command line - getting the desirable output with gawk/awk

i run following command:

aws ec2 describe-instances --filters "name=ip-address,values=my_ip" | grep instanceid

and get:

"instanceid": "i-b0f13081",

how can following:

i-b0f13081

this tried:

 aws ec2 describe-instances --filters "name=ip-address,values=my_ip" | grep instanceid | gawk -f: '{ print $2 }'   "i-b0f13081",

awk:

set " field delimiter, , 4th field:

% awk -f'"' '{print $4}' <<<'"instanceid": "i-b0f13081",' i-b0f13081

similarly cut:

% cut -d'"' -f4 <<<'"instanceid": "i-b0f13081",' i-b0f13081

grep pcre (-p):

% grep -po ':\s*"\k[^"]+' <<<'"instanceid": "i-b0f13081",' i-b0f13081

shell parameter expansion:

% var='"instanceid": "i-b0f13081",' % var="${var%\"*}" % echo "${var##*\"}" i-b0f13081

sed:

% sed -e 's/^[^:]+:[^"]+"([^"]+).*/\1/' <<<'"instanceid": "i-b0f13081",' i-b0f13081

perl:

% perl -pe 's/^[^:]+:[^"]+"([^"]+).*/$1/' <<<'"instanceid": "i-b0f13081",' i-b0f13081

python:

% python -c 'import sys; print sys.stdin.read().split("\"")[3]' <<<'"instanceid": "i-b0f13081",' i-b0f13081

Primitatvve