“ping: cannot resolve Unknown host” is an error message that typically appears when the ping command is used to try and reach a hostname that cannot be resolved to an IP address. This can happen for a few reasons: …
“cd: no such file or directory” is an error message that is displayed when the command line interpreter (CLI) is unable to find the directory that the user is trying to navigate to using the “cd” command. This error can…
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…
“Command not found” is an error message that is displayed in the terminal when the shell is unable to locate an executable file or command that you have entered. There are several reasons why this error can occur: In…
The “No route to host” error can occur when attempting to connect to a remote host using the Secure Shell (SSH) protocol. This error usually indicates that a request sent from a client is not being properly routed to the…
FileNotFoundError: [Errno 2] No such file or directory is an error that occurs when a Python program or script attempts to access a specific file but does not find the specified file in the designated location. This generally indicates either…
When you receive the error message “SSH Permission denied (publickey)”, it means that there is a problem with the authentication process using a public key. This is because the server is not able to recognize the key. In this…
The export command is a bash shell BUILTIN command. It tells the Linux shell to make the variables available to the child processes. In Linux, the export command is usually used to change local variables to environment variables. We can…
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…
