1JACKD(1)                                                              JACKD(1)
2
3
4

NAME

6       jackd - JACK Audio Connection Kit sound server
7
8
9

SYNOPSIS

11       jackd [options] -d backend [backend-parameters]
12       jackd --help
13
14
15

DESCRIPTION

17       jackd  is the JACK audio server daemon that allows JACK client programs
18       to process and route audio and MIDI data in a synchronous, sample-accu‐
19       rate and low-latency manner. Originally written for the GNU/Linux oper‐
20       ating system, it also runs on various Unix platforms, Mac OS X  and  MS
21       Windows.  JACK can connect a number of different client applications to
22       an audio device and also to each other. Most clients are external, run‐
23       ning  in their own processes as normal applications. JACK also supports
24       internal clients, which run within the jackd process using  a  loadable
25       "plugin" interface.
26
27       JACK differs from other audio servers in being designed from the ground
28       up for professional audio work. It focuses on two key  areas:  synchro‐
29       nous execution of all clients and low latency operation.
30
31       The  name JACK makes a reference to the classical way of patching audio
32       connections with physical audio jack cables.  JACK is also a  recursive
33       acronym,  that  is  an abbreviation which is part of itself. JACK Audio
34       Connection Kit.
35
36       For  the  latest  JACK  information  please  consult  the   web   site:
37       <http://www.jackaudio.org/>.
38
39
40

