Posts Tagged ‘Linux’

How to Create Virtual Machine

Virtual machine (VM) is an emulation of a computer system. Virtual machines are based on computer architectures and provide functionality of a physical computer. Their implementations may involve specialized hardware, software, or a combination.

How to get list of users in Linux

The /etc/passwd file is used to keep track of every registered user that has access to a system. Sometimes, we want to know the list of local users. If we want to get list of users in terminal, run below command. cut -d: -f1 /etc/passwd If we want to save this output in file, then […]

Putty installation and configuration

PuTTY is a open source software application for windows. Which is used to make an SSH connection to the server. 1) Download the putty from http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html 2) Double click on putty-xx-installer.exe

Difference between Windows and Unix

Windows Unix It is graphical User Interface It is Command Line Interface This is thread based concept This is processs based concept To boot Windows operating system 12MB RAM is required To boot Unix operating system 2MB RAM is required In Windows if any user process killed, it effects all. In Unix,if any user process […]

Differences between hard link and soft link

What is link Unix: To give a pointer to the source file called as a link. In Unix/Linux there are two types of links 1. Soft link and 2. Hard link. Soft Links Hard Links The inode number for the source file and link file are different Source file and link file has same inode […]

Install PostgreSQL on Linux

PostgreSQL is open source RDBMS. Please follow below steps to Install PostgreSQL on Linux. We are installing on Redhat Linux. 1. Download from EnterpriseDB. 2. Copy the tar file and unzip it by running following commands. gunzip ppasmeta-9.4.1.3-linux-x64.tar.gz tar xf ppasmeta-9.4.1.3-linux-x64.tar

How to find ip address on Linux

This is basic tutorial for unix/linux administrators to findout the ip address of Linux machine/host. Following are the different commands to findout the ip address. 1. Using /sbin/ifconfig

Sybase Installation on Linux

Sybase ASE is RDBMS database. Most of finance institutions are using sybase as their database product. Sybase Installation on Linux Step by Step guide: Download Sybase ASE software from SAP Site, then unzip the ase160_linuxx86-64.tgz. 1. Open the terminal and navigate to Sybase ASE extracted file. 2. Then, run the setup.bin file to start Sybase […]

How to create cron jobs

In any operating system, it is possible to create jobs that we want to reoccur. This process known as job scheduling. There are two tools to schedule jobs: 1. at 2. crontab Crontab: Any user can create a cron job. As the root user, we can also have the ability to edit and remove any […]

scp command in linux

SCP: SCP stands for Secure Copy. SCP is used to copy data from one unix/linux sserver to another unix/linux server. SCP uses ssh(secured shell) to transfer the data between the remote hosts. Features of SCP are: Copies files within the same machine. Copies files from local machine to remote machine Copies files from remote machine […]

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