Linux Workshop

# Boot-Informationen
dmesg                           # Kernel-Boot-Messages
dmesg | grep -i error           # Boot-Fehler
dmesg | grep -i firmware        # Firmware-Meldungen

# Systemd-Services
systemctl list-units            # Alle Units
systemctl list-units --failed   # Fehlgeschlagene Services
systemctl status                # System-Status
journalctl -b                   # Boot-Log

# Runlevel/Targets
systemctl get-default               # Standard-Target
systemctl list-units --type=target  # Verfügbare Targets

# Init-System
cat /proc/1/comm                    # Init-System (systemd, init, etc.)
ps -p 1                             # Init-Prozess

# Boot-Zeit-Analyse
systemd-analyze                  # Boot-Zeit (falls systemd)
systemd-analyze blame            # Längste Boot-Services

# Weitere Log-Tools
[[sammlung:journalctl|journalctl - Systemd Journal-Analyse]]