OPTIONS

42       -d, --driver backend [backend-parameters ]
43              Select  the  audio  interface  backend. The current list of sup‐
44              ported backends is: alsa, coreaudio, dummy,  firewire,  oss  sun
45              and  portaudio. They are not all available on all platforms. All
46              backend-parameters are optional.
47
48
49       -h, --help
50              Print a brief usage message describing the main  jackd  options.
51              These  do not include backend-parameters, which are listed using
52              the --help option for each specific backend. Examples below show
53              how to list them.
54
55
56       -a, --autoconnect modechar
57              Select  how  to handle self connect requests. They can be ignore
58              or fail, on all port or  just  external  ones.  Use  the  --help
59              option  to  know your system specific options. The default is to
60              not restrict self connect requests.
61
62       -m, --no-mlock
63              Do not attempt to lock memory, even if --realtime.
64
65
66       -n, --name server-name
67              Name this jackd instance server-name. If unspecified, this  name
68              comes   from   the  $JACK_DEFAULT_SERVER  environment  variable.
69              (default: "default")
70
71
72       -p, --port-max  n
73              Set the maximum number of ports  the  JACK  server  can  manage.
74              (default: 256)
75
76
77       --replace-registry
78              Remove  the  shared  memory  registry  used  by  all JACK server
79              instances before startup. This should rarely  be  used,  and  is
80              intended  only for occasions when the structure of this registry
81              changes in ways  that  are  incompatible  across  JACK  versions
82              (which is rare).
83
84
85       -R, --realtime
86              Use realtime scheduling. This is needed for reliable low-latency
87              performance. On many systems, it requires jackd to run with spe‐
88              cial  scheduler  and  memory allocation privileges, which may be
89              obtained in several ways.  (default: true)
90
91
92       -r, --no-realtime
93              Do not use realtime scheduling.
94
95
96       -P, --realtime-priority int
97              When running --realtime, set the scheduler priority to int.
98
99
100       --silent
101              Silence any output during operation.
102
103
104
105       -T, --temporary
106              Exit once all clients have closed their connections.
107
108
109       -t, --timeout int
110              Set client timeout limit in milliseconds.  In realtime mode  the
111              client  timeout  must be smaller than the watchdog timeout (5000
112              msec).  (default: 500)
113
114
115       -Z, --nozombies
116              Prevent JACK from ever kicking out clients because they were too
117              slow.   This cancels the effect any specified timeout value, but
118              JACK and its clients are still subject to the supervision of the
119              watchdog thread or its equivalent.
120
121
122       -C, --internal-session-file internal-session-file
123              Load  internal  clients  and  connections from internal-session-
124              file.  Each line of this configuration file starts with  a  com‐
125              mand.  The following commands are available:
126              l(oad) client-name lib-name client-args
127              With  this command an internal JACK client will be instantiated.
128              client-name and lib-name cannot contain spaces.  The rest of the
129              line  will  be interpreted as client-args and sent to the client
130              library.
131              c(on) source-port destination-port
132              With this command a source port will be connected to a  destina‐
133              tion port.  source-port and destination-port cannot contain spa‐
134              ces.
135              Comments are allowed, they start with #.
136              An example configuration could look like the following:
137               l inprocess1 inprocess
138               l amp1 jalv http://lv2plug.in/plugins/eg-amp
139               c amp:out system:playback_1
140
141
142       -u, --unlock
143              Unlock libraries GTK+, QT, FLTK, Wine.
144
145
146       -v, --verbose
147              Give verbose output.
148
149
150       -c, --clocksource ( h(pet)  |  s(ystem) )
151              Select a specific wall clock (HPET timer, System timer).
152
153
154       -V, --version
155              Print the current JACK version number and exit.
156
157
158
159   ALSA BACKEND OPTIONS
160       -C, --capture [ name ]
161              Provide only capture ports,  unless  combined  with  -D  or  -P.
162              Optionally set capture device name.
163
164
165       -d, --device name
166              The ALSA pcm device name to use. If none is specified, JACK will
167              use  "hw:0",  the  first  hardware  card  defined  in  /etc/mod‐
168              ules.conf.
169
170
171       -z, --dither [rectangular,triangular,shaped,none]
172              Set  dithering  mode.  If none or unspecified, dithering is off.
173              Only the first letter of the mode name is required.
174
175
176       -D, --duplex
177              Provide both capture and playback ports. Defaults to  on  unless
178              only one of -P or -C is specified.  (default: true)
179
180
181       -h, --help Print a brief usage message describing only the
182              alsa backend parameters.
183
184
185       -M, --hwmeter
186              Enable hardware metering for devices that support it. Otherwise,
187              use software metering.
188
189
190       -H, --hwmon
191              Enable hardware monitoring of capture ports. This  is  a  method
192              for  obtaining  "zero  latency"  monitoring  of  audio input. It
193              requires support in hardware and from the underlying ALSA device
194              driver.
195
196              When  enabled,  requests to monitor capture ports will be satis‐
197              fied by creating a direct signal path  between  audio  interface
198              input and output connectors, with no processing by the host com‐
199              puter at all. This offers the lowest possible  latency  for  the
200              monitored signal.
201
202              Presently (March 2003), only the RME Hammerfall series and cards
203              based on the ICE1712 chipset (M-Audio  Delta  series,  Terratec,
204              and  others) support --hwmon. In the future, some consumer cards
205              may also be supported by modifying their mixer settings.
206
207              Without --hwmon, port monitoring requires  JACK  to  read  audio
208              into system memory, then copy it back out to the hardware again,
209              imposing  the  basic  JACK  system  latency  determined  by  the
210              --period and --nperiods parameters.
211
212
213       -i, --inchannels int
214              Number  of  capture  channels.   (default:  maximum supported by
215              hardware)
216
217
218       -I, --input-latency
219              Extra input latency (frames).  (default: 0)
220
221
222       -n, --nperiods int
223              Number of periods of playback latency. In seconds,  this  corre‐
