Merge pull request #2108 from LudovicRousseau/fix_No_such_file_or_directory

Fix sed: can't read /etc/pihole/pihole-FTL.conf: No such file or directory

advanced/Scripts/piholeLogFlush.sh

@@ -16,7 +16,10 @@ source ${colfile}
 # Constructed to return nothing when
 # a) the setting is not present in the config file, or
 # b) the setting is commented out (e.g. "#DBFILE=...")
-DBFILE="$(sed -n -e 's/^\s^.DBFILE\s*=\s*//p' /etc/pihole/pihole-FTL.conf)"
+FTLconf="/etc/pihole/pihole-FTL.conf"
+if [ -e "$FTLconf" ]; then
+  DBFILE="$(sed -n -e 's/^\s*DBFILE\s*=\s*//p' ${FTLconf})"
+fi
 # Test for empty string. Use standard path in this case.
 if [ -z "$DBFILE" ]; then
   DBFILE="/etc/pihole/pihole-FTL.db"