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    Remove spaces around = Commented Sep 15, 2019 at 5:34
  • @muru it worked. would you like to turn it into an answer so i can accept it? Commented Sep 15, 2019 at 5:36
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    Why not do the whole thing in awk? Commented Sep 15, 2019 at 7:16
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    @Kusalananda, $ is an operator like any other in awk, there's no problem having spaces around it, not any more than around + or *. Commented Sep 15, 2019 at 8:59
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    awk is a tool designed for text processing and with associative array support and is much more efficient at it than a shell. So, unless you need to run some commands on the elements of that associative array (a shell is the tool to run other commands, awk does invoke a shell to run other commands for instance), it would make more sense to use awk. Commented Sep 15, 2019 at 9:01