Need help in finding pools with only only one pool member

I would start with:

From cil - in bash...

tmsh list ltm pool all members

and start my filter with

 tmsh list ltm pool all members |egrep 'ltm pool|address' 

if you dont need/use  ipv6

tmsh list ltm pool all members |egrep 'ltm pool|address' |egrep -v 'any6'

that should get you close

You can achieve this using a simple bash script. For example:

# Author: Michael Saleem
# Filename: f5-list-pools-based-on-member-quantity.sh
# Purpose:  This script will list all pools containing a specified number of pool members

#!/bin/bash

POOL_MEMBER_QUANTITY=1

POOLS=$(tmsh list ltm pool one-line | awk '{print $3}')

for POOL in $POOLS; do
POOL_MEMBER_COUNT=$(tmsh list ltm pool $POOL one-line | awk -F':' '{print NF -1}';)

if [ "$POOL_MEMBER_COUNT" = "$POOL_MEMBER_QUANTITY" ]
    then echo $POOL
fi
done