If you have a gazillion SPNs for azure CLI...

az-spn.sh

#!/bin/bash
# az-spn

tenant='tenant id' # in my use case I have a single tenant

declare -A dic
dic['joes dev sub']='subscription name or id'
dic['joes dev id']='SPN ID'
dic['joes dev pass']='SPN password'

dic['joes prod sub']='subscription name or id'
dic['joes prod id']='SPN ID'
dic['joes prod pass']='SPN password'

dic['anotercorp dev sub']='subscription name or id'
dic['anotercorp dev id']='SPN ID'
dic['anotercorp dev pass']='SPN password'

dic['anotercorp prod sub']='subscription name or id'
dic['anotercorp prod id']='SPN ID'
dic['anotercorp prod pass']='SPN password'



action=$1
customer=$2
stage=$3


case $action in
	login )
		az login  --service-principal -t $tenant -u "${dic[$customer\ $stage\ id]}" -p "${dic[$customer\ $stage\ pass]}" 
		;;
	set )
		az account set -s "${dic[$customer\ $stage\ sub]}"
		az account list
		;;
	logout )
		az account set -s "${dic[$customer\ $stage\ sub]}"
		az logout
		;;
	help )
		echo 'usage:' $0 '{account name} {dev|prod} {login|set|logout}'
		;;
esac