How to Create Additional LVM on RHEL 6/CentOS 6


Most of the linux administrator facing run out of disk space to store data and sometimes there is another request for them to create additional logical volume manager(LVM) for new system or to store data. It is possible to perform this task if that system administrator has the right skill on linux. Otherwise, they will […]

How to Check Memory and I/O with vmstat on Linux CentOS 5/CentOS 6/RHEL 5/RHEL 6 server – System Performance


vmstat command is a utility that will provides interesting information abaout processes, memory, i/O and CPU activity. When you run vmstat utility command without any arguments, you will see the output as below. This post will guide you on how to check memory and I/O with vmstat on Linux CentOS 5/CentOS 6/RHEL 5/RHEL 6 server […]

Transfer Files Between Servers in Linux


SSH File Transfer Protocol also called Secret File Transfer Protocol or Secure FTP, or SFTP is a network protocol that provides file access, file transfer, and file management functionality over the network. In this post i will show how to transfer the files using sftp command on Linux Red Hat Enterprise Linux 6 (RHEL 6). […]

How to Check Apache Error Log and Access Log file

The purpose of logging in a server is to diagnose some issues. The common way to start the troubleshooting is to look at logs. For apache httpd server, all the log is normally stored at “/var/log/httpd” as below : [root@centos62 ~]# ls /var/log/httpd/ access_log error_log How to Continuously Check Apache Error Log file : [root@centos62 […]

How to Install vim on RHEL 6


In this post, i will show on how to install vim on Redhat Enterprise Linux 6 (RHEL 6) Linux server. Vim stands for ‘Vi Improved’. Vi is one of the most popular and powerful editors in the Unix systems. Vim is an advanced text editor, alternative editor for VI and it’s highly configurable text editor […]

How to Check Hard Disk Size and Hard Disk Usage on CentOS 6.2


In this post, i will share the simple command to check the Hard Disk size and usage on CentOS 6.2. This command is a basic command for linux operating system. To view and list of the usage of each partition in the server : [root@centos62 ~]# df -h Filesystem Size Used Avail Use% Mounted on […]