224              sponds  to  --nperiods  times  --period  divided  by --rate. The
225              default is 2, the minimum allowed. For most devices, there is no
226              need  for  any  other  value with the --realtime option. Without
227              realtime privileges or with boards providing  unreliable  inter‐
228              rupts  (like ymfpci), a larger value may yield fewer xruns. This
229              can also help if the system is not tuned for  reliable  realtime
230              scheduling.
231
232              For  most ALSA devices, the hardware buffer has exactly --period
233              times --nperiods frames. Some devices demand a larger buffer. If
234              so,  JACK  will  use  the smallest possible buffer containing at
235              least --nperiods, but the playback latency does not increase.
236
237              For USB audio devices it is recommended to use  -n  3.  Firewire
238              devices  supported  by  FFADO  (formerly FreeBoB) are configured
239              with -n 3 by default.
240
241
242       -o, --outchannels int
243              Number of playback channels.   (default:  maximum  supported  by
244              hardware)
245
246
247       -O, --output-latency
248              Extra output latency (frames).  (default: 0)
249
250
251       -P, --playback [ name ]
252              Provide  only  playback  ports,  unless  combined with -D or -C.
253              Optionally set playback device name.
254
255
256       -p, --period int
257              Number of frames between JACK process() calls. This  value  must
258              be  a  power of 2. If you need low latency, set -p as low as you
259              can go without seeing xruns. A larger period size yields  higher
260              latency,  but  makes xruns less likely. The JACK capture latency
261              in seconds is --period divided by --rate.  (default: 1024)
262
263
264       -r, --rate int
265              Sample rate.  (default: 48000)
266
267
268       -S, --shorts
269              Try to configure card for  16-bit  samples  first,  only  trying
270              32-bits if unsuccessful.  (default: 32-bit samples)
271
272
273       -s, --softmode
274              Ignore  xruns  reported by the ALSA driver. This makes JACK less
275              likely to disconnect unresponsive  ports  when  running  without
276              --realtime.
277
278
279       -X, --midi [seq|raw]
280              Which ALSA MIDI system to provide access to. Using raw will pro‐
281              vide a set of JACK MIDI ports that correspond to each  raw  ALSA
282              device on the machine. Using seq will provide a set of JACK MIDI
283              ports that correspond to each  ALSA  "sequencer"  client  (which
284              includes  each  hardware MIDI port on the machine). raw provides
285              slightly better performance but does not permit JACK MIDI commu‐
286              nication with software written to use the ALSA "sequencer" API.
287
288
289
290   COREAUDIO BACKEND PARAMETERS
291       -c, --channels
292              Maximum number of channels.  (default: 2)
293
294
295       -i, --inchannels
296              Maximum number of input channels.  (default: 2)
297
298
299       -o, --outchannels
300              Maximum number of output channels.  (default: 2)
301
302
303       -C, --capture
304              Whether or not to capture.  (default: true)
305
306
307       -P, --playback
308              Whether or not to playback.  (default: true)
309
310
311       -D, --monitor
312              Provide monitor ports for the output.  (default: false)
313
314
315       -D, --duplex
316              Capture and playback.  (default: true)
317
318
319       -r, --rate
320              Sample rate.  (default: 44100)
321
322
323       -p, --period
324              Frames per period, must be a power of 2.  (default: 128)
325
326
327       -d, --device
328              CoreAudio device name.  (default: none)
329
330
331       -I, --input-latency
332              Extra input latency (frames).  (default: 0)
333
334
335       -O, --output-latency
336              Extra output latency (frames).  (default: 0)
337
338
339       -l, --list-devices
340              Display available CoreAudio devices.  (default: false)
341
342
343       -H, --hog
344              Take exclusive access of the audio device.  (default: false)
345
346
347       -L, --async-latency
348              Extra  output latency in asynchronous mode (percent).  (default:
349              100)
350
351
352       -G, --grain
353              Computation grain in RT thread (percent).  (default: 100)
354
355
356       -s, --clock-drift
357              Whether or not to compensate clock drift in dynamically  created
358              aggregate device.  (default: false)
359
360
361
362   DUMMY BACKEND PARAMETERS
363       -C, --capture int
364              Number of capture ports.  (default: 2)
365
366
367       -P, --playback int
368              Number of playback ports.  (default: 2)
369
370
371       -r, --rate int
372              Sample rate.  (default: 48000)
373
374
375       -p, --period int
376              Number  of  frames between JACK process() calls. This value must
377              be a power of 2. If you need low latency, set -p as low  as  you
378              can  go without seeing xruns. A larger period size yields higher
379              latency, but makes xruns less likely. The JACK  capture  latency
380              in seconds is --period divided by --rate.  (default: 1024)
381
382
383       -w, --wait int
384              Number  of  usecs  to  wait between engine processes.  (default:
385              21333)
386
387
388
389   NETONE BACKEND PARAMETERS
390       -i, --audio-ins int
391              Number of capture channels.  (default: 2)
392
393
394       -o, --audio-outs int
395              Number of playback channels.  (default: 2)
396
397
398       -I, --midi-ins int
399              Number of midi capture channels.  (default: 1)
400
401
402       -O, --midi-outs int
403              Number of midi playback channels.  (default: 1)
404
405
406       -r, --rate int
407              Sample rate.  (default: 48000)
408
409
410       -p, --period int
411              Frames per period.  (default: 1024)
412
413
414       -n, --num-periods int
415              Network latency setting in no. of periods.  (default: 5)
416
417
418       -l, --listen-port int
419              The socket port we are listening on for sync packets.  (default:
420              3000)
421
422
423       -f, --factor int
424              Factor for sample rate reduction.  (default: 1)
425
426
427       -u, --upstream-factor int
428              Factor for sample rate reduction on the upstream.  (default: 0)
429
430
431       -c, --celt int
432              Sets  celt  encoding and number of kbits per channel.  (default:
433              0)
434
435
436       -b, --bit-depth int
437              Sample bit-depth (0 for float, 8 for 8bit  and  16  for  16bit).
438              (default: 0)
439
440
441       -t, --transport-sync int
442              Whether  or  not to slave the transport to the master transport.
443              (default: true)
444
445
446       -a, --autoconf int
447              Whether or not to use  Autoconfig,  or  just  start.   (default:
448              true)
449
450
451       -R, --redundancy int
452              Send packets N times.  (default: 1)
453
454
455       -e, --native-endian int
