The su command is used to run commands as a another user. It is simplest way to switch to the administrative account in the current login session. It is very useful when the root user is not allowed to log in to the system through ssh. For example, in Ubuntu, root user is disabled...
PostgreSQL is also known as Postgres and it’s an open-source object-relational database management system. It is important to know the version of the PostgreSQL server which is installed on your system when your application is based on specific version. This tutorial will show you how to check the PostgreSQL server version which is running...
A process is an executing instance of a program. Process is one of the important concept of the Linux OS. Linux provides ps utiliy to view information about running processes. In this article, we will show you how to use the ps command to list the currently running processes and their PIDs along with...
In Linux, it is very necessary to find the unnecessary files and free up them from your hard disk. Usually, Linux systems run out of disk space due to large log or backup files. This tutorial explains how to find the large files and directories in Linux systems using the find and du command....
TeamViewer is a popular cross-platform application and widely used for remote control, desktop sharing, remote meetings and file sharing between computers. In this tutorial we will explain how to install TeamViewer on Debian 10. Prerequisites# Make sure you have logged in as root or user with sudo privileges. Installing TeamViewer on Debian# TeamViewer is...
The type command is used to show information about the command type and how its argument would be interpreted if typed on the command line. It is also used to find out whether it is built-in or external binary file. In this article, we will explain how to use the Linux type command. How...
The ls is a Linux shell command, used to list information about files and directories within the file system. By default ls utility is installed on all Linux distributions. This tutorial explains how to use the ls command with examples. How to Use the ls Command# Following is the basic syntax for the ls...
While working with Bash and shell scripts, you might need to check whether a directory or a file exists or not on your filesystem. In order to check whether a file or a directory exists with Bash, you can use test command. Following is the basic syntax for the test command: Check If File...
A symbolic link is also known as symlink or soft link, is a special type of file that serves as a reference to another file or directory. A symlink can point to a file or a directory on the same or a different filesystem or partition. This guide explains how to remove symbolic links...
The unlink is a command-line utility for removing a single file. It calls directly interfaces with the unlink system function, which removes a specified file. This tutorial shows you how to remove a file in Linux using unlink command. Removing File with unlink# Following is the syntax for the unlink command: unlink FILENAME Here,...