1c3270(1) General Commands Manual c3270(1)
2
6 c3270 - curses-based IBM host access tool
7
9 c3270 [options] [host]
10
13 c3270 opens a telnet connection to an IBM host in a console window. It
14 implements RFCs 2355 (TN3270E), 1576 (TN3270) and 1646 (LU name selec‐
15 tion), and supports IND$FILE file transfer. If the console is capable
16 of displaying colors, then c3270 emulates an IBM 3279. Otherwise, it
17 emulates a 3278.
18 The full syntax for host is:
20 [prefix:]...[LUname@]hostname[:port]
21 Prepending a P: onto hostname causes the connection to go through the
23 telnet-passthru service rather than directly to the host. See PASSTHRU
24 below.
25 Prepending an S: onto hostname removes the "extended data stream"
27 option reported to the host. See -tn below for further information.
28 Prepending an N: onto hostname turns off TN3270E support for the ses‐
30 sion.
31 Prepending an L: onto hostname causes c3270 to first create an SSL tun‐
33 nel to the host, and then create a TN3270 session inside the tunnel.
34 (This function is supported only if c3270 was built with SSL/TLS sup‐
35 port). Note that TLS-encrypted sessions using the TELNET START-TLS
36 option are negotiated with the host automatically; for these sessions
37 the L: prefix should not be used.
38 A specific LU name to use may be specified by prepending it to the
40 hostname with an `@'. Multiple LU names to try can be separated by
41 commas. An empty LU can be placed in the list with an extra comma.
42 The hostname may optionally be placed inside square-bracket characters
44 `[' and `]'. This will prevent any colon `:' characters in the host‐
45 name from being interpreted as indicating option prefixes or port num‐
46 bers. This allows numeric IPv6 addresses to be used as hostnames.
47 On systems that support the forkpty library call, the hostname may be
49 replaced with -e and a command string. This will cause c3270 to con‐
50 nect to a local child process, such as a shell.
51 The port to connect to defaults to telnet. This can be overridden with
53 the -port option, or by appending a port to the hostname with a colon
54 `:'. (For compatability with previous versions of c3270 and with
55 tn3270(1), the port may also be specified as a second, separate argu‐
56 ment.)
57
59 c3270 understands the following options:
60 -allbold
62 Forces all characters to be displayed in bold. This helps with
63 PC consoles which display non-bold characters in unreadably dim
64 colors.
65 -altscreen rowsxcols=init_string
67 Defines the dimensions and escape sequence for the alternate
68 (132-column) screen mode. See SCREEN SIZE SWITCHING, below.
69 -cbreak
71 Causes c3270 to operate in cbreak mode, instead of raw mode. In
72 cbreak mode, the TTY driver will properly process XOFF and XON
73 characters, which are required by some terminals for proper
74 operation. However, those characters (usually ^S and ^Q), as
75 well as the characters for interrupt, quit, and lnext (usually
76 ^C, ^\ and ^V respectively) will be seen by c3270 only if pre‐
77 ceded by the lnext character. The susp character (usually ^Z)
78 cannot be seen by c3270 at all.
79 -charset name
81 Specifies an EBCDIC host character set. See CHARACTER SETS
82 below.
83 -clear toggle
85 Sets the initial value of toggle to false. The list of toggle
86 names is under TOGGLES below.
87 -defscreen rowsxcols=init_string
89 Defines the dimensions and escape sequence for the default
90 (80-column) screen mode. See SCREEN SIZE SWITCHING, below.
91 -hostsfile file
93 Uses file as the hosts file, which allows aliases for host names
94 and scripts to be executed at login. See ibm_hosts(1) for
95 details.
96 -im method
98 Specifies the name of the input method to use for multi-byte
99 input. (Supported only when c3270 is compiled with DBCS sup‐
100 port.)
101 -keymap name
103 Specifies a keyboard map to be found in the resource
104 c3270.keymap.name or the file name. See KEYMAPS below for
105 details.
106 -km name
108 Specifies the local encoding method for multi-byte text. name
109 is an encoding name recognized by the ICU library. (Supported
110 only when c3270 is compiled with DBCS support, and necessary
111 only when c3270 cannot figure it out from the locale.)
