Need some help with logrotate.

Hello, i need some help with logrotate. i have installed it since i setup my server but seems its not working or i might not configured it properly. now my log folder is nearly 2.5 gb and mail folder is 1.5 gb.

i want to know if i want to set limit of the logfile to 100mb where i need to put size 100M? in /etc/logrotate.d/ or /etc/logrotate.conf

also if i want to overwrite same file instead of creating new after size reached the limit what should i do?

thanks in advance.

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When configuring logrotate you can use 'size 100M` along with ‘rotate 5’ in order to have the specified log file rotated when it reaches 100MB and to keep the 5 most recent logs.