1 LYNX NAME lynx - a general purpose distributed information browser for the World Wide Web 2 SYNOPSIS Lynx [options] [path or URL] use "lynx -help" to display a complete list of current options. 2 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 con- taining 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 and VMS. 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. 2 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 URL's." -anonymous used to specify the anonymous account. -case enable case-sensitive string searching. -cache=NUMBER set the NUMBER of documents cached in memory. The default is 10. -cfg=FILENAME specifies a Lynx configuration file other than the default lynx.cfg. -display=DISPLAY set the display variable for X rexeced programs. -dump dumps the formatted output of the default document or one specified on the command line to standard out. Under UNIX this can be used in the following way: lynx -dump http://info.cern.ch/default.html. -editor=EDITOR enable edit mode using the specified EDITOR. (vi, ed, emacs, etc.) -emacskeys enable emacs-like key movement. -fileversions include all versions of files in local VMS directory listings. -force_html forces the first document to be interpreted as HTML. -ftp disable ftp access. -help print this Lynx command syntax usage message. -homepage=URL set homepage separate from start page. -index=URL set the default index file to the specified URL. -localhost disable URLs that point to remote hosts. -nobrowse disable directory browsing. -noprint disable print functions. -nostatus disable the retrieval status messages. -print enable print functions. (default) -restrictions=[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. 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. disk_save - disallow saving binary files to disk in the download menu. 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 to go to file: URL's. 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 our 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. mail - disable mailing feature. news_post - disable 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 G)oto's. suspend - disallow Unix Control-Z suspends with escape to shell. -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, and the default configuration can be changed in userdefs.h. -source works the same as dump but outputs HTML source instead of formatted text. -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.) -trace turns on WWW trace mode. -version print version information -vikeys enable vi-like key movement. 2 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. 2 NOTES This is the Lynx 2.3-FM Release for UN*X/VMS If you wish to contribute to the further development of Lynx, subscribe to our mailing list. Send email to with "subscribe lynx-dev " as the only line in the body of your message. Send bug reports, comments, suggestions to . Send general help requests to . 2 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 UN*X 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 UN*X 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 to everyone on the net who has contributed to Lynx's development either directly (through comments or bug reports) or indirectly (through inspiration and development of other systems). 2 AUTHORS Michael Grobe, Charles Rezac, Lou Montulli Academic Computing Services University of Kansas Lawrence, Kansas 66047