Text fix for error strings in last login check

if WARN then write WARN instead of OK.
Add day numbers if OK

Some minor shellscript updates

bin/check_last_login.sh

@@ -4,7 +4,7 @@
 # if user login >30days, remoe user from sshallow group and write log
 
 # base folder
-BASE_FOLDER=$(dirname $(readlink -f $0))"/";
+BASE_FOLDER=$(dirname "$(readlink -f "$0")")"/";
 # which groups holds the ssh allowed login users (outside of admin users)
 ssh_groups=('sshforward' 'sshallow' 'sshreject');
 ssh_reject_group='sshreject';
@@ -68,7 +68,7 @@ esac;
 
 # collect info via: curl http://169.254.169.254/latest/meta-data/
 instance_data=$(
-	TOKEN=`curl -s -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600"` &&
+	TOKEN=$(curl -s -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600") &&
 	curl -s -H "X-aws-ec2-metadata-token: $TOKEN" http://169.254.169.254/latest/dynamic/instance-identity/document
 )
 instance_id=$(echo "${instance_data}" | jq .instanceId)
@@ -76,14 +76,14 @@ account_id=$(echo "${instance_data}" | jq .accountId)
 region=$(echo "${instance_data}" | jq .region)
 
 if [ "${OUTPUT_TARGET}" = "text" ]; then
-	LOG="${LOG}/check_ssh_user."$(date +"%F_%H%m%S")".log";
+	LOG="${LOG}/check_ssh_user.$(date +"%F_%H%m%S").log";
 	exec &> >(tee -a "${LOG}");
 	echo "[START] =============>";
 	echo "AWS ID             : ${account_id}";
 	echo "Region             : ${region}";
 	echo "Instance ID        : ${instance_id}";
-	echo "Hostname           : "$(hostname);
+	echo "Hostname           : $(hostname)";
-	echo "Run date           : "$(date +"%F %T");
+	echo "Run date           : $(date +"%F %T")";
 	echo "Max age last login : ${max_age_login} days";
 	echo "Warn age last login: ${warn_age_login} days";
 	echo "Max age no login   : ${max_age_create} days";
@@ -197,7 +197,7 @@ for ssh_group in ${ssh_groups[@]}; do
 			found=$(grep "${username};" "${AUTH_LOG}");
 		fi;
 		# always pre work account dates if they exist, but output only if text
-		if [ ! -z "${user_create_date_string}" ]; then
+		if [ -n "${user_create_date_string}" ]; then
 			user_create_date=$(echo "${user_create_date_string}" | date +"%s" -f -);
 			# if all empty, we continue with only check if user has last login date
 			# else get days since creation
@@ -205,24 +205,24 @@ for ssh_group in ${ssh_groups[@]}; do
 			account_age=$(awk '{printf("%.0f\n",($1-$2)/$3)}' <<<"${now} ${user_create_date} ${day}");
 			user_create_date_out=$(echo "${user_create_date_string}" | date +"%F" -f -);
 		fi;
-		if [ ! -z "${found}" ]; then
+		if [ -n "${found}" ]; then
 			last_login_date_string=$(grep "${username};" "${AUTH_LOG}" | cut -d ";" -f 2);
-			last_login_date=$(echo "${last_login_date}" | date +"%s" -f -);
+			last_login_date=$(echo "${last_login_date_string}" | date +"%s" -f -);
 			last_login=$(awk '{printf("%.0f\n",($1-$2)/$3)}' <<<"${now} ${last_login_date} ${day}");
 			if [ ${last_login} -gt ${max_age_login} ]; then
-				out_string="[!] last ssh log in ${last_login} days ago";
+				out_string="[!] Last ssh log in ${last_login} days ago";
 				if [ "${ssh_group}" != "${ssh_reject_group}" ]; then
 					lock_user=1;
 				fi;
 			elif [ ${last_login} -gt ${warn_age_login} ]; then
-				out_string="OK [last ssh login ${last_login} days ago]";
+				out_string="WARN [last ssh login ${last_login} days ago]";
 			else
-				out_string="OK [ssh]";
+				out_string="OK [ssh, ${last_login} days ago]";
 			fi;
 			login_source="ssh";
 			# rewrite to Y-M-D, aka
 			last_login_date="${last_login_date_string}"
-		elif [ ! -z "${last_login_string##*$search*}" ]; then
+		elif [ -n "${last_login_string##*$search*}" ]; then
 			# if we have "** Never logged in**" the user never logged in
 			# find \w{3} \w{3} [\s\d]{2} \d{2}:\d{2}:\d{2} \+\d{4} \d{4}
 			# awk '{for(i=4;i<=NF;++i)printf $i FS}'
@@ -230,25 +230,25 @@ for ssh_group in ${ssh_groups[@]}; do
 			# date -d "Wed Nov  2 09:40:35 +0900 2022" +%s
 			last_login=$(awk '{printf("%.0f\n",($1-$2)/$3)}' <<<"${now} ${last_login_date} ${day}");
 			if [ ${last_login} -gt ${max_age_login} ]; then
-				out_string="[!] last terminal log in ${last_login} days ago";
+				out_string="[!] Last terminal log in ${last_login} days ago";
 				if [ "${ssh_group}" != "${ssh_reject_group}" ]; then
 					lock_user=1;
 				fi;
 			elif [ ${last_login} -gt ${warn_age_login} ]; then
-				out_string="OK [last terminal login ${last_login} days ago]";
+				out_string="WARN [last terminal login ${last_login} days ago]";
 			else
-				out_string="OK [lastlog]";
+				out_string="OK [lastlog, ${last_login} days ago]";
 			fi;
 			login_source="lastlog";
 			last_login_date=$(echo "${last_login_string}" | awk '{for(i=4;i<=NF;++i)printf $i FS}' | date +"%F %T" -f -)
-		elif [ ! -z "${user_create_date}" ]; then
+		elif [ -n "${user_create_date}" ]; then
 			if [ ${account_age} -gt ${max_age_create} ]; then
 				out_string="[!] Never logged in: account created ${account_age} days ago";
 				if [ "${ssh_group}" != "${ssh_reject_group}" ]; then
 					lock_user=1;
 				fi;
 			else
-				out_string="OK [Never logged in]";
+				out_string="OK [Never logged in, created ${account_age} days ago]";
 			fi;
 			never_logged_in="true";
 		else
@@ -295,13 +295,13 @@ for ssh_group in ${ssh_groups[@]}; do
 	done;
 done;
 if [ "${OUTPUT_TARGET}" = "text" ]; then
-	if [ ! -z "${lock_accounts}" ]; then
+	if [ -n "${lock_accounts}" ]; then
 		echo "--------------------->"
 		echo "% Run script below to move users to reject ssh group";
 		echo "";
 		echo "bin/lock_user.sh ${lock_accounts}";
 	fi;
-	if [ ! -z "${unlock_accounts}" ]; then
+	if [ -n "${unlock_accounts}" ]; then
 		echo "--------------------->"
 		echo "% Run script below to move users to allow or forward ssh group";
 		echo "";