Comment 0 for bug 1708665

This was found in Ubuntu 16.04. I have not tested other versions.

The /etc/logrotate.d/httpd-prerotate/awstats/prerotate.sh script does not run by default, because the 'www-data' user does not have a valid shell by default.

root@www:~# bash -x /etc/logrotate.d/httpd-prerotate/awstats/prerotate.sh
+ UPDATE_SCRIPT=/usr/share/awstats/tools/update.sh
+ '[' -x /usr/share/awstats/tools/update.sh ']'
+ su -l -c /usr/share/awstats/tools/update.sh www-data
This account is currently not available.

We could give www-data a valid shell but my preferred fix is to edit /etc/logrotate.d/httpd-prerotate/awstats/prerotate.sh and explicitly specify the shell with '-s /bin/bash':

diff -u ~/prerotate.sh /etc/logrotate.d/httpd-prerotate/awstats/prerotate.sh
--- /root/prerotate.sh 2017-07-31 17:07:43.749559681 -0500
+++ /etc/logrotate.d/httpd-prerotate/awstats/prerotate.sh 2017-07-31 17:07:54.122034426 -0500
@@ -2,5 +2,5 @@
 UPDATE_SCRIPT=/usr/share/awstats/tools/update.sh
 if [ -x $UPDATE_SCRIPT ]
 then
- su -l -c $UPDATE_SCRIPT www-data
+ su -l -c $UPDATE_SCRIPT -s /bin/bash www-data
 fi