Up arrow and Down arrow to scroll through hypertext links.
o Right arrow or Return will follow a highlighted hypertext link.
o Left Arrow will retreat from a link.
o Type "h" or "?" for online help and descriptions of key-stroke commands.
o Type "k" for a complete list of the current key-stroke command mappings.

NOTES
This is the Lynx v2.8 Release

If you wish to contribute to the further development of Lynx, subscribe to our mailing list. Send email to <majordomo@sig.net> with "subscribe lynx-dev" as the only line in the body of your message.

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ACKNOWLEDGMENTS
Lynx has incorporated code from a variety of sources along the way. The earliest versions of Lynx included code from Earl Fogel of Computing Services at the University of Saskatchewan, who implemented HYPERREZ in the Unix environment. HYPERREZ was developed by Niel Larson of Think.com and served as the model for the early versions of Lynx. Those versions also incorporated libraries from the Unix Gopher clients developed at the University of Minnesota, and the later versions of Lynx rely on the WWW client library code developed by Tim Berners-Lee and the WWW community. Also a special thanks to Foteos Macrides who ported much of Lynx to VMS and did or organized most of its development since the departures of Lou Montulli and Garrett Blythe from the University of Kansas in the summer of 1994 through the release of v2.7.2, and to everyone on the net who has contributed to Lynx's development either directly (through patches, comments or bug reports) or indirectly (through inspiration and development of other systems).

AUTHORS
Lou Montulli, Garrett Blythe, Craig Lavender, Michael Grobe, Charles Rezac
Academic Computing Services
University of Kansas
Lawrence, Kansas 66047

Foteos Macrides
Worcester Foundation for Biomedical Research
Shrewsbury, Massachusetts 01545