456              Don't convert samples to network byte order.  (default: false)
457
458       -J, --jitterval int
459              Attempted jitterbuffer microseconds on master.  (default: 0)
460
461
462       -D, --always-deadline int
463              Always use deadline.  (default: false)
464
465
466
467   OSS BACKEND PARAMETERS
468       -r, --rate int
469              Sample rate.  (default: 48000)
470
471
472       -p, --period int
473              Number  of  frames between JACK process() calls. This value must
474              be a power of 2. If you need low latency, set -p as low  as  you
475              can  go without seeing xruns. A larger period size yields higher
476              latency, but makes xruns less likely. The JACK  capture  latency
477              in seconds is --period divided by --rate.  (default: 1024)
478
479
480       -n, --nperiods int
481              Number  of periods in the hardware buffer.  The period size (-p)
482              times --nperiods times four is the JACK buffer  size  in  bytes.
483              The  JACK output latency in seconds is --nperiods times --period
484              divided by --rate.  (default: 2)
485
486
487       -w, --wordlength int
488              Sample size in bits.  (default: 16)
489
490
491       -i, --inchannels int
492              Number of capture channels.  (default: 2)
493
494
495       -o, --outchannels int
496              Number of playback channels.  (default: 2)
497
498
499       -C, --capture device_file
500              Input device for capture.  (default: /dev/dsp)
501
502
503       -P, --playback device_file
504              Output device for playback.  (default: /dev/dsp)
505
506
507       -b, --ignorehwbuf boolean
508              Whether or not to ignore hardware period size.  (default: false)
509
510
511       -I, --input-latency
512              Extra input latency (frames).  (default: 0)
513
514
515       -O, --output-latency
516              Extra output latency (frames).  (default: 0)
517
518
519
520   SUN BACKEND PARAMETERS
521       -r, --rate int
522              Sample rate.  (default: 48000)
523
524
525       -p, --period int
526              Number of frames between JACK process() calls. This  value  must
527              be  a  power of 2. If you need low latency, set -p as low as you
528              can go without seeing xruns. A larger period size yields  higher
529              latency,  but  makes xruns less likely. The JACK capture latency
530              in seconds is --period divided by --rate.  (default: 1024)
531
532
533       -n, --nperiods int
534              Number of periods in the hardware buffer.  The period size  (-p)
535              times --nperiods times four (assuming 2 channels 16-bit samples)
536              is the JACK buffer size in bytes.  The JACK  output  latency  in
537              seconds   is   --nperiods  times  --period  divided  by  --rate.
538              (default: 2)
539
540
541       -w, --wordlength int
542              Sample size in bits.  (default: 16)
543
544
545       -i, --inchannels int
546              Number of capture channels.  (default: 2)
547
548
549       -o, --outchannels int
550              Number of playback channels.  (default: 2)
551
552
553       -C, --capture device_file
554              Input device for capture.  (default: /dev/audio)
555
556
557       -P, --playback device_file
558              Output device for playback.  (default: /dev/audio)
559
560
561       -b, --ignorehwbuf boolean
562              Whether or not to ignore hardware period size.  (default: false)
563
564
565
566   PORTAUDIO BACKEND PARAMETERS
567       -c, --channel
568              Maximum number of channels.  (default:  all  available  hardware
569              channels)
570
571
572       -i, --channelin
573              Maximum number of input channels.  (default: all available hard‐
574              ware channels)
575
576
577       -I, --input-latency
578              Extra input latency (frames).  (default: 0)
579
580
581       -o, --channelout
582              Maximum number of  output  channels.   (default:  all  available
583              hardware channels)
584
585
586       -O, --output-latency
587              Extra output latency (frames).  (default: 0)
588
589
590       -C, --capture
591              Whether or not to capture.  (default: true)
592
593
594       -P, --playback
595              Whether or not to playback.  (default: true)
596
597
598       -D, --duplex
599              Capture and playback.  (default: true)
600
601
602       -r, --rate
603              Sample rate.  (default: 48000)
604
605
606       -p, --period
607              Frames per period, must be a power of 2.  (default: 1024)
608
609
610       -n, --name
611              Driver name.  (default: none)
612
613
614       -z, --dither
615              Dithering mode.  (default: none)
616
617
618
619   FIREWIRE BACKEND PARAMETERS
620       -d, --device name
621              The Firewire device name to use. If none is specified, JACK will
622              try to use "hw:0". To get a list of available Firewire  devices,
623              see  ffado-test.  It's recommended to use the GUID of a Firewire
624              device to rule out any ambiguities. Once the GUID of the  device
625              is  known  ("ffado-test  ListDevices"),  it  can  be  used  like
626              -dguid:0xff2584e39b078a2e to tell JACK which interface  to  use.
627              Sometimes  resetting the Firewire bus can help ("ffado-test Bus‐
628              Reset") if there is any problem.  (default: hw:0)
629
630
631       -p, --period int
632              Number of frames between JACK process() calls. This  value  must
633              be  a  power of 2. If you need low latency, set -p as low as you
634              can go without seeing xruns. A larger period size yields  higher
635              latency,  but  makes xruns less likely. The JACK capture latency
636              in seconds is --period divided by --rate.  (default: 1024)
637
638
639       -n, --nperiods int
640              Number of periods of playback latency. Value must be greater  or
641              equal  2.  In  seconds,  this  corresponds  to  --nperiods times
642              --period divided by --rate.  (default: 3)
643
644
645       -r, --rate int
646              Sample rate.  (default: 48000)
647
648
649       -C, --capture [ name ]
650              Provide only capture ports,  unless  combined  with  -D  or  -P.
651              Optionally set capture device name.
652
653
654       -P, --playback [ name ]
655              Provide  only  playback  ports,  unless  combined with -D or -C.
656              Optionally set playback device name.
657
658
659       -D, --duplex
660              Provide both capture and playback  ports.  This  option  is  the
661              default  behaviour  and  can normally be omitted.  -D can not be
662              combined with -P or -C.
663
664
665       -I, --input-latency
666              Extra input latency (frames).  (default: 0)
667
668
669       -O, --output-latency
670              Extra output latency (frames).  (default: 0)
671
672
673       -v, --verbose
674              libffado verbose level.  (default: 3)
675
676
677       -X, --snoop
678              Snoop Firewire traffic.  (default: false)
679
680
681       -h, --help Print a brief usage message describing only the
682              firewire backend parameters.
683
684
685

