How to pass bash variables to awk script

Question

# My vars index=test type=book

I'm trying to pass these variables to awk

 awk -v index="$index" -v type="$type" 'BEGIN{print "{\"create\": {\"_index\":\"index\", \"_type\":\"type\"}}"}; {print}; END {printf "\n"}'

Desired output

{"create": {"_index":"test", "_type":"book"}}

Ed Morton · Accepted Answer · 2016-04-21 10:30:48Z

Don't embed the variables in the string:

awk -v idx="$index" -v type="$type" 'BEGIN{print "{\"create\": {\"_index\":\"" idx "\", \"_type\":\"" type "\"}}"} {print} END {print ""}'

You can't use index as an awk variable name, btw, as that's the name of an awk function.

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