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The following workaround to ssh into ubuntu 22.04 and above server with Guacamole comes from this pageSource Page When setting up Guacamole I had issues with connecting to the ubuntu machine via a ssh connection. The server simply said connection error. Kn...

If you run VirtualBox, here are some useful commands to manage your VMs. Check state of VM VBoxManage showvminfo your-vm | grep State State should be running. If aborted, but stop and restart the VM (see below). Check NIC configuration of VM VBoxManage sh...

Note: The command VBoxManage is used to manage VirtualBox for the current user. Please ensure that you SU to the user where VirtualBox is configured. List virtual machines VBoxManage list vms # Output from above command "MyVM" {e4b0c92c-4301-4a7d-8af8-fe...

Service must be stopped to apply Oracle Virtual Box Updates. systemctl stop vboxautostart-service.service systemctl stop vboxballoonctrl-service.service systemctl stop vboxdrv.service systemctl stop vboxweb-service.service Alternatively the service comman...

If apt-get update && apt-get upgrade often get a message that one or more upgrades are held back. Then usually run dist-upgrade`` to run it through and it works fine. As far as I can tell ,dist-upgrade``` does all the same things and then some. So, my quest...

Why and how do I solve it? Example of what it might look like; apt-get update && apt-get upgrade ... The following packages have been kept back: gimp gimp-data libgegl-0.0-0 libgimp2.0 Why this is happening If the dependencies have changed on one of t...

Once an SSH key has been created, the ssh-copy-id command can be used to install it as an authorized key on the server. Once the key has been authorized for SSH, it grants access to the server without a password. Use a command like the following to copy SSH k...

ssh-keygen generates, manages and converts authentication keys for ssh. ssh-keygen can create RSA keys for use by SSH protocol version 1 and RSA or DSA keys for use by SSH protocol version 2. The type of key to be generated is specified with the -t option. If ...

useradd Command The general syntax for the useradd command is as follows: useradd [OPTIONS] USERNAME Only root or users with sudo privileges can use the useradd command to create new user accounts. When invoked, useradd creates a new user account according...

Change Terminal Shell to the Bash Shell This is to change the current user (with sudo privileges) to the bash shell. sudo chsh -s /bin/bash $(whoami) Change a user (not current user) to use the bash shell. sudo chsh -s /bin/bash $(username) ...

usermod -aG sudo username

Change IP ifconfig <interface_name> <ip_address> netmask <netmask_address> Change Gateway sudo route add default gw <gateway_ip_address> <interface_name> Example sudo ifconfig Ethernet 10.0.100.27 netmask 255.255.255.0 sudo route add default gw 10.0.10...

The qemu-guest-agent is a helper daemon, which is installed in the guest. It is used to exchange information between the host and guest, and to execute command in the guest. In Proxmox VE, the qemu-guest-agent is used for mainly three things: To prop...

A time zone is a geographic region that has the same standard time. Typically the time zone is set during the installation of the operational system, but it can be easily changed at a later time. Using the correct time zone is essential for many systems relat...

The error message ping: socktype: SOCK_RAW followed by ping: socket: Operation not permitted indicates that the user does not have the necessary permissions to use the ping command. The error message ping: => missing cap_net_raw+p capability or setuid? sugges...

Client URL, or cURL, is a library and command-line utility for transferring data between systems. It supports many protocols and tends to be installed by default on many Unix-like operating systems. Because of its general availability, it is a great choice for...

The following workaround to ssh into ubuntu 22.04 and above server with Guacamole comes from this pageSource Page When setting up Guacamole I had issues with connecting to the ubuntu machine via a ssh connection. The server simply said connection er...

This is to be run from a Terminal session on the Linux machine hosting the Pi-Hole installation. sudo pihole -a -p You will be asked to supply the new password for the Pi-Hole Admin User Output Enter New Password (Blank for no password): Confirm Password:...

File permissions in Linux are coded symbolically (as letters) r - read w - write x - execute And Numerically: 4 - read 2 - write 1 - execute dir permissions Octal del rename create files dir list read files contents write file conten...

Introduction Cron is a time-based job scheduling daemon found in Unix-like operating systems, including Linux distributions. Cron runs in the background and operations scheduled with cron, referred to as “cron jobs,” are executed automatically, making cron us...