EXAMPLES

687       Print usage message for the parameters specific to each backend.
688
689
690              jackd -d alsa --help
691              jackd -d coreaudio --help
692              jackd -d net --help
693              jackd -d dummy --help
694              jackd -d firewire --help
695              jackd -d oss --help
696              jackd -d sun --help
697              jackd -d portaudio --help
698
699       Run the JACK daemon with realtime priority using the first  ALSA  hard‐
700       ware card defined in /etc/modules.conf.
701
702
703              jackstart --realtime --driver=alsa
704
705       Run  the  JACK daemon with low latency giving verbose output, which can
706       be helpful for trouble-shooting system latency problems.  A  reasonably
707       well-tuned  system  with a good sound card and a low-latency kernel can
708       handle these values reliably. Some can do better. If you get xrun  mes‐
709       sages,  try  a  larger  buffer.  Tuning a system for low latency can be
710       challenging. Please consult the JACK FAQ for more suggestions.
711
712
713              jackstart -Rv -d alsa -p 128 -n 2 -r 44100
714
715       Run jackd with realtime priority using the "sblive" ALSA device defined
716       in ~/.asoundrc. Apply shaped dithering to playback audio.
717
718
719              jackd -R -d alsa -d sblive --dither=shaped
720
721       Run  jackd  with  no  special privileges using the second ALSA hardware
722       card defined in /etc/modules.conf. Any xruns reported by the ALSA back‐
723       end  will be ignored. The larger buffer helps reduce data loss. Rectan‐
724       gular dithering will be used for playback.
725
726
727              jackd -d alsa -d hw:1 -p2048 -n3 --softmode -zr
728
729       Run jackd in full-duplex mode using the ALSA hw:0,0 device for playback
730       and the hw:0,2 device for capture.
731
732
733              jackd -d alsa -P hw:0,0 -C hw:0,2
734
735       Run jackd in playback-only mode using the ALSA hw:0,0 device.
736
737
738              jackd -d alsa -P hw:0,0
739
740
741