112 -model name
114 The model of 3270 display to be emulated. The model name is in
115 two parts, either of which may be omitted:
116 The first part is the base model, which is either 3278 or 3279.
118 3278 specifies a monochrome 3270 display; 3279 specifies a color
119 3270 display.
120 The second part is the model number, which specifies the number
122 of rows and columns. Model 4 is the default.
123 Model Number Columns Rows
125 ──────────────────────────────
126 2 80 24
127 3 80 30
128 4 80 43
129 5 132 27
130 Note: Technically, there is no such 3270 display as a 3279-4 or
132 3279-5, but most hosts seem to work with them anyway.
133 The default model for a color display is 3279-4. For a
135 monochrome display, it is 3278-4.
136 -mono Forces 3278 emulation.
138 -oversize colsxrows
140 Makes the screen larger than the default for the chosen model
141 number. This option has effect only in combination with
142 extended data stream support (controlled by the "c3270.extended"
143 resource), and only if the host supports the Query Reply
144 structured field. The number of columns multiplied by the
145 number of rows must not exceed 16383 (3fff hex), the limit of
146 14-bit 3270 buffer addressing.
147 -port n
149 Specifies a different TCP port to connect to. n can be a name
150 from /etc/services like telnet, or a number. This option
151 changes the default port number used for all connections. (The
152 positional parameter affects only the initial connection.)
153 -printerlu luname
155 Causes c3270 to automatically start a pr3287 printer session.
156 If luname is ".", then the printer session will be associated
157 with the interactive terminal session (this requires that the
158 host support TN3270E). Otherwise, the value is used as the
159 explicit LU name to associate with the printer session.
160 -secure
162 Disables the interactive c3270> prompt. When used, a hostname
163 must be provided on the command line.
164 -set toggle
166 Sets the initial value of toggle to true. The list of toggle
167 names is under TOGGLES below.
168 -tn name
170 Specifies the terminal name to be transmitted over the telnet
171 connection. The default name is IBM-model_name-E, for example,
172 IBM-3279-4-E for a color display, or IBM-3278-4-E for a
173 monochrome display.
174 Some hosts are confused by the -E suffix on the terminal name,
176 and will ignore the extra screen area on models 3, 4 and 5.
177 Prepending an s: on the hostname, or setting the
178 "c3270.extended" resource to "false", removes the -E from the
179 terminal name when connecting to such hosts.
180 The name can also be specified with the "c3270.termName"
182 resource.
183 -trace Turns on data stream and event tracing at startup. The default
185 trace file name is /tmp/x3trc.process_id.
186 -tracefile file
188 Specifies a file to save data stream and event traces into,
189 overriding the default of /tmp/x3trc.process_id.
190 -tracefilesize size
192 Places a limit on the size of a trace file. If this option is
193 not specified, or is specified as 0 or none, the trace file will
194 be unlimited. If specified, the trace file cannot already
195 exist, and the (silently enforced) minimum size is 64 Kbytes.
196 The value of size can have a K or M suffix, indicating kilobytes
197 or megabytes respectively.
198 -xrm "c3270.resource: value"
200 Sets the value of the named resource to value. Resources
201 control less common c3270 options, and are defined under
202 RESOURCES below.
203
205 The -charset option or the "c3270.charset" resource controls the EBCDIC
206 host character set used by c3270. Available sets include:
207 Charset Name Code Page Display Character
209 Sets
210 ─────────────────────────────────────────────────────
211 apl 37 3270cg-1a
212 belgian 500 3270cg-1a 3270-cg1
213 iso8859-1
214 bracket 37 3270cg-1a 3270-cg1
215 iso8859-1
216 brazilian 275 3270cg-1a 3270-cg1
217 iso8859-1
218 finnish 278 3270cg-1a 3270-cg1
219 iso8859-1
220 french 297 3270cg-1a 3270-cg1
221 iso8859-1
222 german 273 3270cg-1a 3270-cg1
223 iso8859-1
224 icelandic 871 3270cg-1a 3270-cg1
225 iso8859-1
226 iso-hebrew 424 iso8859-8
227 iso-turkish 1026 iso8859-9
228 italian 280 3270cg-1a 3270-cg1
229 iso8859-1
230 japanese 1027+300 jisx0201.1976-0 +
231 jisx0208.1983-0
232 norwegian 277 3270cg-1a 3270-cg1
233 iso8859-1
234 russian 880 koi8-r
235 simplified-chinese 836+837 3270cg-1a iso8859-1
236 + gb2312.1980-0
237 slovenian 870 iso8859-2
238 thai 838 iso8859-11
239 tis620.2529-0
240 uk 285 3270cg-1a 3270-cg1
241 iso8859-1
242 us-intl 37 3270cg-1a 3270-cg1
243 iso8859-1
244 The default character set is bracket, which is useful for common IBM
246 hosts which use EBCDIC codes 0xAD and 0xBD for the `[' and `]'
247 characters, respectively.
