how to run terminal when user login

You can do this without GUI:

1. On your terminal, navigate to .config/autostart directory. .config/autostart may be in your home directory:

cd ~/.config/autostart

2. Open the (new) gnome-terminal.desktop file with your favourite text editor. I use vi:

vi gnome-terminal.desktop

3. Paste the following code in the file. Update some lines if you like as you find suitable, or simply use as is:

[Desktop Entry]
Type=Application
Exec=gnome-terminal
Hidden=false
NoDisplay=false
X-GNOME-Autostart-enabled=true
Name[en_NG]=Terminal
Name=Terminal
Comment[en_NG]=Start Terminal On Startup
Comment=Start Terminal On Startup

4. Save the file, and you’re done.

If you need the terminal to both start and run a custom shell script command, edit the gnome-terminal.desktop file and change the line that goes Exec=gnome-terminal to Exec=gnome-terminal --command "path/to/your/shell/script".