1console_codes(4)           Kernel Interfaces Manual           console_codes(4)
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NAME

6       console_codes - Linux console escape and control sequences
7

DESCRIPTION

9       The   Linux  console  implements  a  large  subset  of  the  VT102  and
10       ECMA-48/ISO 6429/ANSI X3.64 terminal controls,  plus  certain  private-
11       mode  sequences  for changing the color palette, character-set mapping,
12       and so on.  In the tabular descriptions below, the second column  gives
13       ECMA-48  or  DEC  mnemonics  (the  latter if prefixed with DEC) for the
14       given function.  Sequences without a mnemonic are neither  ECMA-48  nor
15       VT102.
16
17       After  all  the normal output processing has been done, and a stream of
18       characters arrives at the console driver for actual printing, the first
19       thing  that  happens is a translation from the code used for processing
20       to the code used for printing.
21
22       If the console is in UTF-8 mode, then the incoming bytes are first  as‐
23       sembled into 16-bit Unicode codes.  Otherwise, each byte is transformed
24       according to the current mapping table (which translates it to  a  Uni‐
25       code value).  See the Character Sets section below for discussion.
26
27       In the normal case, the Unicode value is converted to a font index, and
28       this is stored in video memory, so that  the  corresponding  glyph  (as
29       found  in  video ROM) appears on the screen.  Note that the use of Uni‐
30       code (and the design of the PC hardware) allows us to use 512 different
31       glyphs simultaneously.
32
33       If  the  current  Unicode  value is a control character, or we are cur‐
34       rently processing an escape sequence, the value will treated specially.
35       Instead  of  being turned into a font index and rendered as a glyph, it
36       may trigger cursor movement or other control functions.  See the  Linux
37       Console Controls section below for discussion.
38
39       It  is  generally not good practice to hard-wire terminal controls into
40       programs.  Linux supports a terminfo(5) database of terminal  capabili‐
41       ties.   Rather than emitting console escape sequences by hand, you will
42       almost always want to use a terminfo-aware screen  library  or  utility
43       such as ncurses(3), tput(1), or reset(1).
44
45   Linux console controls
46       This  section describes all the control characters and escape sequences
47       that invoke special functions (i.e.,  anything  other  than  writing  a
48       glyph at the current cursor location) on the Linux console.
49
50       Control characters
51
52       A  character is a control character if (before transformation according
53       to the mapping table) it has one of the 14 codes 00 (NUL), 07 (BEL), 08
54       (BS), 09 (HT), 0a (LF), 0b (VT), 0c (FF), 0d (CR), 0e (SO), 0f (SI), 18
55       (CAN), 1a (SUB), 1b (ESC), 7f (DEL).  One can set  a  "display  control
56       characters"  mode  (see  below), and allow 07, 09, 0b, 18, 1a, 7f to be
57       displayed as glyphs.  On the other hand, in UTF-8 mode all codes  00–1f
58       are  regarded as control characters, regardless of any "display control
59       characters" mode.
60
61       If we have a control character, it is acted upon immediately  and  then
62       discarded (even in the middle of an escape sequence) and the escape se‐
63       quence continues with the next character.  (However, ESC starts  a  new
64       escape  sequence,  possibly aborting a previous unfinished one, and CAN
65       and SUB abort any escape sequence.)  The recognized control  characters
66       are BEL, BS, HT, LF, VT, FF, CR, SO, SI, CAN, SUB, ESC, DEL, CSI.  They
67       do what one would expect:
68
69       BEL (0x07, ^G)
70              beeps;
71
72       BS (0x08, ^H)
73              backspaces one column (but not past the beginning of the line);
74
75       HT (0x09, ^I)
76              goes to the next tab stop or to the end of the line if there  is
77              no earlier tab stop;
78
79       LF (0x0A, ^J)
80       VT (0x0B, ^K)
81       FF (0x0C, ^L)
82              all  give a linefeed, and if LF/NL (new-line mode) is set also a
83              carriage return;
84
85       CR (0x0D, ^M)
86              gives a carriage return;
87
88       SO (0x0E, ^N)
89              activates the G1 character set;
90
91       SI (0x0F, ^O)
92              activates the G0 character set;
93
94       CAN (0x18, ^X)
95       SUB (0x1A, ^Z)
96              abort escape sequences;
97
98       ESC (0x1B, ^[)
99              starts an escape sequence;
100
101       DEL (0x7F)
102              is ignored;
103
104       CSI (0x9B)
105              is equivalent to ESC [.
