Ubuntu keeps a static IPv4 address in a YAML file under /etc/netplan, and a generator turns it into the configuration the system applies at boot. So editing /etc/network/interfaces does nothing on a current release, and a netplan file with the wrong interface name applies cleanly and changes nothing. The file owns the address, and the
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vsftpd opens two connections for every session, one for commands on port 21 and one for the bytes. That second connection is where a working login turns into a failed upload, and it is the one worth understanding before you edit anything. I ran the whole sequence on 3.0.5, which both current Ubuntu LTS releases
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rm deletes files and directories on Linux, and it does it permanently. Let me walk you through all the options available for safe deletion, with a terminal example for each one. What rm removes when you run it A file name is a directory entry, and that entry points at an inode which holds the
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Mojang publishes two downloads for Minecraft on Linux, and they are not the same product. The desktop launcher starts the game you play. The server jar starts a world your friends connect to, and it runs on any CPU Java supports. Java 25 is now the floor for that jar, and a launcher package built
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Vim keeps the :q you type on screen as text when the editor is in Insert mode. That is why the window looks frozen and nothing you press closes it. Press Escape once and the same two characters run as a command. Why the :q you type lands in the file as text Vim reads
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Visual Studio Code is not in the package archive of Ubuntu, Debian, Fedora, openSUSE, or Arch. Microsoft builds and signs the editor, then publishes it from its own servers. The Microsoft repository and the Snap Store both update the editor for you. A .deb or .rpm file you install by hand stays at the version
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Ubuntu ships with the root account locked, so on a default install there is no root password to recover. Resetting root means giving the account a password where it had none, or replacing one that no longer works. The way in is the recovery shell, and the step that decides whether it works is not
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Vim’s change, replace, and substitute commands overlap on purpose, and which one you press is decided by what you already know about the edit. Replace takes a character, change takes a motion, and substitute takes a count, so the command whose argument you can already name is the one I reach for. What separates change,
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A successful restart prints nothing, so anyone who needs to start, stop or restart a service in Linux ends up reading the status output. I read that output as three separate answers, covering what is running right now, what will come back after a reboot, and whether the process picked up the change you made.
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The two questions arrive together when you restart a Linux machine from a terminal. Which command is the right one, and does the choice matter? The names you learned are one program on a systemd box, so what separates them is not the restart itself. It is what each one tells the machine, and the
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