calling two parameters from a file using bash script

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this script explains how to call two parameters or arguments or values from a file using bash script in a for loop

file_path :  path to the file
i and j are the variables for the calling values


for i in `cut -d: -f2 file_path`
do
j=`cat file_path | grep $i | awk {'print $1'} | cut -d: -f1`
echo $i $j
done

How to block the mails by subject in exim

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Suppose you want to block the mails having subject job
Open the file /etc/mail/spamassassin/local.cf
And add the following lines.

header   JOB_SUBJECT Subject =~ /job/i
header   JOB_FROM    From =~ /job/i
meta     JOB_HEADER JOB_FROM && JOB_SUBJECT
score    JOB_HEADER 10.0
describe JOB_HEADER Block Mails with job in subject

save the file and restart the exim service if needed.

How to block mails by body content in exim

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open the file /etc/mail/spamassassin/local.cf

and add the following lines.


rawbody  RULE_NAME  /CONTENT_WORD/i
score RULE_NAME 100

Restart the exim service if needed.

How to create a php info page

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Go to the DocumentRoot of your domain or default DocumentRoot of your webserver.

Create a php info file as follows.
[root@server1 public_html]# cat info.php

<?php
// Show all information, defaults to INFO_ALL
phpinfo();
?>
[root@server1 public_html]#

Give proper permissions
permission 644
ownership as domain owners

Now go to the browser and access as given below:

http://your_domain/info.php

or

http://your_ip_address/info.php

Best Reads:
Best Reads:
1. Linux Bible 
2. The Linux Command Line: A Complete Introduction
3. Amazon Web Services For Dummies   
4. Programming PHP 
5. Learning PHP, MySQL & JavaScript: With jQuery, CSS & HTML5  

How to enable php json on centos

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We can enable php json using pecl. This can be used in directadmin servers also.

First we have to find the location of perl command. Using the following command.
[root@server1 /]# which pecl
/usr/local/bin/pecl

Now installing json using pecl
[root@server1 /]# /usr/local/bin/pecl install json

Testing the module

[root@server1 /]# php -ini | grep json

json

json support => enabled

json version => 1.2.1

[root@server1 /]#

rebuilding corrupted named.conf in cpanel

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Sometimes we will get our named.conf corrupted. Here is the way to fix that in cpanel servers.

First of all clear the named.conf using the following command

root@cpaneltest [~]#> /etc/named.conf

Now execute the cpanel script to rebuild the named.conf
root@cpaneltest [~]#/scripts/rebuildnamedconf

Now restart the named service
root@cpaneltest [~]#/etc/init.d/named restart
Everything should be fixed now.

/usr/sbin/chkfontpath is needed by msttcorefonts-2.0-1.noarch

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You may getting this error while installing rpms.
/usr/sbin/chkfontpath is needed by msttcorefonts-2.0-1.noarch

Eg:
[root@vps /]# rpm -ivh msttcorefonts-2.0-1.noarch.rpm
error: Failed dependencies:
        /usr/sbin/chkfontpath is needed by msttcorefonts-2.0-1.noarch

You have to install the package chkfontpath using the fowllowing command
[root@vps /]# yum  install chkfontpath

You you can install the rpm without errors.
[root@vps /]# rpm -ivh msttcorefonts-2.0-1.noarch.rpm
Preparing...                   ########################################### [100%]
   1:msttcorefonts          ########################################### [100%]
[root@vps /]#

Confirming the installation
[root@vps /]# rpm -q msttcorefonts
msttcorefonts-2.0-1
[root@vps /]#

Configuring nginx as proxy for apache in ubuntu

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Install apache2 and nginx services.

In this setup we configured apache to run on port 81 and nginx on port 80

nginx configuration file is given below :


root@host ~ # vi /etc/nginx/nginx.conf

user www-data;

worker_processes  1;
error_log  /var/log/nginx/error.log;
pid        /var/run/nginx.pid;
events {
    worker_connections  1024;
    # multi_accept on;
}
http {
    include       /etc/nginx/mime.types;
    access_log  /var/log/nginx/access.log;
    sendfile        on;
    #tcp_nopush     on;
    #keepalive_timeout  0;
    keepalive_timeout  65;
    tcp_nodelay        on;
    gzip  on;
    gzip_disable "MSIE [1-6]\.(?!.*SV1)";
    include /etc/nginx/conf.d/*.conf;
    include /etc/nginx/sites-enabled/*;

server {

        listen ip_address:80;

        server_name domain.com www.domain.com;

        location / {

        proxy_pass http://ip_address:81/;

        proxy_redirect http://ip_address:81/ /;

        proxy_set_header Host $host;

        proxy_set_header X-Real-IP $remote_addr;

        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        proxy_connect_timeout 150;

        proxy_send_timeout 100;

        proxy_read_timeout 100;

        proxy_buffers 4 32k;

        client_max_body_size 8m;

        client_body_buffer_size 128k;

                }

        location ~* ^.+\.(jpg|js|jpeg|png|ico|gif|txt|js|css|swf|zip|rar|avi|exe|mpg|mp3|wav|mpeg|asf|wmv)$ {

        root document_root_of_domain;

                }

        }

}

Disabling the unnecessary services in ubuntu or debian

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We can list all the services currently running using the following command. 
#service --status-all