ENVIRONMENT

743       JACK is evolving a mechanism for automatically starting the server when
744       needed. Any client started without a running JACK server  will  attempt
745       to  start  one itself using the command line found in the first line of
746       $HOME/.jackdrc if it exists, or /etc/jackdrc if it does not. If neither
747       file  exists, a built-in default command will be used, including the -T
748       flag, which causes the server  to  shut  down  when  all  clients  have
749       exited.
750
751       As  a  transition, this only happens when $JACK_START_SERVER is defined
752       in the environment of the calling process.  In  the  future  this  will
753       become  normal behavior. In either case, defining $JACK_NO_START_SERVER
754       disables this feature.
755
756       To  change  where   JACK   looks   for   the   backend   drivers,   set
757       $JACK_DRIVER_DIR.
758
759       $JACK_DEFAULT_SERVER specifies the default server name. If not defined,
760       the string "default" is used. If set in their respective  environments,
761       this  affects  jackd  unless  its --name parameter is set, and all JACK
762       clients unless they pass an explicit name to jack_client_open().
763
764       Defining $JACK_NO_AUDIO_RESERVATION will bypass audio  device  reserva‐
765       tion  via  session  bus (DBus). This can be useful if JACK was compiled
766       with DBus support but should run on a headless system.
767
768       $JACK_PROMISCUOUS_SERVER enables an alternate way of handling the vari‐
769       ous shared resources (Unix sockets, semaphores, ...). In this mode, the
770       generated names will not contain the user id anymore, and  the  permis‐
771       sions of those resources will be relaxed, allowing clients from differ‐
772       ent users to talk with the same server.  Moreover,  on  platforms  that
773       support  it  (all POSIX variants), if set to a valid Unix group name or
774       id, the permissions will be restricted to that group, so  only  members
775       of  that group will be able to launch clients that talk to this server.
776       Important note: it must be set with the same value for both server  and
777       clients to work as expected.
778
779

SEE ALSO:

781       <http://www.jackaudio.org/>
782       The official JACK website with news, docs and a list of JACK clients.
783
784       <http://www.github.com/jackaudio/>
785       The official JACK github code repository. Pull requests are welcome.
786
787       <http://lists.jackaudio.org/listinfo.cgi/jack-devel-jackaudio.org>
788       The  JACK  developers' mailing list. Subscribe to take part in develop‐
789       ment of JACK or JACK clients. User questions are also welcome, there is
790       no user-specific mailing list.
791
792       <http://www.jackosx.com/>
793       Tools specific to the Mac OS X version of JACK.
794
795       <http://www.alsa-project.org/>
796       The Advanced Linux Sound Architecture.
797
798       <http://www.ffado.org/>
799       The Free Firewire Audio Drivers (FFADO) Site.
800
801       <irc.freenode.net#jack>
802       Join the JACK community with your favourite IRC client.
803
804
805

BUGS

807       Please report bugs as issues to the corresponding repository:
808       <http://www.github.com/jackaudio/>
809
810
811

AUTHORS

813       Architect and original implementer: Paul Davis
814
815       Original  design  group: Paul Davis, David Olofson, Kai Vehmanen, Benno
816       Sennoner, Richard Guenther and other members of the Linux Audio  Devel‐
817       opers group.
818
819       Programming:  Paul  Davis,  Jack  O'Quin, Taybin Rutkin, Stéphane Letz,
820       Fernando Pablo Lopez-Lezcano, Steve Harris, Jeremy  Hall,  Andy  Wingo,
821       Kai  Vehmanen,  Melanie  Thielker, Jussi Laako, Tilman Linneweh, Johnny
822       Petrantoni, Torben Hohn.
823
824       Manpage written by Stefan Schwandter, Jack O'Quin, Alexandre Prokoudine
825       and Thomas Brand.
826
827       Create a PDF file from this manpage:
828
829              man -t jackd | ps2pdf - > jackd.pdf
830
831
832
8331.9.14                            August 2020                         JACKD(1)
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