# List mounts
systemctl list-units --type=mount
# Override / append settings without changing original service file
# /etc/systemd/system/name.service.d/override.conf
systemctl edit name.service
# Change service settings creating a copy of the service file
# /etc/systemd/system/name.service
systemctl edit --full name.service
# Temporarily override service settings creating an override file
# /run/systemd/system/name.service.d/override.conf
systemctl edit --runtime name.service
# Inspect service file
systemctl cat name@2.service
systemctl cat name@.service
# Reload changed config
systemctl daemon-reload
# Set default environment for ALL user services
$HOME/.config/systemd/user.conf.d/override.conf
# Override user service properties
# $HOME/.config/systemd/user.control/name.service.d/50-*.conf
systemctl set-property name.service CPUWeight=200 MemoryMax=2G IPAccounting=yes
systemctl revert name.service
# Check log for service
journalctl -u name.service