106
107       ESC- but not CSI-sequences
108
109       ESC c     RIS      Reset.
110       ESC D     IND      Linefeed.
111       ESC E     NEL      Newline.
112       ESC H     HTS      Set tab stop at current column.
113       ESC M     RI       Reverse linefeed.
114       ESC Z     DECID    DEC private identification. The kernel returns the
115                          string  ESC [ ? 6 c, claiming that it is a VT102.
116       ESC 7     DECSC    Save current state (cursor coordinates, attributes,
117                          character sets pointed at by G0, G1).
118       ESC 8     DECRC    Restore state most recently saved by ESC 7.
119       ESC %              Start sequence selecting character set
120       ESC % @               Select default (ISO 646 / ISO 8859-1)
121       ESC % G               Select UTF-8
122       ESC % 8               Select UTF-8 (obsolete)
123       ESC # 8   DECALN   DEC screen alignment test - fill screen with E's.
124       ESC (              Start sequence defining G0 character set (followed
125                          by one of B, 0, U, K, as below)
126       ESC ( B            Select default (ISO 8859-1 mapping).
127       ESC ( 0            Select VT100 graphics mapping.
128       ESC ( U            Select null mapping - straight to character ROM.
129       ESC ( K            Select user mapping - the map that is loaded by the
130                          utility mapscrn(8).
131
132
133       ESC )              Start sequence defining G1 (followed by one of B, 0,
134                          U, K, as above).
135       ESC >     DECPNM   Set numeric keypad mode
136       ESC =     DECPAM   Set application keypad mode
137       ESC ]     OSC      Operating System Command prefix.
138       ESC ] R            Reset palette.
139       ESC ] P            Set palette, with parameter given in 7 hexadecimal
140                          digits nrrggbb after the final P. Here n is the
141                          color (0–15), and rrggbb indicates the
142                          red/green/blue values (0–255).
143
144       ECMA-48 CSI sequences
145
146       CSI (or ESC [) is followed by a sequence of parameters,  at  most  NPAR
147       (16),  that  are  decimal numbers separated by semicolons.  An empty or
148       absent parameter is taken to be 0.  The sequence of parameters  may  be
149       preceded by a single question mark.
150
151       However,  after  CSI [ (or ESC [ [) a single character is read and this
152       entire sequence is ignored.  (The idea is to ignore an echoed  function
153       key.)
154
155       The action of a CSI sequence is determined by its final character.
156
157       @   ICH       Insert the indicated # of blank characters.
158       A   CUU       Move cursor up the indicated # of rows.
159       B   CUD       Move cursor down the indicated # of rows.
160       C   CUF       Move cursor right the indicated # of columns.
161       D   CUB       Move cursor left the indicated # of columns.
162       E   CNL       Move cursor down the indicated # of rows, to column 1.
163       F   CPL       Move cursor up the indicated # of rows, to column 1.
164       G   CHA       Move cursor to indicated column in current row.
165       H   CUP       Move cursor to the indicated row, column (origin at 1,1).
166       J   ED        Erase display (default: from cursor to end of display).
167                     ESC [ 1 J: erase from start to cursor.
168                     ESC [ 2 J: erase whole display.
169                     ESC [ 3 J: erase whole display including scroll-back buf‐
170                     fer (since Linux 3.0).
171       K   EL        Erase line (default: from cursor to end of line).
172                     ESC [ 1 K: erase from start of line to cursor.
173                     ESC [ 2 K: erase whole line.
174       L   IL        Insert the indicated # of blank lines.
175       M   DL        Delete the indicated # of lines.
176       P   DCH       Delete the indicated # of characters on current line.
177       X   ECH       Erase the indicated # of characters on current line.
178       a   HPR       Move cursor right the indicated # of columns.
179       c   DA        Answer ESC [ ? 6 c: "I am a VT102".
180       d   VPA       Move cursor to the indicated row, current column.
181       e   VPR       Move cursor down the indicated # of rows.
182       f   HVP       Move cursor to the indicated row, column.
183       g   TBC       Without parameter: clear tab stop at current position.
184                     ESC [ 3 g: delete all tab stops.
185       h   SM        Set Mode (see below).
186       l   RM        Reset Mode (see below).
187       m   SGR       Set attributes (see below).
188       n   DSR       Status report (see below).
