Removes cloudwatch loggroups that contain a given search string using aws-cli

remove-loggroups.sh

#!/usr/bin/env bash
#title          : remove-loggroups.sh
#description    : Removes cloudwatch loggroups that contain a given search string using aws-cli
#author         : Christian-André Giehl <[email protected]>
#date           : 20200312
#version        : 1.0
#usage          : sh remove-loggroups.sh <search-string>
#==============================================================================

# Exits in case the supplied state is != 0. State is typically supplied via $?
exitOnError() {
	state=$1
	msg=$2
	if [ $state -ne 0 ]; then
		echo "!!! ${msg}"
		echo "### Exiting."
		exit $state
	fi
}

confirmPrompt() {
    if [ ! -z "${HEADLESS}" ]; then
        echo "Headless! Auto-confirmed!"
        return 0
    fi
    read -p "-----> DO YOU WANT TO ${1}? [Yy]es " -n 1 -r </dev/tty
    if [[ $REPLY =~ ^[Yy]$ ]]
    then
        return 0
    fi
    return 1
}

printUsage() {
    echo "!!! Please specify exactly 1 arg! !!!"
    echo "  Usage: sh remove-loggroups.sh <search-string>"
    echo "  with:"
    echo "    <search-string>         a string that all your search groups are grepped for"
}

if [ $# -ne 1 ]; then
    printUsage
    exit 1
fi

SEARCH_STRING=$1
REGION=eu-central-1

for loggroup in $(aws logs describe-log-groups --output table --region ${REGION}|awk '{print $6}'|grep ${SEARCH_STRING})
do
    echo "Removing log group '${loggroup}'..."

    confirmPrompt "remove loggroup '${loggroup}'"
    exitOnError $? "!!! ABORTED !!!"
    aws logs delete-log-group --log-group-name ${loggroup}
done