use curly braces around loop variables

postgres-appliance/scripts/post_init.sh

@@ -149,25 +149,25 @@ fi
 # Sunday could be 0 or 7 depending on the format, we just create both
 for i in $(seq 0 7); do
     if [ "$LOG_SHIP_HOURLY" != true ]; then
-        echo "CREATE FOREIGN TABLE IF NOT EXISTS public.postgres_log_$i () INHERITS (public.postgres_log) SERVER pglog
-        OPTIONS (filename '../pg_log/postgresql-$i.csv', format 'csv', header 'false');
-        GRANT SELECT ON public.postgres_log_$i TO admin;"
+        echo "CREATE FOREIGN TABLE IF NOT EXISTS public.postgres_log_${i} () INHERITS (public.postgres_log) SERVER pglog
+        OPTIONS (filename '../pg_log/postgresql-${i}.csv', format 'csv', header 'false');
+        GRANT SELECT ON public.postgres_log_${i} TO admin;"
     else
         for h in $(seq 0 23); do
-            echo "CREATE FOREIGN TABLE IF NOT EXISTS public.postgres_log_$i_$h () INHERITS (public.postgres_log) SERVER pglog
-            OPTIONS (filename '../pg_log/postgresql-$i-$h.csv', format 'csv', header 'false');
-            GRANT SELECT ON public.postgres_log_$i_$h TO admin;"
+            echo "CREATE FOREIGN TABLE IF NOT EXISTS public.postgres_log_${i}_${h} () INHERITS (public.postgres_log) SERVER pglog
+            OPTIONS (filename '../pg_log/postgresql-${i}-${h}.csv', format 'csv', header 'false');
+            GRANT SELECT ON public.postgres_log_${i}_${h} TO admin;"
         done
     fi
 
     echo "
-CREATE OR REPLACE VIEW public.failed_authentication_$i WITH (security_barrier) AS
+CREATE OR REPLACE VIEW public.failed_authentication_${i} WITH (security_barrier) AS
 SELECT *
-  FROM public.postgres_log_$i
+  FROM public.postgres_log_${i}
  WHERE command_tag = 'authentication'
    AND error_severity = 'FATAL';
-ALTER VIEW public.failed_authentication_$i OWNER TO postgres;
-GRANT SELECT ON TABLE public.failed_authentication_$i TO robot_zmon;
+ALTER VIEW public.failed_authentication_${i} OWNER TO postgres;
+GRANT SELECT ON TABLE public.failed_authentication_${i} TO robot_zmon;
 "
 done