Minor fixes to expire_cache.sh cron script to handle special chars in

filename.

conf/cron/expire_cache.sh

@@ -6,21 +6,21 @@
 set -eo pipefail
 
 # Get % of used disk space
-THRESHOLD_PCT=95 #%. Above this % of used diskspace, cache is expired
+THRESHOLD_PCT=90 #%. Above this % of used diskspace, cache is expired
 USED_PCT=$(df -ah | grep "/usr/src/app" | head -n1 | awk '{print $5}' | sed 's/%$//')
 if (( $USED_PCT < $THRESHOLD_PCT )); then
   echo 'No need to prune. Exiting...'
   exit #no need to prune
 fi
 
 # From: http://unix.stackexchange.com/a/29205
-DELETE_LIMIT=2000 # number of oldest files deleted
+DELETE_LIMIT=8000 # number of oldest files deleted
 echo 'Pruning older cached files...'
 while IFS= read -r -d $'\0' line ; do
   file="${line#* }"
 
   echo "Deleting $file..."
-  rm $file
+  rm "$file"
 
   let DELETE_LIMIT-=1
   [[ $DELETE_LIMIT -le 0 ]] && break