TIP(1C) TIP(1C) NAME tip, cu - connect to a remote system SYNOPSIS tip [ -v ] [ -_s_p_e_e_d ] system-name tip [ -v ] [ -_s_p_e_e_d ] phone-number cu phone-number [ -t ] [ -s _s_p_e_e_d ] [ -a _a_c_u ] [ -l _l_i_n_e ] [ -# ] DESCRIPTION _T_i_p and _c_u establish a full-duplex connection to another machine, giv‐ ing the appearance of being logged in directly on the remote cpu. It goes without saying that you must have a login on the machine (or equivalent) to which you wish to connect. The preferred interface is _t_i_p. The _c_u interface is included for those people attached to the ‘‘call UNIX’’ command of version 7. This manual page describes only _t_i_p. Typed characters are normally transmitted directly to the remote machine (which does the echoing as well). A tilde (‘~’) appearing as the first character of a line is an escape signal; the following are recognized: ~^D ~. Drop the connection and exit (you may still be logged in on the remote machine). ~c [_n_a_m_e] Change directory to name (no argument implies change to your home directory). ~! Escape to a shell (exiting the shell will return you to tip). ~> Copy file from local to remote. _T_i_p prompts for the name of a local file to transmit. ~< Copy file from remote to local. _T_i_p prompts first for the name of the file to be sent, then for a command to be exe‐ cuted on the remote machine. ~p _f_r_o_m [ _t_o ] Send a file to a remote UNIX host. The put command causes the remote UNIX system to run the command string ‘‘cat > ’to’’’, while _t_i_p sends it the ‘‘from’’ file. If the ‘‘to’’ file isn’t specified the ‘‘from’’ file name is used. This command is actually a UNIX specific version of the ‘‘~>’’ command. ~t _f_r_o_m [ _t_o ] Take a file from a remote UNIX host. As in the put command the ‘‘to’’ file defaults to the ‘‘from’’ file name if it isn’t specified. The remote host executes the command string ‘‘cat ’from’;echo ^A’’ to send the file to _t_i_p. ~| Pipe the output from a remote command to a local UNIX pro‐ cess. The command string sent to the local UNIX system is processed by the shell. ~$ Pipe the output from a local UNIX process to the remote host. The command string sent to the local UNIX system is processed by the shell. ~# Send a BREAK to the remote system. For systems which don’t support the necessary _i_o_c_t_l call the break is simulated by a sequence of line speed changes and DEL characters. ~s Set a variable (see the discussion below). ~^Z Stop _t_i_p (only available with job control). ~^Y Stop only the ‘‘local side’’ of _t_i_p (only available with job control); the ‘‘remote side’’ of _t_i_p, the side that displays output from the remote host, is left running. ~? Get a summary of the tilde escapes _T_i_p uses the file /etc/remote to find how to reach a particular system and to find out how it should operate while talking to the system; refer to _r_e_m_o_t_e(5) for a full description. Each system has a default baud rate with which to establish a connection. If this value is not suitable, the baud rate to be used may be specified on the command line, e.g. ‘‘tip -300 mds’’. When _t_i_p establishes a connection it sends out a connection message to the remote system; the default value, if any, is defined in /etc/remote. When _t_i_p prompts for an argument (e.g. during setup of a file transfer) the line typed may be edited with the standard erase and kill charac‐ ters. A null line in response to a prompt, or an interrupt, will abort the dialogue and return you to the remote machine. _T_i_p guards against multiple users connecting to a remote system by opening modems and terminal lines with exclusive access, and by honor‐ ing the locking protocol used by _u_u_c_p(1C). During file transfers _t_i_p provides a running count of the number of lines transferred. When using the ~> and ~< commands, the ‘‘eofread’’ and ‘‘eofwrite’’ variables are used to recognize end-of-file when read‐ ing, and specify end-of-file when writing (see below). File transfers normally depend on tandem mode for flow control. If the remote system does not support tandem mode, ‘‘echocheck’’ may be set to indicate _t_i_p should synchronize with the remote system on the echo of each transmit‐ ted character. When _t_i_p must dial a phone number to connect to a system it will print various messages indicating its actions. _T_i_p supports the DEC DN-11 and Racal-Vadic 831 auto-call-units; the DEC DF02 and DF03, Ventel 212+, Racal-Vadic 3451, and Bizcomp 1031 and 1032 integral call unit/modems. VARIABLES _T_i_p maintains a set of _v_a_r_i_a_b_l_e_s which control its operation. Some of these variable are read-only to normal users (root is allowed to change anything of interest). Variables may be displayed and set through the ‘‘s’’ escape. The syntax for variables is patterned after _v_i(1) and _M_a_i_l(1). Supplying ‘‘all’’ as an argument to the set command displays all variables readable by the user. Alternatively, the user may request display of a particular variable by attaching a ‘?’ to the end. For example ‘‘escape?’’ displays the current escape character. Variables are numeric, string, character, or boolean values. Boolean variables are set merely by specifying their name; they may be reset by prepending a ‘!’ to the name. Other variable types are set by concate‐ nating an ‘=’ and the value. The entire assignment must not have any blanks in it. A single set command may be used to interrogate as well as set a number of variables. Variables may be initialized at run time by placing set commands (without the ‘‘~s’’ prefix in a file _._t_i_p_r_c in one’s home directory). The -v option causes _t_i_p to display the sets as they are made. Certain common variables have abbreviations. The fol‐ lowing is a list of common variables, their abbreviations, and their default values. beautify (bool) Discard unprintable characters when a session is being scripted; abbreviated _b_e. baudrate (num) The baud rate at which the connection was established; abbreviated _b_a. dialtimeout (num) When dialing a phone number, the time (in seconds) to wait for a connection to be established; abbreviated _d_i_a_l. echocheck (bool) Synchronize with the remote host during file transfer by waiting for the echo of the last character transmitted; default is _o_f_f. eofread (str) The set of characters which signify and end-of-tranmission during a ~< file transfer command; abbreviated _e_o_f_r. eofwrite (str) The string sent to indicate end-of-transmission during a ~> file transfer command; abbreviated _e_o_f_w. eol (str) The set of characters which indicate an end-of-line. _T_i_p will recognize escape characters only after an end-of-line. escape (char) The command prefix (escape) character; abbreviated _e_s; default value is ‘~’. exceptions (str) The set of characters which should not be discarded due to the beautification switch; abbreviated _e_x; default value is ‘‘\t\n\f\b’’. force (char) The character used to force literal data transmission; abbreviated _f_o; default value is ‘^P’. framesize (num) The amount of data (in bytes) to buffer between file sys‐ tem writes when receiving files; abbreviated _f_r. host (str) The name of the host to which you are connected; abbrevi‐ ated _h_o. prompt (char) The character which indicates and end-of-line on the remote host; abbreviated _p_r; default value is ‘\n’. This value is used to synchronize during data transfers. The count of lines transferred during a file transfer command is based on recipt of this character. raise (bool) Upper case mapping mode; abbreviated _r_a; default value is _o_f_f. When this mode is enabled, all lower case letters will be mapped to upper case by _t_i_p for transmission to the remote machine. raisechar (char) The input character used to toggle upper case mapping mode; abbreviated _r_c; default value is ‘^A’. record (str) The name of the file in which a session script is recorded; abbreviated _r_e_c; default value is ‘‘tip.record’’. script (bool) Session scripting mode; abbreviated _s_c; default is _o_f_f. When _s_c_r_i_p_t is _t_r_u_e, _t_i_p will record everything transmitted by the remote machine in the script record file specified in _r_e_c_o_r_d. If the _b_e_a_u_t_i_f_y switch is on, only printable ASCII characters will be included in the script file (those characters betwee 040 and 0177). The variable _e_x_c_e_p_t_i_o_n_s is used to indi‐ cate characters which are an exception to the normal beautifica‐ tion rules. tabexpand (bool) Expand tabs to spaces during file transfers; abbreviated _t_a_b; default value is _f_a_l_s_e. Each tab is expanded to 8 spaces. verbose (bool) Verbose mode; abbreviated _v_e_r_b; default is _t_r_u_e. When verbose mode is enabled, _t_i_p prints messages while dialing, shows the current number of lines transferred during a file transfer operations, and more. SHELL (str) The name of the shell to use for the ~! command; default value is ‘‘/bin/sh’’, or taken from the environment. HOME (str) The home directory to use for the ~c command; default value is taken from the environment. FILES /etc/remote global system descriptions /etc/phones global phone number data base ${REMOTE} private system descriptions ${PHONES} private phone numbers ~/.tiprc initialization file. /usr/spool/uucp/LCK..* lock file to avoid conflicts with _u_u_c_p DIAGNOSTICS Diagnostics are, hopefully, self explanatory. SEE ALSO remote(5), phones(5) BUGS The full set of variables is undocumented and should, probably, be paired down. 4th Berkeley Distribution May 5, 1986 TIP(1C)