189       q   DECLL     Set keyboard LEDs.
190                     ESC [ 0 q: clear all LEDs
191                     ESC [ 1 q: set Scroll Lock LED
192                     ESC [ 2 q: set Num Lock LED
193                     ESC [ 3 q: set Caps Lock LED
194       r   DECSTBM   Set scrolling region; parameters are top and bottom row.
195       s   ?         Save cursor location.
196       u   ?         Restore cursor location.
197       `   HPA       Move cursor to indicated column in current row.
198
199       ECMA-48 Select Graphic Rendition
200
201       The ECMA-48 SGR sequence ESC [ parameters m  sets  display  attributes.
202       Several  attributes can be set in the same sequence, separated by semi‐
203       colons.  An empty parameter (between semicolons or string initiator  or
204       terminator) is interpreted as a zero.
205
206       param      result
207       0          reset all attributes to their defaults
208       1          set bold
209       2          set half-bright (simulated with color on a color display)
210       3          set italic (since Linux 2.6.22; simulated with color on a color display)
211       4          set underscore (simulated with color on a color display) (the colors
212                  used to simulate dim or underline are set using ESC ] ...)
213       5          set blink
214       7          set reverse video
215       10         reset selected mapping, display control flag, and toggle meta flag
216                  (ECMA-48 says "primary font").
217       11         select null mapping, set display control flag, reset toggle meta flag
218                  (ECMA-48 says "first alternate font").
219       12         select null mapping, set display control flag, set toggle meta flag
220                  (ECMA-48 says "second alternate font").  The toggle meta flag causes the
221                  high bit of a byte to be toggled before the mapping table translation is
222                  done.
223       21         set underline; before Linux 4.17, this value set normal intensity (as is
224                  done in many other terminals)
225       22         set normal intensity
226       23         italic off (since Linux 2.6.22)
227       24         underline off
228       25         blink off
229       27         reverse video off
230       30         set black foreground
231       31         set red foreground
232       32         set green foreground
233       33         set brown foreground
234       34         set blue foreground
235       35         set magenta foreground
236       36         set cyan foreground
237       37         set white foreground
238       38         256/24-bit foreground color follows, shoehorned into 16 basic colors
239                  (before Linux 3.16: set underscore on, set default foreground color)
240       39         set default foreground color (before Linux 3.16: set underscore off, set
241                  default foreground color)
242       40         set black background
243       41         set red background
244       42         set green background
245       43         set brown background
246       44         set blue background
247       45         set magenta background
248       46         set cyan background
249       47         set white background
250       48         256/24-bit background color follows, shoehorned into 8 basic colors
251       49         set default background color
252       90..97     set foreground to bright versions of 30..37
253       100..107   set background, same as 40..47 (bright not supported)
254
255       Commands 38 and 48 require further arguments:
256
257       ;5;x       256 color: values 0..15 are IBGR  (black,  red,  green,  ...
258                  white),  16..231  a  6x6x6  color cube, 232..255 a grayscale
259                  ramp
260       ;2;r;g;b   24-bit color, r/g/b components are in the range 0..255
261
262       ECMA-48 Mode Switches
263
264       ESC [ 3 h
265              DECCRM (default off): Display control chars.
266
267       ESC [ 4 h
268              DECIM (default off): Set insert mode.
269
270       ESC [ 20 h
271              LF/NL (default off): Automatically follow echo of LF, VT, or  FF
272              with CR.
273
274       ECMA-48 Status Report Commands
275
276       ESC [ 5 n
277              Device status report (DSR): Answer is ESC [ 0 n (Terminal OK).
278
279       ESC [ 6 n
280              Cursor position report (CPR): Answer is ESC [ y ; x R, where x,y
281              is the cursor location.
282
283       DEC Private Mode (DECSET/DECRST) sequences
284
285       These are not described in ECMA-48.  We list the  Set  Mode  sequences;
286       the  Reset  Mode  sequences  are obtained by replacing the final 'h' by
287       'l'.
288
289       ESC [ ? 1 h
290              DECCKM (default off): When set, the cursor keys send  an  ESC  O
291              prefix, rather than ESC [.
292
293       ESC [ ? 3 h
294              DECCOLM (default off = 80 columns): 80/132 col mode switch.  The
295              driver sources note that this alone does not suffice; some user-
296              mode  utility  such  as resizecons(8) has to change the hardware
297              registers on the console video card.
