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Top Forums Shell Programming and Scripting While loop is not reading next line in the file when IF condition is used. Post 302600003 by agama on Sunday 19th of February 2012 10:39:08 PM
Old 02-19-2012
A while loop with redirection or piped input reads from stdin. Ssh by default also reads stdin and ends up reading the remainder of the data intended for the while.

Add -n to your ssh command to prevent it from reading from stdin.

Last edited by agama; 02-19-2012 at 11:40 PM.. Reason: clairity
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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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