How to access environment variables inside .gdbinit and inside gdb itself?

Question

I am looking to set up the path for the source code when debugging with gdb. I chose to do that with a .gdbinit file.

Basically, it contains a command:

d         


        

Answer 1

In my case I'd like to set global history in common $HOME/.gdbinit, so I used

set history filename ~/.gdb_history

instead of

set history filename $HOME/.gdb_history