248
250 c3270 uses the ibm_hosts database to define aliases for host names, and
251 to specify macros to be executed when a connection is first made. See
252 ibm_hosts(5) for details.
253 You may specify a different ibm_hosts database with the
255 "c3270.hostsFile" resource.
256
258 Some hosts use an ASCII front-end to do initial login negotiation, then
259 later switch to 3270 mode. c3270 will emulate an ANSI X.64 terminal
260 until the host places it in 3270 mode (telnet BINARY and SEND EOR
261 modes, or TN3270E mode negotiation).
262 If the host later negotiates to stop functioning in 3270 mode, c3270
264 will return to ANSI emulation.
265 In NVT mode, c3270 supports both character-at-a-time mode and line mode
267 operation. You may select the mode with a menu option. When in line
268 mode, the special characters and operational characteristics are
269 defined by resources:
270 Mode/Character Resource Default
272 ─────────────────────────────────────────────
273 Translate CR to NL c3270.icrnl true
274 Translate NL to CR c3270.inlcr false
275 Erase previous c3270.erase ^?
278 character
279 Erase entire line c3270.kill ^U
280 Erase previous word c3270.werase ^W
281 Redisplay line c3270.rprnt ^R
282 Ignore special c3270.lnext ^V
283 meaning of next
284 character
285 Interrupt c3270.intr ^C
286 Quit c3270.quit ^\
287 End of file c3270.eof ^D
288 Separate keymaps can be defined for use only when c3270 is in 3270 mode
290 or NVT mode. See KEYMAPS for details.
291
293 c3270 has a number of configurable modes which may be selected by the
294 -set and -clear options.
295 monoCase
297 If set, c3270 operates in uppercase-only mode.
298 blankFill
300 If set, c3270 behaves in some un-3270-like ways. First, when a
301 character is typed into a field, all nulls in the field to the
302 left of that character are changed to blanks. This eliminates a
303 common 3270 data-entry surprise. Second, in insert mode,
304 trailing blanks in a field are treated like nulls, eliminating
305 the annoying `lock-up' that often occurs when inserting into an
306 field with (apparent) space at the end.
307 lineWrap
309 If set, the ANSI terminal emulator automatically assumes a
310 NEWLINE character when it reaches the end of a line.
311 The names of the toggles for use with the -set and -clear options are
313 as follows:
314 Option Name
316 ─────────────────────────────────────
317 Monocase monoCase
318 Blank Fill blankFill
319 Track Cursor cursorPos
320 Trace Data Stream dsTrace
321 Trace Events eventTrace
322 Save Screen(s) in File screenTrace
323 Wraparound lineWrap
324 These names are also used as the first parameter to the Toggle action.
326
328 If the terminal that c3270 is running on has at least one more row that
329 the 3270 model requires (e.g., 25 rows for a model 2), c3270 will
330 display a status line. The c3270 status line contains a variety of
331 information. From left to right, the fields are:
332 comm status
334 Three symbols indicate the state of the connection to the host.
335 If connected, the right-hand symbol is a solid box; if not, it
336 is a question mark.
337 keyboard lock
339 If the keyboard is locked, an "X" symbol and a message field
340 indicate the reason for the keyboard lock.
341 typeahead
343 The letter "T" indicates that one or more keystrokes are in the
344 typeahead buffer.
345 temporary keymap
347 The letter "K" indicates that a temporary keymap is in effect.
348 reverse
350 The letter "R" indicates that the keyboard is in reverse field
351 entry mode.
