Ask me Questions and get Answers ! » unix

Analyse Logging commands for debian linux

admin — Fri, 23 Sep 2011 18:27:22 +0000

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

http://www.thinkplexx.com/learn/article/webperf/baslog/statwithbashandawk

awk ‘{print $1}’ access.log|sort -u
awk ‘{print $2}’ access.log|sort -u
awk ‘{print $3}’ access.log|sort -u

The awk filters out all IP addresses, the sort then removes duplicates.

To find out all accesses to a URL, I do

grep URL access.log

putty port tunneling from command line

admin — Wed, 23 Mar 2011 12:04:44 +0000

use this command in console
ssh -L 8080:127.0.0.1:80 username@router.dyndns.org:port

Dovecot postfix SSL. How to create a self-signed Certificate ?

admin — Wed, 02 Feb 2011 09:44:59 +0000

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

1
2
3

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_

To fix this? you neet to create new SSL cert
1) Check pem and key file location

 
grep 'smtpd_tls_.*_file' /etc/postfix/main.cf
grep 'ssl.*_file' /etc/dovecot/dovecot.conf
 
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
ssl_cert_file = /etc/ssl/certs/dovecot.pem
ssl_key_file = /etc/ssl/private/dovecot.pem
#ssl_ca_file =

2) ################
RUN COMMANDS
################

openssl genrsa -out server.key 1024
openssl req -new -x509 -key server.key -out server.pem -days 1826
mv server.pem /etc/ssl/certs/ssl-cert-snakeoil.pem
mv server.key /etc/ssl/private/ssl-cert-snakeoil.key
/etc/init.d/dovecot restart
 
openssl req -new -x509 -days 3650 -nodes -out /etc/ssl/certs/dovecot.pem \
-keyout /etc/ssl/private/dovecot.pem
/etc/init.d/dovecot restart
/etc/init.d/postfix restart

eaccelerator remove cache

admin — Mon, 03 Jan 2011 15:46:29 +0000

1	rm -rf /var/cache/eaccelerator/*;

How to remove clamav in DEBIAN ?

admin — Wed, 01 Dec 2010 10:11:25 +0000

simple

apt-get remove clamav-base -f -y

How to Clear Debian cache on webserver ?

admin — Thu, 10 Jun 2010 07:17:48 +0000

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 (ftp + openssh+encode) !

admin — Tue, 12 Jan 2010 16:13:57 +0000

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

#!/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;