298
299       ESC [ ? 5 h
300              DECSCNM (default off): Set reverse-video mode.
301
302       ESC [ ? 6 h
303              DECOM (default off): When set, cursor addressing is relative  to
304              the upper left corner of the scrolling region.
305
306       ESC [ ? 7 h
307              DECAWM  (default  on): Set autowrap on.  In this mode, a graphic
308              character emitted after column 80 (or column 132 of  DECCOLM  is
309              on) forces a wrap to the beginning of the following line first.
310
311       ESC [ ? 8 h
312              DECARM (default on): Set keyboard autorepeat on.
313
314       ESC [ ? 9 h
315              X10  Mouse  Reporting (default off): Set reporting mode to 1 (or
316              reset to 0)—see below.
317
318       ESC [ ? 25 h
319              DECTECM (default on): Make cursor visible.
320
321       ESC [ ? 1000 h
322              X11 Mouse Reporting (default off): Set reporting mode to  2  (or
323              reset to 0)—see below.
324
325       Linux Console Private CSI Sequences
326
327       The following sequences are neither ECMA-48 nor native VT102.  They are
328       native to the Linux console driver.  Colors are in SGR parameters: 0  =
329       black,  1 = red, 2 = green, 3 = brown, 4 = blue, 5 = magenta, 6 = cyan,
330       7 = white; 8–15 = bright versions of 0–7.
331
332       ESC [ 1 ; n ]       Set color n as the underline color.
333       ESC [ 2 ; n ]       Set color n as the dim color.
334
335       ESC [ 8 ]           Make the current color pair the default attributes.
336       ESC [ 9 ; n ]       Set screen blank timeout to n minutes.
337       ESC [ 10 ; n ]      Set bell frequency in Hz.
338       ESC [ 11 ; n ]      Set bell duration in msec.
339       ESC [ 12 ; n ]      Bring specified console to the front.
340       ESC [ 13 ]          Unblank the screen.
341       ESC [ 14 ; n ]      Set the VESA powerdown interval in minutes.
342       ESC [ 15 ]          Bring the previous  console  to  the  front  (since
343                           Linux 2.6.0).
344       ESC [ 16 ; n ]      Set  the  cursor  blink  interval  in  milliseconds
345                           (since Linux 4.2).
346
347   Character sets
348       The kernel knows about 4 translations of bytes into console-screen sym‐
349       bols.   The  four tables are: a) Latin1 -> PC, b) VT100 graphics -> PC,
350       c) PC -> PC, d) user-defined.
351
352       There are two character sets, called G0 and G1, and one of them is  the
353       current  character set.  (Initially G0.)  Typing ^N causes G1 to become
354       current, ^O causes G0 to become current.
355
356       These variables G0 and G1 point at a  translation  table,  and  can  be
357       changed by the user.  Initially they point at tables a) and b), respec‐
358       tively.  The sequences ESC ( B and ESC ( 0 and ESC (  U  and  ESC  (  K
359       cause  G0  to  point  at  translation table a), b), c), and d), respec‐
360       tively.  The sequences ESC ) B and ESC ) 0 and ESC )  U  and  ESC  )  K
361       cause  G1  to  point  at  translation table a), b), c), and d), respec‐
362       tively.
363
364       The sequence ESC c causes a terminal reset, which is what you  want  if
365       the  screen is all garbled.  The oft-advised "echo ^V^O" will make only
366       G0 current, but there is no guarantee that G0 points at table  a).   In
367       some  distributions  there  is  a program reset(1) that just does "echo
368       ^[c".  If your terminfo entry for the console is correct  (and  has  an
369       entry rs1=\Ec), then "tput reset" will also work.
370
371       The user-defined mapping table can be set using mapscrn(8).  The result
372       of the mapping is that if a symbol c is printed, the symbol s =  map[c]
373       is sent to the video memory.  The bitmap that corresponds to s is found
374       in the character ROM, and can be changed using setfont(8).
375
376   Mouse tracking
377       The mouse tracking facility is intended to  return  xterm(1)-compatible
378       mouse  status  reports.   Because the console driver has no way to know
379       the device or type of the mouse, these reports are returned in the con‐
380       sole  input  stream  only  when  the virtual terminal driver receives a
381       mouse update ioctl.  These ioctls must be generated  by  a  mouse-aware
382       user-mode application such as the gpm(8) daemon.