352 insert mode
354 The letter "I" indicates that the keyboard is in insert mode.
355 printer session
357 The letter "P" indicates that a pr3287 session is active.
358 LU name
360 The LU name associated with the session, if there is one.
361 cursor position
363 The cursor row and column are optionally displayed, separated by
364 a "/".
365
367 Here is a complete list of basic c3270 actions. Script-specific
368 actions are described on the x3270-script(1) manual page.
369 Actions marked with an asterisk (*) may block, sending data to the host
371 and possibly waiting for a response.
372 *Attn attention key
374 BackSpace move cursor left (or send
375 ASCII BS)
376 BackTab tab to start of previous input
377 field
378 CircumNot input "^" in NVT mode, or
379 "notsign" in 3270 mode
380 *Clear clear screen
381 Compose next two keys form a special
382 symbol
383 *Connect(host) connect to host
384 *CursorSelect Cursor Select AID
385 Delete delete character under cursor
386 (or send ASCII DEL)
387 DeleteField delete the entire field
388 DeleteWord delete the current or previous
389 word
390 *Disconnect disconnect from host
391 Down move cursor down
392 Dup duplicate field
393 *Enter Enter AID (or send ASCII CR)
394 Erase erase previous character (or
395 send ASCII BS)
396 EraseEOF erase to end of current field
397 EraseInput erase all input fields
398 Escape escape to c3270> prompt
399 Execute(cmd) execute a command in a shell
400 FieldEnd move cursor to end of field
401 FieldMark mark field
402 HexString(hex_digits) insert control-character
403 string
404 Home move cursor to first input
405 field
406 Insert set insert mode
407 *Interrupt send TELNET IP to host
408 Key(keysym) insert key keysym
409 Key(0xxx) insert key with ASCII code xx
410 Left move cursor left
411 Left2 move cursor left 2 positions
412 MonoCase toggle uppercase-only mode
413 MoveCursor(row, col) move cursor to (row,col)
414 Newline move cursor to first field on
415 next line (or send ASCII LF)
416 NextWord move cursor to next word
417 *PA(n) Program Attention AID (n from
418 1 to 3)
419 *PF(n) Program Function AID (n from 1
422 to 24)
423 PreviousWord move cursor to previous word
424 Printer(Start[,lu]|Stop) Start or stop printer session
425 PrintText(command) print screen text on printer
426 Quit exit c3270
427 Redraw redraw window
428 Reset reset locked keyboard
429 Right move cursor right
430 Right2 move cursor right 2 positions
431 *Script(command[,arg...]) run a script
432 *String(string) insert string (simple macro
433 facility)
434 *SysReq System Request AID
435 Tab move cursor to next input
436 field
437 Toggle(option[,set|clear]) toggle an option
438 ToggleInsert toggle insert mode
439 ToggleReverse toggle reverse-input mode
440 *Transfer(option=value...) file transfer
441 Up move cursor up
442 ignore do nothing
443 Any of the above actions may be entered at the c3270> prompt; these
445 commands are also available for use in keymaps (see KEYMAPS). Command
446 names are case-insensitive. Parameters can be specified with
447 parentheses and commas, e.g.:
448 PF(1)
449 or with spaces, e.g.:
450 PF 1
451 Parameters can be quoted with double-quote characters, to allow spaces,
452 commas, and parentheses to be used.
453 c3270 also supports the following interactive commands:
455 Help Displays a list of available commands.
457 Show Displays statistics and settings.
459 Trace Turns tracing on or off. The command trace on enables data
461 stream and keyboard event tracing; the command trace off
462 disables it. The qualifier data or keyboard can be specified
463 before on or off to enable or disable a particular trace. After
464 on, a filename may be specified to override the default trace
465 file name of /tmp/x3trc.pid.
466
468 The -keymap option allows a keymap to be specified. If the option
469 -keymap xxx is given, then c3270 will first look for a resource named
470 c3270.keymap.xxx; if that is not found, then it will look for a file
471 named xxx.
472 Multiple keymaps may be specified be separating their names with
474 commas. Definitions in later keymaps supercede those in earlier
475 keymaps.
