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PARCAT(1) parallel PARCAT(1)


parcat - cat files or fifos in parallel


parcat file(s)


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 &) | ...


Do be done

  mkfifo slot-{1..5}-digit-{0..9}
  parallel -j5 'seq 100000 | grep {} > slot-{%}-digit-{}' ::: {0..9} &
  parallel parcat slot-{1..5}-digit-{} '>' digit-{} ::: {0..9}


GNU parcat is part of GNU parallel. Report bugs to <>.


Copyright (C) 2016 Ole Tange, and Free Software Foundation, Inc.


Copyright (C) 2007,2008,2009,2010,2011 Free Software Foundation, Inc.

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GNU parcat uses Perl.


cat(1), parallel(1)

2018-12-01 20161222