--- apport.orig	2016-04-01 01:13:38.000000000 +1100
+++ apport	2017-12-08 11:46:04.556475915 +1100
@@ -1,5 +1,6 @@
 #!/bin/sh -e
-# clean all crash reports which are older than a week.
+# clean old crash reports.
+days_to_retain=7
 [ -d /var/crash ] || exit 0
-find /var/crash/. ! -name . -prune -type f \( \( -size 0 -a \! -name '*.upload*' -a \! -name '*.drkonqi*' \) -o -mtime +7 \) -exec rm -f -- '{}' \;
-find /var/crash/. ! -name . -prune -type d -regextype posix-extended -regex '.*/[0-9]{12}$' \( -mtime +7 \) -exec rm -Rf -- '{}' \;
+find /var/crash/. ! -name . -prune -type f \( \( -size 0 -a \! -name '*.upload*' -a \! -name '*.drkonqi*' \) -o -mtime +"$days_to_retain" \) -exec rm -f -- '{}' \;
+find /var/crash/. ! -name . -prune -type d -regextype posix-extended -regex '.*/[0-9]{12}$' \( -mtime +"$days_to_retain" \) -exec rm -Rf -- '{}' \;