[Unit]
Description=Run script to set up environment
Before=getty@1.service getty@2.service getty@3.service getty@4.service getty@5.service getty@6.service

[Service]
Type=oneshot
ExecStart=/bin/myscript

[Unit]
Description=Run script to set up environment

[Service]
Type=oneshot
ExecStartPre=/bin/touch /etc/no-login-console
ExecStart=/bin/myscript
ExecStopPost=/bin/rm /etc/no-login-console

[Unit]
ConditionPathExists=!/etc/no-login-console