# vim: set ft=systemd :
[Unit]
Description=Run btop on tty1
After=systemd-user-sessions.service
Conflicts=getty@tty1.service

[Service]
RuntimeDirectory=%N
LogsDirectory=%N
Environment=XDG_CONFIG_HOME=%t
Environment=LANG=en_US.UTF-8
# btop *requires* write access to its configuration file, or it won't
# even read it.  Thus, we copy the file from /etc to /run and tell
# btop to use the ephemeral, writable copy.
ExecStartPre=-/bin/cp %E/%N/btop.conf %t/%N/btop.conf
ExecStartPre=-/bin/ln -s %L/%N/btop.log %t/%N/btop.log
ExecStart=/usr/bin/btop
StandardInput=tty
StandardOutput=tty
StandardError=journal+console
TTYPath=/dev/tty1
Restart=always
CapabilityBoundingSet=
ProtectSystem=strict
DeviceAllow=/dev/tty1
DevicePolicy=closed
ProtectKernelTunables=yes
ProtectKernelModules=true
ProtectControlGroups=yes
NoNewPrivileges=yes

[Install]
WantedBy=multi-user.target