Provided by: vbuf_0.5.1-5.1_amd64 bug

NAME

       vbuf - Virtual Ring Buffer shell interface

SYNOPSIS

       vbuf [options]

DESCRIPTION

       This manual page documents briefly the vbuf command.

       vbuf  is a program to glue two programs (a producer and a consumer) together, one of which
       not being able to fulfil the other's constant data rate requirements.

OPTIONS

       -h
              Show short help message.

       --help
              Show long help message.

       -p, --progress
              Show progress status line.

       -q, --quiet
              Suppress progress status line.  The default is to show the progress display.

       -s size, --size=size
              Set buffer size in bytes.  Suffixes k, m, and g may be used.  The actual size  used
              will  be rounded up for system mapping requirements.  The default is 1m, or 1048576
              bytes.

       -t time, --time=seconds
              Set time in seconds between progress display refreshes.  Fractions of a second  may
              be used.  Default is 1.500000 seconds.

       -b, --bits
              Set progress rate display units to bits per second.

       -B, --bytes
              Set progress rate display units to bytes per second.  The default is bytes.

       -d, --decimal
              Set progress rate display base to decimal.  The default is decimal.

       -x, --hexadecimal
              Set progress rate display base to hexadecimal.

       --octal
              Set progress rate display base to octal.

       -i file, --input=file
              Specify an input file to be opened and used instead of using stdin.

       -o file, --output=file
              Specify an output file to be opened and used instead of using stdout.

       -M file, --mapfile=file
              Specify  a  file  which will be used for backing store for the virtual ring buffer.
              The allows using filesystem space in case swap space is full.

       -r bytes, --read-min=bytes
              Specify the minimum number of bytes to be requested  by  read.   Reading  will  not
              happen unless at least this much buffer space is available.  The default is 1.

       -R bytes, --read-max=bytes
              Specify  the  maximum  number  of  bytes to be requested by read.  Reading will not
              request more even if more buffer space is  available.   The  default  is  the  full
              buffer size.

       -w bytes, --write-min=bytes
              Specify the minumum number of bytes to be written.  Writing will not be done unless
              at least this much data is available.  Once end of file  is  reached  on  input,  a
              smaller amount may be written.  The default is 1.

       -W bytes, --write-max=bytes
              Specify  the  maximum  number  of bytes to be written.  Writing will not write more
              each time even if more data is available in the buffer.  The default  is  the  full
              buffer size.

AUTHOR

       VRB and vbuf were written by Phil Howard <vrb@ipal.org>.

       This  manual page was written by Szekelyi Szabolcs <cc@mail.3d.hu>, for the Debian project
       (but may be used by others).

                                            2006 Sep 5                                    VBUF(1)