Login loop

[floatint_]

I was trying to fix an issue I had with an application. I found that if I ran this, in a .sh file:

nautilus . &
killall nautilus
exit 0

it would fix my error. So I then put the .sh file in /etc/profile.d so it would run when I log in. Now when I log in, my screen turns black for a second, then I am back on my login screen. I tried logging in with the terminal, but same issue. A welcoming message appears for a split second, then the terminal clears and I am back on the login prompt. Have I messed up so bad that I need to reinstall my OS, or is this fixable? I am completely new to linux so I was oblivious to what would happen. 

[Ralphred]

57 minutes ago, floatint_ said:

exit 0

Is 'killing' your login terminal. Boot to recovery mode (or use a live USB) and move it out of profile.d, and be sure to test login scripts using ~/.bash_profile so you can still log in as root to fix them in future.

[floatint_]

49 minutes ago, Ralphred said:

Is 'killing' your login terminal. Boot to recovery mode (or use a live USB) and move it out of profile.d, and be sure to test login scripts using ~/.bash_profile so you can still log in as root to fix them in future.

Oh, thank you. I will keep this in mind if this ever happens again.