Ubuntu Server23.04 ; Initial setup after OS installation
1. Set root password and use SU command
In the default configuration of Ubuntu, the root user is unavailable because no password has been set.
By setting a password for the root user, transitions using the traditional [su] command will be possible.
3. Make locate command available
The find command is often used to search for specific files throughout the Linux system, but find is somewhat confusing in terms of specifying options.
The locate command can extract all files with a specified filename.
5. Network Settings
5.1 Host Name Settings
This procedure is not necessary if you have already set the hostname at the time of Ubuntu installation and wish to use the hostname as it is.
To change the hostname, use the "hostnamectl set-hostname" command.
As an example, we set "ubuntu-10" as the hostname.
5.2 Set IP address to network interface
If a fixed IP address was specified during Ubuntu installation, this section is not necessary.
To change the IP address, change the " /etc/netplan/00-installer-config.yaml" file, and then restart the network interface (enp0s3 in this environment).
The network interface name will change depending on the environment in which the setup was performed, so check the interface name first.
2023.10.01
Ubuntu23.04_en