476 In addition, separate keymaps may be defined that apply only in 3270
478 mode or only in NVT mode. For example, the resource definition
479 c3270.keymap.xxx.nvt will augment the definition of c3270.keymap.xxx,
480 when c3270 is in NVT mode. Similarly, the resource definition
481 c3270.keymap.xxx.3270 will augment the definition of c3270.keymap.xxx,
482 when c3270 is in 3270 mode.
483 Keymaps specify actions to perform when a particular sequence of keys
485 is pressed. Each line in a keymap has the following syntax:
486 [Meta][Ctrl]<Key>key...: Action[(param[,...])] ...
488 For example:
490 Meta<Key>c: Clear()
492 <Key>PPAGE: PF(7)
493 Ctrl<Key>A <Key>F1: PF(13)
494 The optional Meta or Ctrl qualifiers specify that the Meta and Ctrl
496 keys are pressed along with the specified key, respectively. The key
497 is either a valid X11 keysym (these are the ISO 8859-1 symbol names,
498 such as equal for `=' and a for `a') or a valid symbolic ncurses key
499 name, such as UP. The Action is an action from the ACTIONS list,
500 above. More than one action may be specified. (Note that symbolic
501 ncurses key names can be used only if the c3270.cursesKeymap resource
502 is set to True, which enables ncurses keymap mode.)
503 Keymap entries are case-sensitive and modifier-specific. This means
505 that a keymap for the b key will match only a lowercase b. Actions for
506 uppercase B, or for Meta-b or Control-B, must be specified separately.
507 The base keymap is:
509 Key Action
511 ─────────────────────────────────────
512 Ctrl<Key>] Escape
513 Ctrl<Key>a Ctrl<Key>a Key(0x01)
514 Ctrl<Key>a Ctrl<Key>] Key(0x1d)
515 Ctrl<Key>a <Key>Tab BackTab
516 Ctrl<Key>a <Key>c Clear
517 Ctrl<Key>a <Key>e Escape
518 Ctrl<Key>a <Key>r Reset
519 Ctrl<Key>a <Key>l Redraw
520 Ctrl<Key>a <Key>m Compose
521 Ctrl<Key>a <Key>^ Key(notsign)
522 <Key>UP Up
523 <Key>DOWN Down
524 <Key>LEFT Left
525 <Key>RIGHT Right
526 <Key>F(n) PF(n)
527 Ctrl<Key>a <Key>F(n) PF(n+12)
528 Ctrl<Key>a <Key>1 PA(1)
529 Ctrl<Key>a <Key>2 PA(2)
530 Ctrl<Key>a <Key>3 PA(3)
531 The base 3270-mode keymap adds:
533 Key Action
535 ───────────────────────────
536 Ctrl<Key>c Clear
537 Ctrl<Key>r Reset
538 Ctrl<Key>l Redraw
539 <Key>Tab Tab
540 <Key>DC Delete
541 <Key>BACKSPACE BackSpace
542 <Key>BackSpace BackSpace
543 <Key>Return Enter
544 <Key>Linefeed Newline
545
547 Some keyboards do not have a Meta key. Instead, they have an Alt key.
548 Sometimes this key acts as a proper Meta key, that is, it is a modifier
549 key that sets the high-order bit (0x80) in the code that is transmitted
550 for each key. Other keyboards send a two-character sequence when the
551 Alt key is pressed with another key: the Escape character (0x1b),
552 followed by the code for the other key.
553 The resource c3270.metaEscape and the termcap km attribute control how
555 c3270 will interpret these sequences. When c3270.metaEscape is set to
556 true, or when c3270.metaEscape is set to auto and the termcap km
557 attribute is set, the keyboard is assumed to have a separate Meta key.
558 The Escape key can be used as an ordinary data key and has no special
559 meaning.
560 When c3270.metaEscape is set to true, or when c3270.metaEscape is set
562 to auto and the termcap km attribute is not set, the keyboard is
563 assumed to use the Escape character as a prefix to indicate that the
564 following character is supposed to have the high-order bit set. When
565 c3270 sees an Escape character from the keyboard, it sets a short
566 timeout. If another character arrives before the timeout expires, then
567 c3270 will combine the two characters, setting the high-order bit of
568 the second. In an event trace file, the combined character is listed
569 as derived. In a keymap, only the combined character or the Meta
570 prefix may be used. The Escape key can still be used by itself, but
571 only if there is a short pause before pressing another key.
