Generate delete commands for old versions of lambdas

generate-lambda-version-delete-commands.sh

# Generate a bunch of commands to delete all versions of 
# lambdas with a given LAMBA_PREFIX
# 
# this script generates `delete-commands.sh` which you can
# inspect first before running. this is super dangerous so
# you probably should not use this script.

LAMBDA_PREFIX=example-lambda-group-name

for FUNCTION in $(aws lambda list-functions --region=us-east-1  \
  | jq -r '.Functions[].FunctionName' \
  | grep $LAMBDA_PREFIX)
do
  echo 
  echo \# ------------------------
  echo \# $FUNCTION 
  echo \# ------------------------
  echo 
  for VERSION in $(aws lambda list-versions-by-function  \
    --function-name=$FUNCTION \
    --region=us-east-1 \
    | jq -r '.Versions[].FunctionArn')
  do
    if [[ "$VERSION" == *LATEST ]]
    then
      echo \# skipping $VERSION
      continue
    fi
    echo aws lambda delete-function --region=us-east-1 \
    --function-name $VERSION
  done
done > delete-commands.sh