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Full Discussion: Delete line from remote file over ssh passing variable
Top Forums Shell Programming and Scripting Delete line from remote file over ssh passing variable Post 303041097 by MadeInGermany on Thursday 14th of November 2019 03:41:20 PM
Old 11-14-2019
The echo $a1 | ssh ... redirects stdin - but nothing reads from it.
You can just redirect stdin with </dev/null ssh ... or close stdin with ssh -n ...; that should have the same effect and not confuse anybody.
This User Gave Thanks to MadeInGermany For This Post:
RudiC
 

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LEARN ABOUT DEBIAN

jack-stdin

JACK-STDIN(1)						      General Commands Manual						     JACK-STDIN(1)

NAME

       jack-stdin - write JACK audio data to stdin

SYNOPSIS

       jack-stdin [OPTIONS] port1 [ port2 ...]

DESCRIPTION

       jack-stdin reads raw audio data from standard-input and writes it to a JACK audio port.

       The  number  of given ports detemine the number of audio channels that are used.  If more than one channel is given, the input audio-sample
       data needs to be interleaved.

OPTIONS

       -b, --bitdepth BITS
	      Specify the bit-depth of each sample. For integer-encoding this can be 16 or 24.	The default is 16.  This setting is only used  for
	      integer encoding: Floating-point samples will always be 32 bit wide.

       -d, --duration SEC
	      Specify  the time for which jack-stdin should run in seconds.  A value less than 1 means to run indefinitely. The default is 0 which
	      reads until end-of-file.

       -e, --encoding FORMAT
	      Set the input format of the data: signed-integer, unsigned-integer, floating-point (default: signed)

       -f, --file FILENAME
	      Read data from given file instead of standard-input.

       -h, --help
	      Print a brief usage information

       -p, --prebuffer PERCENT
	      Pre-fill the buffer before starting audio output to JACK (default 50.0%).  NOTE: disable pre-buffering (-p 0) or use a small  buffer
	      size to play back very short samples.

       -L, --little-endian
	      The input-data is in little-endian byte-order or native-byte-order float (this is the default)

       -B, --big-endian
	      Interpret input audio data in big-endian byte-order or swap the byte-order of floating-point.

       -q, --quiet
	      Inhibit usual output.  This affects information and buffer-overflow warnings but not setup-errors.

       -S, --bufsize SAMPLES
	      Choose the internal buffer-size in samples. The default size is 65536.  The given value will be multiplied by the number of channels
	      and bit-depth to get the size of the ring-buffer.  Note: the buffersize must be larger than JACK's period size.

EXAMPLES

	 jack-stdout vlc_31994:out_1 vlc_31994:out_2 
	    | sox -t raw -r 48k -e signed -b 16 -c 2 - 
		  -t raw -r 48k -e signed -b 16 -c 2 - 
	       tremolo 5 100 
	    | ./jack-stdin system:playback_1 system:playback_2

	 cat /dev/dsp 
	    | jack-stdin system:playback_1 system:playback_2

KNOWN ISSUES

       jack-stdin is not suitable to play-back files shorter than twice the jack-period size.

AUTHOR

       Robin Gareus <robin@gareus.org>.

SEE ALSO

       http://jackaudio.org/,

								   30 March 2011						     JACK-STDIN(1)
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