Monthly Archive: August 2012

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How to Change the Hostname on Linux CentOS 6.3 Server

In this post, i will show you on how to change the Hostname on linux CentOS 6.3. I have tested this on RHEL 6, CentOS 5.5 and CentOS 6.2.  and Centos 6.3. Reboot is required for both options (A) and...

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Create your own local yum repositories

Points of interest Q: Where are my yum files downladed while the install is in progress A: Temporary cache directory on CentOS – /var/cache/yum/In my case it was /var/cache/yum/x86_64/6  Source: http://forums.fedoraforum.org/showthread.php?t=256125     Create your own local yum repositories   I’d like...

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Android IO Schedulers

Anticipatory Based on two facts Disk seeks are really slow. Write operations can happen whenever, but there is always some process waiting for read operation. So anticipatory prioritize read operations over write. It anticipates synchronous read operations. Advantages Read requests...

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Android CPU Scaling Governors

Source: Governors CPU governors control exactly how the CPU scales between your “max” and “min” set frequencies. Most kernels have “ondemand” and “performance”. The availability brazilianwax – Similar to smartassv2 with more aggressive ramping, so more performance, less battery. conservative – Available...

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Centos – Configuring network interfaces

System Config Network Tool Installation 6.x $ yum intall system-config-network-tui   Manual setup Source: http://www.centos.org/docs/5/html/Deployment_Guide-en-US/s1-networkscripts-interfaces.html 13.2. Interface Configuration Files   Interface configuration files control the software interfaces for individual network devices. As the system boots, it uses these files to determine what...

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Where are my file /etc/network/interfaces [centos]

What you’re looking for is more likely /etc/sysconfig/network-scripts/ifcfg-eth*…. it has been like this in CentOS 5.2 also.  Ubuntu (deb) – /etc/network/interfacesCentos (rpm) – /etc/sysconfig/network-scripts/ifcfg-eth* CentOS 6.3 Q: From where does ifconfig shows eth0, eth1… , where are they defined? Listing of eth0, eth1… are in...

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Host-Only Networking With VirtualBox

Source: http://christophermaier.name/blog/2010/09/01/host-only-networking-with-virtualbox I’ve been playing around with VirtualBox lately, and it’s pretty nifty. Initially I just used it to set up an Ubuntu machine so I could easily run GnuCash on my MacBook, but lately I’ve decided to start using it at work, too. I’ve...

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15 Practical Linux Find Command Examples

Source: http://www.thegeekstuff.com/2009/03/15-practical-linux-find-command-examples/   Apart from the basic operation of looking for files under a directory structure, you can also perform several practical operations using find command that will make your command line journey easy.In this article, let us review 15 practical...

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How can I access apache (on virtualbox guest) from host?

Query Hi I installed Apache on Ubuntu in a Virtualbox. When I go into the guest and load up Firefox I can see that Apache is working fine when I browse to http://192.168.68.145:8001. I would like to access this same page...

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How to change the hostname of a Linux system

Source: http://www.ducea.com/2006/08/07/how-to-change-the-hostname-of-a-linux-system/ Normally we will set the hostname of a system during the installation process. Many peoples don’t care about this, and don’t change the hostname even if for example this was set to something really stupid by the datacenter that installed the...