http://stackoverflow.com/questions/473998/tool-or-language-to-count-occurrances-of-errors-in-a-log-file

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We will create a self-signed Certificate !
In Dovecot postfix SSL.
Default for Virtualmin in DEBIAN 5
error – logging

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egrep '(warning|error|fatal|panic):' /var/log/mail.log | more
 
Jan 30 05:27:02 Debian-50-lenny-64-minimal dovecot: pop3-login: Can't load private key file /etc/ssl/private/dovecot.pem: error:0B080074:x509 certificate routines:X509_

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simple
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rm -r /var/log/apache2
rm -r /var/cache/eaccelerator
rm -r /root/Maildir
rm -r /home/internetfastnews/Maildir
rm -r /home/zxnews/Maildir
rm -r /home/seoch/Maildir
rm -r /home/otvetish/Maildir
rm -r /home/teaseo/Maildir
rm -r /home/school/Maildir

Secure server backup logic
1) find all buckup files *.gz
2) encode them to *.gz.out
3) remove gz file
4) upload to ftp
5) remove encoded file

Secure server backup script

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#!/bin/sh
BACKUPDATE=`date +%Y-%m-%d`;
find . -type f -name "*.gz" -print|while read myfile
do
    openssl enc -aes-256-cbc -salt -in "$myfile" -out "$myfile".out -pass pass:PaSSwordThere;
    rm "$myfile" ;
    curl -v -T "$myfile".out ftp://login:"FTppassThere"@ftpserveraddres.com/${BACKUPDATE}/"$myfile" -Q "MKD ${BACKUPDATE}";
   curl -v -T "$myfile".out ftp://login:"FTppassThere"@ftpserveraddres.com/${BACKUPDATE}/"$myfile" ;
    rm "$myfile".out ;
    echo "$myfile" "\n" ;
done

This is my first backup script!

Also decode example
openssl enc -d -aes-256-cbc -in zzzz.gz.out -out zzzz.gz -pass pass:PaSSwordThere;