I've tried printenv, whoami, and uname to see if the “GJThinkPad” string is located in any of them. It is not.

I've also checked to see if there is a ~/.bash_profile file which might have modified the command prompt default. No such file exists.

I'm searching for other sources from which this value might have arrived. It did not used to be there, and seems fishy.

Suggestions on where to search next?