parcat - cat files or fifos in parallel

       Copyright (C) 2016-2024 Ole Tange, http://ole.tange.dk and Free Software Foundation, Inc.

       GNU parcat uses Perl.

       GNU parcat reads files or fifos in parallel. It writes full lines so there will be no problem with mixed-
       half-lines which you risk if you use:

          (cat file1 & cat file2 &) | ...

       It is faster than doing:

          parallel -j0 --lb cat ::: file*

       Arguments can be given on the command line or passed in on stdin (standard input).

Simplelinebufferedoutputtraceroute will often print half a line. If run in  parallel,  two  instances  may  half-lines  of  their
       output. This can be avoided by saving the output to a fifo and then using parcat to read the two fifos in
       parallel:

         mkfifo freenetproject.org.fifo tange.dk.fifo
         traceroute freenetproject.org > freenetproject.org.fifo &
         traceroute tange.dk > tange.dk.fifo &
         parcat --rm *fifo

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       parcat - cat files or fifos in parallel

       -#       Arguments following this will be sent to the file descriptor #. E.g.

                  parcat -1 stdout1 stdout2 -2 stderr1 stderr2

                will  send stdout1 and stdout2 to stdout (standard output = file descriptor 1), and send stderr1
                and stderr2 to stderr (standard error = file descriptor 2).

       --rm     Remove files after opening. As soon as the files are opened, unlink the files.

       GNU parcat is part of GNU parallel. Report bugs to <bug-parallel@gnu.org>.

cat(1), parallel(1)

20240222                                           2024-03-22                                          PARCAT(1)

parcat [--rm] [-#] file(s) [-#] file(s)