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I would like to redirect the output of a command to input of mapfile. I'm doing this and it's working:

xls2csv -x $files -W -q | sed '/^$/d' | grep -v '^The' > lista.txt
mapfile -t titulos < lista.txt

I'm trying to use just one command to achieve this. But none of them are working.

xls2csv -x $files -W -q | sed '/^$/d' | grep -v '^The' > mapfile -t titulos
xls2csv -x $files -W -q | sed '/^$/d' | grep -v '^The' | mapfile -t titulos
mapfile -t titulos < <( xls2csv -x $files -W -q | sed '/^$/d' | grep -v '^The' )
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    The first creates a file called mapfile, the second loses the variable to a subshell (via the pipe); the third looks reasonable to me, though – Jeff Schaller Oct 23 '16 at 14:20
  • @JeffSchaller the third one gives the error "/dev/fd/62: No such file or directory" – marlindo71 Oct 23 '16 at 14:33
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    Try to export files before execute <(). Secondary you can avoid sed -q | grep -ve '^The' -e '^$' ) – Costas Oct 23 '16 at 15:35

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