572 The default value for c3270.metaEscape is auto.
574
576 The Transfer action implements IND$FILE file transfer. This action
577 requires that the IND$FILE program be installed on the IBM host, and
578 that the 3270 cursor be located in a field that will accept a TSO or
579 VM/CMS command.
580 Because of the complexity and number of options for file transfer, the
582 parameters to the Transfer action take the unique form of option=value,
583 and can appear in any order. The options are:
584 Option Required? Default Other Values
586 ────────────────────────────────────────────────────────
587 Direction No send receive
588 HostFile Yes
589 LocalFile Yes
590 Host No tso vm
591 Mode No ascii binary
592 Cr No remove add, keep
593 Exist No keep replace, append
594 Recfm No fixed, variable,
595 undefined
596 Lrecl No
597 Blksize No
598 Allocation No tracks,
599 cylinders,
600 avblock
601 PrimarySpace No
602 SecondarySpace No
603 BufferSize No 4096
604 The option details are as follows.
606 Direction
608 send (the default) to send a file to the host, receive to
609 receive a file from the host.
610 HostFile
612 The name of the file on the host.
613 LocalFile
615 The name of the file on the local workstation.
616 Host The type of host (which dictates the form of the IND$FILE
618 command): tso (the default) or vm.
619 Mode Use ascii (the default) for a text file, which will be
621 translated between EBCDIC and ASCII as necessary. Use binary
622 for non-text files.
623 Cr Controls how Newline characters are handled when transferring
625 Mode=ascii files. remove (the default) strips Newline
626 characters in local files before transferring them to the host.
627 add adds Newline characters to each host file record before
628 transferring it to the local workstation. keep preserves
629 Newline characters when transferring a local file to the host.
630 Exist Controls what happens when the destination file already exists.
632 keep (the default) preserves the file, causing the Transfer
633 action to fail. replace overwrites the destination file with
634 the source file. append appends the source file to the
635 destination file.
636 Recfm Controls the record of files created on the host. fixed
638 creates a file with fixed-length records. variable creates a
639 file with variable-length records. undefined creates a file
640 with undefined-length records (TSO hosts only). The Lrecl
641 option controls the record length or maximum record length for
642 Recfm=fixed and Recfm=variable files, respectively.
643 Lrecl Specifies the record length (or maximum record length) for files
645 created on the host.
646 Blksize
648 Specifies the block size for files created on the host. (TSO
649 hosts only.)
650 Allocation
652 Specifies the units for the TSO host PrimarySpace and
653 SecondarySpace options: tracks, cylinders or avblock.
654 PrimarySpace
656 Primary allocation for a file created on a TSO host. The units
657 are given by the Allocation option.
658 SecondarySpace
660 Secondary allocation for a file created on a TSO host. The
661 units are given by the Allocation option.
662 BufferSize
664 Buffer size for DFT-mode transfers. Can range from 256 to
665 32768. Larger values give better performance, but some hosts
666 may not be able to support them.
667
669 There are several types of script functions available.
670 The String Action
672 The simplest method for scripting is provided via the String
673 action. The arguments to String are one or more double-quoted
674 strings which are inserted directly as if typed. The C
675 backslash conventions are honored as follows. (Entries marked *
676 mean that after sending the AID code to the host, c3270 will
677 wait for the host to unlock the keyboard before further
678 processing the string.)
679 \b Left
681 \f Clear*
682 \n Enter*
683 \pan PA(n)*
684 \pfnn PF(nn)*
685 \r Newline
686 \t Tab
687 \T BackTab
688 An example keymap entry would be:
690 Meta<Key>p: String("probs clearrdr\n")
691 Note: The strings are in ASCII and converted to EBCDIC, so
693 beware of inserting control codes.
694 There is also an alternate form of the String action, HexString,
696 which is used to enter non-printing data. The argument to
697 HexString is a string of hexadecimal digits, two per character.
698 A leading 0x or 0X is optional. In 3270 mode, the hexadecimal
699 data represent EBCDIC characters, which are entered into the
700 current field. In NVT mode, the hexadecimal data represent
701 ASCII characters, which are sent directly to the host.
702 The Script Action
704 This action causes c3270 to start a child process which can
705 execute c3270 actions. Standard input and output from the child
706 process are piped back to c3270. The Script action is fully
707 documented in x3270-script(1).
