backing up something daily, weekly, monthly and yearly with logrotate

backup.conf

# daily backup for 7 days
"/file/to/backup.log" {
     daily
     copytruncate
     rotate 7
     compress
     compresscmd /bin/bzip2
     compressext .bz2
}

# weekly backup for 4 weeks
"/file/to/backup.log.7.bz2" {
     weekly
     missingok
     rotate 4
}

# monthly backup for 12 months
"/file/to/backup.log.7.bz2.4" {
     monthly
     missingok
     rotate 12
}

# yearly backup for 10 years
"/file/to/backup.log.7.bz2.4.12" {
     yearly
     missingok
     rotate 10
}