Hi,
So everything is bash in the end, but I do not know whether bash behaves differently if it is called under the name "sh". You could give it a try.
Yes. Search for \bsh\b in the manpage. It includes things like If bash is invoked with the name sh, it tries to mimic the startup be‐ havior of historical versions of sh as closely as possible, while con‐ forming to the POSIX standard as well. Martin