708
710 c3270 allows the direct entry of accented letters and special symbols.
711 Pressing and releasing the "Compose" key, followed by two other keys,
712 causes entry of the symbol combining those two keys. For example,
713 "Compose" followed by the "C" key and the "," (comma) key, enters the
714 "C-cedilla" symbol. A C on the status line indicates a pending
715 composite character.
716 The mappings between these pairs of ordinary keys and the symbols they
718 represent is controlled by the "c3270.composeMap" resource; it gives
719 the name of the map to use. The maps themselves are named
720 "c3270.composeMap.name". The default is "latin1", which gives mappings
721 for most of the symbols in the ISO 8859-1 Latin-1 character set that
722 are not in the 7-bit ASCII character set.
723 Note: The default keymap defines Meta<Key>m as the "Compose" key. You
725 may set up your own "Compose" key with a keymap that maps some other
726 keysym onto the Compose action.
727
729 c3270 supports associated printer sessions via the pr3287(1) program.
730 The Printer action is used to start or stop a pr3287 session.
731 The action Printer Start starts a printer session, associated with the
733 current LU. (This works only if the host supports TN3270E.)
734 The action Printer Start lu starts a printer session, associated with a
736 specific lu.
737 The action Printer Stop stops a printer session.
739 The resource c3270.printer.command specifies the command used to print
741 each job; it defaults to lpr. The resource
742 c3270.printer.assocCommandLine specifies the command used to start an
743 associated printer session. It defaults to:
744 pr3287 -assoc %L% -command "%C%" %H%
746 The resource c3270.printer.luCommandLine specifies the command used to
748 start a specific-LU printer session. It defaults to:
749 pr3287 -command "%C%" %L%@%H%
751 When the printer session command is run, the following substitutions
753 are made:
754 Token Substitition
756 %C% Command (value of
757 c3270.printer.command)
758 %H% Host IP address
759 %L% Current or specified LU
760 See pr3287(1) for further details.
762
764 c3270 supports the Sun telnet-passthru service provided by the
765 in.telnet-gw server. This allows outbound telnet connections through a
766 firewall machine. When a p: is prepended to a hostname, c3270 acts
767 much like the itelnet(1) command. It contacts the machine named
768 internet-gateway at the port defined in /etc/services as telnet-
769 passthru (which defaults to 3514). It then passes the requested
770 hostname and port to the in.telnet-gw server.
771
773 When running as a 3270 Model 5, c3270 can take advantage of terminals
774 that can switch between 80 and 132 column modes.
775 Because the curses library does not support mode switching, the escape
777 sequences and resulting screen dimensions must be specified explicitly
778 to c3270. These are specified with the -altscreen and -defscreen
779 command-line options, or the altScreen and defScreen resources.
780 -altscreen or altScreen defines the alternate (132-column) mode;
781 -defscreen or defScreen defines the default (80-column) mode.
782 The syntax for the options and resources is rowsxcols=init_string,
784 where rows and cols give the screen dimensions, and init_string is the
785 escape sequence to transmit to the terminal to enter that mode. For
786 defscreen, the minimum dimensions are 24 rows and 80 columns. For
787 altscreen, the minimum dimensions are 27 rows and 132 columns. Within
788 init_string, the usual escape sequences are supported (\E for escape,
789 \r, \b, etc.). For example, the init string for a 132-column xterm is:
790 \E[?40h\E[?3h
792 Note: When defscreen and altscreen are specified, the model number is
794 always set to 5.