383
384       The  mouse  tracking  escape sequences generated by xterm(1) encode nu‐
385       meric parameters in a single character as value+040.  For example,  '!'
386       is 1.  The screen coordinate system is 1-based.
387
388       The X10 compatibility mode sends an escape sequence on button press en‐
389       coding the location and the mouse button pressed.   It  is  enabled  by
390       sending  ESC  [  ? 9 h and disabled with ESC [ ? 9 l.  On button press,
391       xterm(1) sends ESC [ M bxy (6 characters).  Here b is button-1,  and  x
392       and  y  are  the  x  and y coordinates of the mouse when the button was
393       pressed.  This is the same code the kernel also produces.
394
395       Normal tracking mode (not implemented in Linux 2.0.24) sends an  escape
396       sequence  on  both  button  press and release.  Modifier information is
397       also sent.  It is enabled by sending ESC [ ? 1000 h and  disabled  with
398       ESC  [  ?  1000  l.  On button press or release, xterm(1) sends ESC [ M
399       bxy.  The low two bits of b encode button information:  0=MB1  pressed,
400       1=MB2  pressed,  2=MB3  pressed, 3=release.  The upper bits encode what
401       modifiers were down when the button was pressed and are added together:
402       4=Shift, 8=Meta, 16=Control.  Again x and y are the x and y coordinates
403       of the mouse event.  The upper left corner is (1,1).
404
405   Comparisons with other terminals
406       Many different terminal types are described, like the Linux console, as
407       being  "VT100-compatible".   Here  we  discuss  differences between the
408       Linux console and the two most important  others,  the  DEC  VT102  and
409       xterm(1).
410
411       Control-character handling
412
413       The VT102 also recognized the following control characters:
414
415       NUL (0x00)
416              was ignored;
417
418       ENQ (0x05)
419              triggered an answerback message;
420
421       DC1 (0x11, ^Q, XON)
422              resumed transmission;
423
424       DC3 (0x13, ^S, XOFF)
425              caused  VT100 to ignore (and stop transmitting) all codes except
426              XOFF and XON.
427
428       VT100-like DC1/DC3 processing may be enabled by the terminal driver.
429
430       The xterm(1) program (in VT100 mode) recognizes the control  characters
431       BEL, BS, HT, LF, VT, FF, CR, SO, SI, ESC.
432
433       Escape sequences
434
435       VT100 console sequences not implemented on the Linux console:
436
437       ESC N       SS2   Single shift 2. (Select G2 char‐
438                         acter set for the next character
439                         only.)
440       ESC O       SS3   Single shift 3. (Select G3 char‐
441                         acter set for the next character
442                         only.)
443       ESC P       DCS   Device  control string (ended by
444                         ESC \)
445       ESC X       SOS   Start of string.
446       ESC ^       PM    Privacy message (ended by ESC \)
447       ESC \       ST    String terminator
448       ESC * ...         Designate G2 character set
449       ESC + ...         Designate G3 character set
450
451       The program xterm(1) (in VT100 mode) recognizes ESC c, ESC # 8, ESC  >,
452       ESC =, ESC D, ESC E, ESC H, ESC M, ESC N, ESC O, ESC P ... ESC \, ESC Z
453       (it answers ESC [ ? 1 ; 2 c, "I am a VT100 with advanced video option")
454       and  ESC ^ ... ESC \ with the same meanings as indicated above.  It ac‐
455       cepts ESC (, ESC ), ESC *,  ESC + followed by 0, A, B for the DEC  spe‐
456       cial character and line drawing set, UK, and US-ASCII, respectively.
457
458       The  user  can  configure xterm(1) to respond to VT220-specific control
459       sequences, and it will identify itself as a VT52, VT100, and up depend‐
460       ing on the way it is configured and initialized.
461
462       It  accepts ESC ] (OSC) for the setting of certain resources.  In addi‐
463       tion to the ECMA-48 string terminator (ST), xterm(1) accepts a  BEL  to
464       terminate  an OSC string.  These are a few of the OSC control sequences
465       recognized by xterm(1):
466
467       ESC ] 0 ; txt ST        Set icon name and window title
468                               to txt.
469       ESC ] 1 ; txt ST        Set icon name to txt.
470
471       ESC ] 2 ; txt ST        Set window title to txt.
472       ESC ] 4 ; num; txt ST   Set ANSI color num to txt.
473       ESC ] 10 ; txt ST       Set dynamic text color to txt.
474       ESC ] 4 6 ; name ST     Change  log file to name (nor‐
475                               mally disabled by  a  compile-
476                               time option).
