discard outdated deferred messages after (default) three days in a portable way (no egrep, avoid long command line)

petidomo/rc.petidomo

@@ -5,6 +5,7 @@
 
 %config
     petidomo_enable="$openpkg_rc_def"
+    petidomo_maxday="3"
     petidomo_log_prolog="true"
     petidomo_log_epilog="true"
     petidomo_log_numfiles="10"
@@ -13,6 +14,9 @@
 
 %daily -u @l_susr@
     rcService petidomo enable yes || exit 0
+    for i in `find @l_prefix@/var/petidomo/ -mtime +$petidomo_maxday | sed -n 's;/[0-9A-F]\{32\}$;&;p'`; do
+        rm "$i" >/dev/null 2>&1 || true
+    done
     shtool rotate -f \
         -n ${petidomo_log_numfiles} -s ${petidomo_log_minsize} -d \
         -z ${petidomo_log_complevel} -o @l_rusr@ -g @l_rgrp@ -m 644 \