peet - piped reverse tee: read from many file descriptors and copy to one

       Written by Andreas Florath (andreas@florath.net)

       Copyright © 2015,2023 by Andreas Florath (andreas@florath.net).  License GPLv2+: GNU  GPL  version  2  or
       later <http://gnu.org/licenses/gpl.html>.

User Commands                                      2023-03-27                                            peet(1)

peet  reads  from  many  file  descriptors  and  copies  everything  to  one file descriptor.  If no file
       descriptor is given ('-w' option), 1 (stdout) is used.

       peet without the -b option reads the data which is available on each fd and writes it out to  the  output
       file  descriptor. For each input fd one read is executed. This reads maximum 4096 bytes at once. For each
       read one write is executed.  This means that the output data might  be  scattered  randomly  between  the
       different input streams.

       When  the  -b  option  is specified, the number is seen as bytes in a block.  A write is executed only of
       complete blocks on the input buffer.

       peet can be used with pipexec(1) to de-multiplex text based output.

       Read from stdin (fd 0), and file descriptors 9 and 11 and write to stdout.
           peet 0 9 11

       Using  pipexec(1):  start  two  commands,  both  write  their  log  to  stdout  and  use  one instance of
       rotatelogs(1) to write the logs to disk into a common log file: (The file descriptors 8 and 11 are chosen
       by random.)
           pipexec [ CMD1 /usr/bin/cmd1 ] [ CMD2 /usr/bin/cmd2 ] \
             [ PEET /usr/bin/peet 8 11 ] \
             [ RLOGS /usr/bin/rotatelogs /var/log/%Y%m%d_cmd.log ] \
             "{CMD1:1>PEET:8}" "{CMD2:1>PEET:11}" \
             "{PEET:1>RLOGS:0}"

       peet - piped reverse tee: read from many file descriptors and copy to one

-h     print help and version information

       -bnum Reads always num bytes before writing them.

       -woutfd
              use the given outfd as output file descriptor.  If this option is not  specified,  1  (stdout)  is
              used.

pipexec(1),peet(1),rotatelogs(1),tee(1)

       peet [-h] [-b size] [-w outfd] infd1 [infd2 ...]