CODE EXAMPLE FOR SHELL

debian logrotate mail.log monatly

nano /etc/logrotate.conf
------------------------
# see "man logrotate" for details
# rotate log files weekly
#weekly
monthly

# keep 4 weeks worth of backlogs
#rotate 4
rotate 12

# create new (empty) log files after rotating old ones
create

# uncomment this if you want your log files compressed
#compress

# packages drop log rotation information into this directory
include /etc/logrotate.d

# no packages own wtmp, or btmp -- we'll rotate them here
/var/log/wtmp {
    missingok
    monthly
    create 0664 root utmp
    rotate 1
}

/var/log/btmp {
    missingok
    monthly
    create 0660 root utmp
    rotate 1
}

# system-specific logs may be configured here