Read JSON data in a shell script

Similarly using Bash regexp. Shall be able to snatch any key/value pair.

key="Body"
re="\"($key)\": \"([^\"]*)\""

while read -r l; do
    if [[ $l =~ $re ]]; then
        name="${BASH_REMATCH[1]}"
        value="${BASH_REMATCH[2]}"
        echo "$name=$value"
    else
        echo "No match"
    fi
done

Regular expression can be tuned to match multiple spaces/tabs or newline(s). Wouldn't work if value has embedded ". This is an illustration. Better to use some "industrial" parser :)

There is jq for parsing json on the command line:

 jq '.Body'

Visit this for jq: https://stedolan.github.io/jq/

tl;dr

$ cat /tmp/so.json | underscore select '.Messages .Body' 
["172.16.1.42|/home/480/1234/5-12-2013/1234.toSort"]

Javascript CLI tools

You can use Javascript CLI tools like

• underscore-cli:
• json:select(): CSS-like selectors for JSON.

Example

Select all name children of a addons:

underscore select ".addons > .name"

The underscore-cli provide others real world examples as well as the json:select() doc.