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You can combine these with the -f switch above to start monitoring in real-time.

Here are some specific journalctl commands you can use for several cases. You can also monitor respective systemd services and logs in real-time using the following command. The systemd provides journal services via journalctl, which helps to manage logs from all systemd services. The systemd provides a basic framework and components which runs Linux operating system in general. A note about journalctl of systemdĪll modern Linux distributions today use systemd, mostly. Once installed, you can run lnav from a terminal with admin privilege, and it will show all the logs from /var/log by default and start monitoring in real-time. Using lnav you can query the log files via SQL, among other cool features you can learn on its official website. No setup is required, plus loaded with features. The good thing about lnav is that if you do not want to install it, you can download its pre-compiled executable and run it anywhere, even from a USB stick. You can install it using the below command: sudo apt install lnav (Ubuntu) This is not installed by default in Linux systems. jigdo files (including for the alternative server ISO), the preinstalled images, and manifest and checksum files for everything offered there.The lnav is an excellent utility which you can use to monitor log files in a more structured way with colour-coded messages. This is in contrast to the server ISOs offered at, which have names like ubuntu-18.04.3-live-server-amd64.iso and use curtin. The alternative server ISOs have names like ubuntu-18.04.3-server-arm64.iso this indicates they use debian-installer. The link there for 18.04.3 LTS takes you to.

This is in contrast to the more recently introduced live server images, which use curtin. On the main download page, the Use the traditional installer link takes you to a section for the "Alternative Ubuntu Server installer." These are the non-live ISO images for Ubuntu Server that use debian-installer (as Ubuntu Server has used exclusively for most of its history).

You most likely want ubuntu-18.04.3-server-amd64.iso, though other architectures are available. There is no need to use media for an earlier point release. Ubuntu Server ISO images with debian-installer continue to be available, including for 18.04.3 LTS.