odroidxu4 изменяет uart2 по умолчанию на uart0

Вы можете сделать это с помощью GNU dcследующим образом:

< new_file.txt tr -- - _ | dc -e "[q]sq [?z1=qrd1<qrn32anp0.005+dd=?]s? 0l?x"

Объяснение:

dc -e '
# macro for quitting
[q]sq

# macro to read next line and perform operations
[
   ? z1=q  # read next line and quit when it is empty. The 1 is apriori
   r       # else, reverse the stack elements so that sum is top of stack now
   d1<q    # quit if current sum is more than 1
   r       # else, reverse the stack elements so that line is top of stack now
   n 32an p # print the line, space (32a is ascii decimal for space), & print current sum
   0.005+   # update the current sum for next round
   dd=?     # recursively invoke itself for more.... its a loop essentially
]s?

# initialize stack and start operations
0 l?x
'