How to root your the Nexus S

I am going to assume that you have already unlocked your bootloader, and you have the basic knowledge of how to use adb.

I will show you in a few short steps how to gain root on your Nexus S without having to wipe.

1. Extract the zip from below
2. Open your shell/command line window and change directory (cd) to where your system folder from the zip is located
3. In your shell/command line window type: adb remount
4. Now type: adb push system/ system/
5. We need to set the permission on the su file to be executable, to do so enter the following: adb shell
   
   • chmod 6775 /system/bin/su
   • Now we will exit adb shell by typing: exit
6. Last but not least, type: adb reboot

At this point your Nexus S will reboot and you should have root.