Eg:
root@host ~ # service --status-all
 [ ? ]  amavis
 [ + ]  apache2
 [ + ]  apparmor
 [ ? ]  atd
 [ + ]  bind9
 [ - ]  bootlogd
 [ - ]  clamav-daemon
 [ + ]  clamav-freshclam
 [ ? ]  console-setup

***********out put truncated********

To remove a service from debian startup execute the following command
#update-rc.d -f  service_name remove

Eg:

root@host ~ # update-rc.d -f atd remove
 Removing any system startup links for /etc/init.d/atd ...
root@host ~ #


In case if you want to add a service to ubuntu default runlevels execute the following command. 
#update-rc.d service_name defaults

Eg:

root@host ~ # update-rc.d proftpd defaults
 Adding system startup for /etc/init.d/proftpd ...
   /etc/rc0.d/K20proftpd -> ../init.d/proftpd
   /etc/rc1.d/K20proftpd -> ../init.d/proftpd
   /etc/rc6.d/K20proftpd -> ../init.d/proftpd
   /etc/rc2.d/S20proftpd -> ../init.d/proftpd
   /etc/rc3.d/S20proftpd -> ../init.d/proftpd
   /etc/rc4.d/S20proftpd -> ../init.d/proftpd
   /etc/rc5.d/S20proftpd -> ../init.d/proftpd

root@host ~ #

How to find the parent package of a file on Ubuntu

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We can find the parent package of a file using following command in debian or ubuntu. 

root@host ~ # dpkg -S /usr/sbin/mysqld
percona-server-server-5.5: /usr/sbin/mysqld
root@host ~ #

For the same purpose you can use following command in centos, redbat or fedora 


root@cpaneltest [~]# rpm -qf /usr/sbin/mysqld
MySQL-server-5.0.92-0.glibc23
root@cpaneltest [~]#

How to find the parent package of a file on Ubuntu

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We can find the parent package of a file using following command in debian or ubuntu. 

root@host ~ # dpkg -S /usr/sbin/mysqld
percona-server-server-5.5: /usr/sbin/mysqld
root@host ~ #

For the same purpose you can use following command in centos, redbat or fedora 


root@cpaneltest [~]# rpm -qf /usr/sbin/mysqld
MySQL-server-5.0.92-0.glibc23
root@cpaneltest [~]#

Configuring the GNUpanel

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Configuring the GNUpanel here are the steps :

1. login to your vps  as root user.

2. run these following commands to configure :
 # cd /directorio/gnupanel_lenny_ubuntu_hardy_intrepid_0.3.0_R7
# gnupanel-config.sh

3. when the configuration finished the admin interface can be located here: http://ip-publica/admin

4. the detail instruction can be found here: http://gnupanel.org/archives/category/howtos

Finding the clientid and licenseid of directadmin

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You can find the clientid and licenseid of currently installed directadmin  from the file /usr/local/directadmin/scripts/setup.txt


[root@localhost ~]# cat /usr/local/directadmin/scripts/setup.txt
hostname=host.domain.tld
email=admin@host.domain.tld
mysql=aQGNqbDD
mysqluser=da_admin
adminname=admin
adminpass=o9uMqaIn
ns1=ns1.domain.tld
ns2=ns2.domain.tld
ip=
netmask=
uid=123
lid=4567
services=services_es50.tar.gz
[root@localhost ~]#

You can update the license manually as follows

[root@localhost ~]#cd /usr/local/directadmin/scripts 

[root@localhost ~]#./getLicense.sh 123 1234

[root@localhost ~]#service directadmin restart

FFmpeg installation on Centos cpanel server

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First you have to install the following repositories for yum. [check your system architecture]


rpm -Uvh http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.2-2.el5.rf.x86_64.rpm
rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm
rpm -Uvh http://download1.rpmfusion.org/free/el/updates/testing/5/i386/rpmfusion-free-release-5-0.1.noarch.rpm
rpm -Uvh http://download1.rpmfusion.org/nonfree/el/updates/testing/5/i386/rpmfusion-nonfree-release-5-0.1.noarch.rpm

Install ffmpeg, mplayer and mencoder

yum install ffmpeg mplayer mencoder

Install ruby using cpanel script
/scripts/installruby

Install flvtool
gem install flvtool2

Install MP4Box
yum install gpac gpac-libs

Install development packages for ffmpeg
yum install ffmpeg-devel

Install ffmpeg-php
wget http://downloads.sourceforge.net/ffmpeg-php/ffmpeg-php-0.6.0.tbz2
tar xjf ffmpeg-php-0.6.0.tbz2
cd ffmpeg-php-0.6.0
phpize
./configure
make
make install

Enabling ssl version 3 in apache

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This post explains how to enable ssl version3 and TLS v1.0 using apache httpd webserver.

Edit the httpd.conf file and add the following lines to it.


[root@server ~]# vi /etc/httpd/conf/httpd.conf

#SSL3

<IfDefine SSL>
SSLProtocol -all +SSLv3 +TLSv1
SSLCipherSuite SSLv3:+HIGH:+MEDIUM
</IfDefine>

Now restart the httpd service.
[root@server ~]# /etc/init.d/httpd restart

Thats it.