795
797 Certain c3270 options can be configured via resources. Resources are
798 defined in the file .c3270pro in the user's home directory, and by -xrm
799 options. The definitions are similar to X11 resources, and use a
800 similar syntax. The resources available in c3270 are:
801 Resource Default Option Purpose
803 ────────────────────────────────────────────────────────────
804 allBold Auto -allbold Display all
805 characters bold
806 altScreen -altscreen 132-col screen
807 definition
808 blankFill False -set blankFill Blank Fill mode
809 charset bracket -charset EBCDIC character
810 set
811 charset.foo Definition of
812 character set
813 foo
814 composeMap latin1 Name of
815 composed-
816 character map
817 cursesKeymap True Set curses
818 keymap option
819 defScreen -defscreen 80-col screen
820 definition
821 dsTrace False -trace Data stream
822 tracing
823 eof ^D NVT-mode EOF
824 character
825 erase ^H NVT-mode erase
826 character
827 extended True Use 3270
828 extended data
829 stream
830 eventTrace False -trace Event tracing
831 ftCommand ind$file Host file
832 transfer command
833 hostsFile -hostsfile Host alias/macro
834 file
835 icrnl False Map CR to NL on
836 NVT-mode input
837 inlcr False Map NL to CR in
838 NVT-mode input
839 intr ^C NVT-mode
840 interrupt
841 character
842 keymap -keymap Keyboard map
843 name
844 keymap.foo Definition of
845 keymap foo
846 kill ^U NVT-mode kill
847 character
848 lineWrap False -set lineWrap NVT line wrap
849 mode
850 lnext ^V NVT-mode lnext
851 character
852 m3279 (note 1) -mono 3279 (color)
854 emulation
855 metaEscape Auto Interpret ESC-x
856 as Meta-x
857 monoCase False -set monoCase Mono-case mode
858 numericLock False Lock keyboard
859 for numeric
860 field error
861 oerrLock True Lock keyboard
862 for input error
863 oversize -oversize Oversize screen
864 dimensions
865 port telnet -port Non-default TCP
866 port
867 printer.* (note 4) Printer session
868 config
869 quit ^\ NVT-mode quit
870 character
871 rprnt ^R NVT-mode reprint
872 character
873 secure False Disable
874 "dangerous"
875 options
876 termName (note 2) -tn TELNET terminal
877 type string
878 traceDir /tmp Directory for
879 trace files
880 traceFile (note 3) -tracefile File for trace
881 output
882 typeahead True Allow typeahead
883 werase ^W NVT-mode word-
884 erase character
885 Note 1: m3279 defaults to True if the terminal supports color,
887 False otherwise. It can be forced to False with the -mono
888 option.
889 Note 2: The default terminal type string is constructed from the
891 model number, color emulation, and extended data stream modes.
892 E.g., a model 2 with color emulation and the extended data
893 stream option would be sent as IBM-3279-2-E. Note also that
894 when TN3270E mode is used, the terminal type is always sent as
895 some type of 3278.
896 Note 3: The default trace file is x3trc.pid in the directory
898 specified by the traceDir resource.
899 Note 4: See PRINTER SUPPORT for details.
901 In .c3270pro, lines are continued with a backslash character.
903 -xrm options override definitions found in .c3270pro. If more than one
905 -xrm option is given for the same resource, the last one on the command
906 line is used.
907
909 /usr/local/lib/x3270/ibm_hosts
910 $HOME/.c3270pro
911
914 x3270(1), s3270(1), tcl3270(1), ibm_hosts(5), x3270-script(1),
915 pr3287(1), telnet(1), tn3270(1)
916 Data Stream Programmer's Reference, IBM GA23-0059
917 Character Set Reference, IBM GA27-3831
918 RFC 1576, TN3270 Current Practices
919 RFC 1646, TN3270 Extensions for LUname and Printer Selection
920 RFC 2355, TN3270 Enhancements
921
923 Modifications Copyright 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001,
924 2002, 2004 by Paul Mattes.
925 Original X11 Port Copyright 1990 by Jeff Sparkes.
926 Permission to use, copy, modify, and distribute this software
927 and its documentation for any purpose and without fee is hereby
928 granted, provided that the above copyright notice appear in all
929 copies and that both that copyright notice and this permission
930 notice appear in supporting documentation.
931 Copyright 1989 by Georgia Tech Research Corporation, Atlanta, GA 30332.
932 All Rights Reserved. GTRC hereby grants public use of this
933 software. Derivative works based on this software must
934 incorporate this copyright notice.
935 c3270 is distributed in the hope that it will be useful, but WITHOUT
936 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
937 FITNESS FOR A PARTICULAR PURPOSE. See the file LICENSE for more
938 details.
939
941 c3270 3.3.4
942 09 April 2005 c3270(1)