如何运行最后一次并在启动期间使用systemd打印我的脚本输出？

Question

I'm trying to configure my host during deployment process and to give an output to the screen of what my configuration script is doing.

In RHEL6 it was easy i was echoing what I want to screen or used dialog to display the output, and only when my script was done i got the login prompt.

• ( I used rc3.d or rc5.d folder with script name S99.myscript.sh)

In RHEL7 i can't mimic this process. rc.local does not display my output during booting and also its not guaranteed it will run last.

I guess I need to create a systemd service file that will run my script.

But how do I output the result to the screen while booting?

And how do I make sure I will not get the log-in prompt before my script ends?

Answer 1

below service example works like a charm :)

 [Unit] Description=ldt_bootscript1.service After=network.target Before=getty@tty1.service [Service] Type=oneshot ExecStart=/bin/bash -c "/bin/bash /tmp/ldt_scripts/postinstall/rc.firstboot.qas | /usr/bin/dialog --clear --backtitle \\"Linux Deployment\\" --title \\"tests\\" --progressbox 20 70 > /dev/console 2>&1" ExecStartPre=/usr/bin/echo -e \\033%G ExecReload=/bin/kill -HUP $MAINPID RemainAfterExit=no WorkingDirectory=/ Environment=TERM=xterm [Install] WantedBy=multi-user.target