I realized a few of my log files were growing unusually large, and even worse, logrotate was skipping them. I took a look in logrotate.d and straight away realized why: I had created silly names for the log file. logrotate look for .log files, but I had specified mine as .log -- e.g. kelvinism_access_log. I was as familiar with logrotate when I set up the domains, so set forth to get them in the rotation.
Firstly, I had to rename the actual log files. So, to rename kelvinism_access_log to kelvinism_access.log, a one-liner:
for x in *_log; do mv $x `basename $x _log`.log; done;
Next, I needed to rename the log location inside each of the Apache config files. While a one-liner might be possible, I used the following tiny script:
#!/bin/sh for x in * do sed 's/\_log/\.log/' $x > /tmp/tmpfile.tmp mv /tmp/tmpfile.tmp $x done