Linux, Ubuntu, Debian, Mint, CentOS Tutorials
Linux Bash shell provides the exec command in order to create a new process for the provided command and replace it with the current bash shell process. The exec command derived from the bash low-level exec() method. The exec command executes provided command with the provided arguments. exec Command Syntax The bash exec command has … Read more
As a flexible and advanced scripting environment bash provides the ability to create and run functions. Functions can be created without parameters or with parameters. By using functions with parameters the functions can be used more efficiently by using different data for different cases. In this tutorial, we will examine how to pass parameters into … Read more
The Linux tee command is used to process the standard input and copy the input data into another output or a file. The tee command is generally used with other commands in order to save their input into a file and also redirect to the other commands for processing. tee Command Syntax The Linux tee … Read more
Linux provides the passwd command in order to manage password and related configurations. The passwd can be used for the current user and other users. In order to use passwd command for other users, the root privileges should be provided by logging in to the root or using the sudo command. passwd Command Syntax The … Read more
All of the Linux distributions stores user information in a central file named /etc/passwd. The /etc/passwd file is a simple text based flat database which contains the current Linux system users with information like user name, user ID, default shell etc. Decades ago the /etc/passwd was also containing the user password hashes but because of … Read more
The chage command is used to manage password expiry date in Linux. The chage command can be used to view, enable, disable or set dates for the user and group passwords. Password security is an important part of Cyber Security and the usage time of the passwords should be limited and changed periodically. The chage … Read more
Linux provides the “route add” command in order to add new network routes. The route add command can be used to add a new gateway to access other networks and the internet. Also, explicit routes can be added to access other networks by specifying the first hop. During connection to a network or internet default … Read more
The Bash and Bash Shell is the main management component for the Linux systems. Commands run on bash in order to complete tasks or jobs. These commands can be stored in a file which is called a shell script. The shell script is used to run single or more commands by just calling the shell … Read more
Linux provides a lot of tools and commands to monitor performance and resource usage. But dstat is one of the most popular commands used by users and system administrators. The dstat command is a replacement for the vmstat, iostat, and ifstat command. It merges all these commands into a single command and a single screen … Read more
The dd command is a very useful command used to copy data from one source into a destination. The dd command created in the Unix system in order to copy and convert files and also used in Linux too. The most powerful feature of the dd command is the ability to copy data as raw. … Read more