Splitting command line args with GNU parallel
You are probably looking for --colsep.
generate_file_pairs | parallel --colsep ' ' ./prog {1} {2} Read man parallel for more. And watch the intro video if you have not already done so http://www.youtube.com/watch?v=OpaiGYxkSuQ
You are looking for -n option of parallel. This is what you are looking for:
./generate_file_pairs | parallel -n 2 ./prog {}Excerpt from GNU Parallel Doc:
-n max-args Use at most max-args arguments per command line. Fewer than max-args arguments will be used if the size (see the -s option) is exceeded, unless the -x option is given, in which case GNU parallel will exit.
In Parallel's manual, it is said:
If no command is given, the line of input is executed ... GNU parallel can often be used as a substitute for xargs or cat | bash.
So take a try of:
generate command | parallelTry to understand the output of this:
for i in {1..5};do echo "echo $i";done | parallel