Bash Callstack

callstack.sh

# If for some insane reason we really want to inspect the bash callstack
# we can use the BASH_LINENO, BASH_SOURCE and FUNCNAME variables

my_function() {

    echo "My Function Name: ${FUNCNAME[0]}, I am at line ${BASH_LINENO[0]} of file ${BASH_SOURCE[0]}"

    # Unless we call this from deeper down, we will get `main`, line 0, and the same filename as before
    echo "My Parent Function: ${FUNCNAME[1]} is at line ${BASH_LINENO[1]} of file ${BASH_SOURCE[1]}"

}