Cannot reattach screen session

February 18th, 2010 No Comments   Posted in Centos

Some time you get error when you try to reattach with your screen session after you disconnected. So here are some tricks.

To see existing screen sessions

# screen -list

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Installing screen on CentOS 5.x

February 18th, 2010 No Comments   Posted in Centos

Screen … It let you have multiple virtual windows in one physical terminal session, and very necessary to use if you are compiling remotely and your internet connection is not reliable.

1) Download latest RPM

http://www.rpmfind.net/linux/rpm2html/search.php?query=screen

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php 5.3 is now available in cpanel’s easyapache

February 2nd, 2010 No Comments   Posted in Centos, cpanel

Cpanel has released php 5.3 in easyapache but there are several features which are missing in php 5.3.

Like php 5.3 does not support Zend. However PHP 5.3.1 introduces namespaces, late static binding, decreased memory usage (YMMV), several new extensions, and improved MySQL support.  Be sure to check your scripts for compatibility before going live with PHP 5.3.1 on a production server.  Some scripts will be affected by some of the changes, so testing is extremely important.

More information can be found at

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Enableing passive mode in FTP server with CSF firewall

January 11th, 2010 No Comments   Posted in Centos, Firewalls, cpanel

Passive mode is always very important for ftp servers, if you are running csf firewall and cannot connect to ftp server then it means that range of passive ports is blocked in firewall. Here are simple steps

1) Add Passive Port range 30000-350000 to your Pureftp or Proftp configuration file

i) For Pure FTP

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wireshark on Centos5.x, installation and running

November 15th, 2009 No Comments   Posted in Centos

Installation of wireshark is very easy on centos

yum install wireshark

Run a capture

tethereal -i eth1 -w ~/mycapture.pcap

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Installing ImageMagick in Cpanel

You can install by running one command only

#/scripts/installimagemagick

You can check whether imagemagick is installed or not using

#/scripts/checkimagemagick

If this installation does not work, then you can uninstall it and install it manually

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Installing yum in CentOS 5.3

August 21st, 2009 No Comments   Posted in Centos

Download rpms

wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/elfutils-0.137-3.el5.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/elfutils-libs-0.137-3.el5.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/elfutils-libelf-0.137-3.el5.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/expat-1.95.8-8.2.1.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/gmp-4.1.4-10.el5.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/libxml2-2.6.26-2.1.2.7.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/libxml2-python-2.6.26-2.1.2.7.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/m2crypto-0.16-6.el5.3.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/python-2.4.3-24.el5.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/python-elementtree-1.2.6-5.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/python-iniparse-0.2.3-4.el5.noarch.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/python-sqlite-1.1.7-1.2.1.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/python-urlgrabber-3.1.0-5.el5.noarch.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/readline-5.1-1.1.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/rpm-4.4.2.3-9.el5.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/rpm-libs-4.4.2.3-9.el5.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/rpm-python-4.4.2.3-9.el5.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/sqlite-3.3.6-2.i386.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/yum-3.2.19-18.el5.centos.noarch.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/yum-fastestmirror-1.1.16-13.el5.centos.noarch.rpm
wget http://mirror.centos.org/centos-5/5.3/os/i386/CentOS/yum-metadata-parser-1.1.2-2.el5.i386.rpm

Then run
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Installing RED5 server in CentOS 5.x

August 18th, 2009 No Comments   Posted in Centos, RED5

1) Install java

yum -y install java-1.6.0-openjdk java-1.6.0-openjdk-devel

2) Install ant (apache project)

cd /usr/src
wget http://opensource.become.com/apache/ant/binaries/apache-ant-1.7.1-bin.tar.gz
tar zxvf apache-ant-1.7.1-bin.tar.gz
mv apache-ant-1.7.1/ /usr/local/ant

3) Export veriables for Java and ant
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How to mount second hard drive in CentOS 5.x

August 14th, 2009 1 Comment   Posted in Centos, System Administration

I was trying to mount second drive in my server which was connected via usb, so I thought to post it here as well

Run
# fsdisk -l
to see the list of drives in server..
second drive will most probably will be sdb
1) Make its partition

# fdisk /dev/sdb
press n
press p
press w

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