“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: The hostname does not exist: The hostname may have been typed incorrectly or the host may …
Linux
“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 occur if the directory name is spelled incorrectly, if the directory does not exist, or …
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 numerical label assigned to each device connected to a computer network that uses the Internet …
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 used to display information about the current network configuration, including IP addresses, netmasks, and the …
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 looks for the command in the directories listed in the PATH variable. If it finds …
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 network connections and open ports on a Linux system. The ss command is similar to …
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 appear to be much larger than it actually is, while taking up very little space …
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 other network statistics. tcpdump – capture and analyze network traffic in Linux ping: The ping …
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 directory tree, while relative paths refer to a location relative to your current directory. To …
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 ways to fix the cd: Permission denied error. Hopefully one of these methods will work …