477       ESC ] 5 0 ; fn ST       Set font to fn.
478
479       It recognizes the following with slightly modified meaning (saving more
480       state, behaving closer to VT100/VT220):
481
482       ESC 7  DECSC   Save cursor
483       ESC 8  DECRC   Restore cursor
484
485       It also recognizes
486
487       ESC F          Cursor to lower left corner of  screen  (if  enabled  by
488                      xterm(1)'s hpLowerleftBugCompat resource).
489       ESC l          Memory lock (per HP terminals).
490                      Locks memory above the cursor.
491       ESC m          Memory unlock (per HP terminals).
492       ESC n   LS2    Invoke the G2 character set.
493       ESC o   LS3    Invoke the G3 character set.
494       ESC |   LS3R   Invoke the G3 character set as GR.
495       ESC }   LS2R   Invoke the G2 character set as GR.
496       ESC ~   LS1R   Invoke the G1 character set as GR.
497
498       It also recognizes ESC % and provides a more complete UTF-8 implementa‐
499       tion than Linux console.
500
501       CSI Sequences
502
503       Old versions of xterm(1), for example, from X11R5, interpret the  blink
504       SGR  as  a bold SGR.  Later versions which implemented ANSI colors, for
505       example, XFree86 3.1.2A in 1995, improved this by  allowing  the  blink
506       attribute  to be displayed as a color.  Modern versions of xterm imple‐
507       ment blink SGR as blinking text and still allow colored text as an  al‐
508       ternate  rendering of SGRs.  Stock X11R6 versions did not recognize the
509       color-setting  SGRs  until  the  X11R6.8  release,  which  incorporated
510       XFree86  xterm.  All ECMA-48 CSI sequences recognized by Linux are also
511       recognized by xterm, however xterm(1) implements  several  ECMA-48  and
512       DEC control sequences not recognized by Linux.
513
514       The  xterm(1)  program recognizes all of the DEC Private Mode sequences
515       listed above, but none of the Linux private-mode sequences.   For  dis‐
516       cussion  of  xterm(1)'s  own private-mode sequences, refer to the Xterm
517       Control Sequences document by Edward Moy, Stephen Gildea, and Thomas E.
518       Dickey available with the X distribution.  That document, though terse,
519       is much longer than this manual page.  For a chronological overview,
520
521http://invisible-island.net/xterm/xterm.log.html
522
523       details changes to xterm.
524
525       The vttest program
526
527http://invisible-island.net/vttest/
528
529       demonstrates many of these control sequences.  The xterm(1) source dis‐
530       tribution also contains sample scripts which exercise other features.
531

NOTES

533       ESC 8 (DECRC) is not able to restore the character set changed with ESC
534       %.
535

BUGS

537       In Linux 2.0.23, CSI is broken, and NUL is not  ignored  inside  escape
538       sequences.
539
540       Some  older  kernel  versions (after Linux 2.0) interpret 8-bit control
541       sequences.  These "C1 controls" use codes between 128 and  159  to  re‐
542       place  ESC  [,  ESC ] and similar two-byte control sequence initiators.
543       There are fragments of that in modern  kernels  (either  overlooked  or
544       broken  by  changes to support UTF-8), but the implementation is incom‐
545       plete and should be regarded as unreliable.
546
547       Linux "private mode" sequences do not follow the rules in  ECMA-48  for
548       private  mode control sequences.  In particular, those ending with ] do
549       not use a standard terminating character.  The OSC  (set  palette)  se‐
550       quence  is  a  greater  problem, since xterm(1) may interpret this as a
551       control sequence which requires a string terminator (ST).   Unlike  the
552       setterm(1) sequences which will be ignored (since they are invalid con‐
553       trol sequences), the palette sequence will make xterm(1) appear to hang
554       (though  pressing the return-key will fix that).  To accommodate appli‐
555       cations which have been hardcoded to use Linux control  sequences,  set
556       the xterm(1) resource brokenLinuxOSC to true.
557
558       An  older  version  of  this document implied that Linux recognizes the
559       ECMA-48 control sequence for invisible text.  It is ignored.
560

SEE ALSO

562       ioctl_console(2), charsets(7)
563
564
565
566Linux man-pages 6.05              2023-02-05                  console_codes(4)
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