A network interface is a point of interaction between a computer and a network. It can be a physical device, such as an Ethernet card or wireless adapter, or a virtual interface created by software. An IP address is a…
The “ip” command is a Linux command used to configure and manage network interfaces on a Linux system. It can be used to set various network interface parameters, such as IP addresses, netmasks, and gateway addresses. It can also be…
The PATH variable is a list of directories that contains executable programs. It controls where your shell will look for commands on your system. When you enter a command in the terminal, such as grep, ls, or echo, the shell…
In Linux, there are several commands that can be used to find the process name associated with a specific port number. The most commonly used commands for this purpose are netstat, ss, and lsof. The netstat command provides information about…
A sparse file is a type of computer file that has holes in it. These holes don’t contain actual data. A spare file only allocates disk space for the data that are actually stored. This allows a sparse file to…
Here are five commands that we can use to troubleshoot network issues in Linux. ifconfig: the ifconfig command is used to view and configure network interface parameters. netstat: The netstat command is used to display network connections, routing tables, and…
The cd command is used to change the current working directory. When using the cd command with arguments, you can use either absolute paths or relative paths as arguments for the command. Absolute paths begin at the root of the…
If you’re getting an error like “cd: Permission denied” when trying to change directories in Bash, don’t worry, you’re not alone. This is a common issue that can be fixed fairly easily. In this blog post, we will discuss two…
The SSH option StrictHostKeyChecking is a security feature that affects how SSH verifies the identity of a remote computer when connecting to it. It determines whether strict host checking is enabled or disabled. When this option is enabled, the client…
If you’ve been getting the error message “ssh: Could not resolve hostname Name or service not known,” don’t worry, you’re not alone. The error message “ssh: Could not resolve hostname [name]: Name or service not known” indicates that the SSH…
