How can you access the base filename of a file you are sourcing in Bash?

Question

I am sourcing a file in a bash terminal that needs to export some environment varibles.

Example:

source linux_x86.env

the env file looks kinda like this:

export ARCH=/home/user/project/linux_x86

I have a bunch of different architectures to compile for and I want be able to do something like this:

export ARCH=/home/user/project/`basename $0 .env`

where basename $0 .env would give me the basename the env file

bash linux_x86.env
linux_x86

The above will work is a bash script but doesn't seem to work when you source the file.

Is there any way to get the same behavior from source?

Answer 1

See Getting the source directory of a Bash script from within, particularly the comment regarding the BASH_SOURCE variable.

Summary: SCRIPT_NAME=$(basename ${BASH_SOURCE[0]})