Example of how I use jq to parse some json for script commands and details

run.sh

#!/bin/sh

############
#
# Functions
#
###########

function exit_with_help {
    echo \
    " 
    +-------+------+--------------+
    | name  | flag | help         |
    +-------+------+--------------+
    | clean | c    | docker prune |
    | test  | t    | test flag    |
    | help  | h:   | get help     |
    +-------+------+--------------+
    "
    echo "Usage: $(basename $0) [-a] [-t] [-h argument]"
    exit 1
}

function start {
    docker-compose up 
}

function up_no_cache {
   docker-compose up  --build --force-recreate
}

############
#
# Iput / Startup
#
###########

export DOCKER_BUILDKIT=1 
export COMPOSE_DOCKER_CLI_BUILD=1

CPWD=$_

OPTIONS='{"root": [
    {"name":"clean", "flag":"c", "help":"docker prune"},
    {"name":"test", "flag":"t", "help":"test flag"},
    {"name":"help", "flag":"h:", "help":"get help"}
]}'

JOP=$(echo $OPTIONS | jq -c -r '.root[].flag' | tr -d "\"" | tr -d "\n" )
DARGS=""

while getopts $JOP OPTION; do
    HASOPS=true
    echo "no ops"
    case "$OPTION" in
        c)
            echo $?
            ;;
        h)
            helpArg="$OPTARG"
            echo $OPTIONS | jq --arg helpArg "$helpArg" '.root[] | select (.flag == $helpArg).help'
            ;;
        t)
            ;;
        ?)
            echo "helo"
            exit_with_help
            ;;
  esac
done
    
if [[ -z $HASOPS ]]
then
    start
fi