rotating log files and adding timestamps to postgres logs

I'm working with an application running on PostgreSQL 7.4.17 on RedHat Enterprise Linux. When asked to troubleshoot a problem, I found out the script that starts the PostgreSQL server (/etc/rc.d/init.d/postgresql) was logging to /dev/null To try to fix this, I changed PGLOG=/dev/null to

PGLOG="| /usr/sbin/rotatelogs /var/log/pgsql 86400"

Similar to what is detailed here: http://www.postgresql.org/docs/8.1/interactive/logfile-maintenance.html

When I restarted the server it caused an error that the file "| /usr/sbin/rotatelogs /var/log/pgsql 86400" I made sure rotatelogs is installed, available, and working.

Is this a setup that only works with new versions of PostgreSQL? As far as I know upgrading is not an option and syslog is not available for use. Any suggestions to get log rotation working?

On a related note, I'm currently just doing "PGLOG=/var/log/pgsql". It is working, but there are no timestamps in the file except for when the database was restarted. Any configuration option that can be changed to get timestamps in the log file?

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