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I'm using a bash script. I have a tab delimited file with data that looks like

Afghanistan     AF      AFG     004
ALA     Aland Islands   AX      ALA     248
Albania AL      ALB     008
Algeria DZ      DZA     012

I want to rewrite the data like so

AF=AFG
AX=ALA
AL=ALB
DZ=DZA

which boils down to extracting the third to last token, writing an equals, and then printing the second to last token. I thought "awk" could help me, but I don't know how to say "second to last". This doesn't cut it

awk '{print $2=$3}' /tmp/country_data.tsv 

How can I extract the data in the way I want?

2

awk '{printf "%s=%s\n", $(NF-2),$(NF-1)}' file

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