GNU Bash shell startup files

Hi all.

I had an idea of include (in every startup file of the GNU Bash -
version 5.3.0) an "echo" line as the last command to be executed.
Below is the output of that "echo" commands:

Successful login

read file '/etc/profile'
read file '/etc/bashrc'
read file '/root/.bashrc'
read file '/root/.bash_profile'


su --login

read file '/etc/profile'
read file '/etc/bashrc'
read file '/root/.bashrc'
read file '/root/.bash_profile'


su

read file '/etc/bashrc'
read file '/root/.bashrc'


Some conclusions:

Conclusion one: regardless it be 'login shell' or a 'non login shell',
the '/etc/bashrc' and the '$HOME/.bashrc' files _always are read_ and
in that order.

Conclusion two: the '/etc/.bash_profile' is the _last file read_ after
a successful login using the program '/usr/bin/login'.

Conclusion three: the '$HOME/.profile' file is _not read_ at all
(considering the defaults of the Beyond Linux From Scratch).

Conclusion four: the '/etc/bashrc' file, which already is always read,
is sourced again in the '$HOME/.bashrc' file (again, considering the
defaults of the Beyond Linux From Scratch).

Meanwhile, inside the GNU Screen (which fits into the 'non login
shell' category), the 'completions' of the GNU Bash are not working
(considering the 'stock' files).

My best guess is: no longer source the '/etc/bashrc', as it already is
read by bash and source the '$HOME/.profile' (which should contain the
proper source commands of the bash completions).

That is it.

Jamenson Ferreira Espindula de Almeida Melo
Jaboatão dos Guararapes, Pernambuco, Brazil
GNU/Linux user #166197; LFS ID 24492
Key fingerprint: 234D 1914 4224 7C53 BD13 6855 2AE0 25C0 08A8 6180

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