On Fri, 27 Jun 1997, Jochen Scharrlach wrote:

> * when called as `sh' bash behaves just like a `sh'

Not quite.  It still allows you to use bash-isms.  I don't know if bash
even _has_ a facility to behave exactly like `sh'.  Here's an example; on
kings-cross /bin/sh is a link to bash, and on hammer it's a real Bourne
shell.

kings-cross:~$ sh
kings-cross:~$ echo $(echo foo)
foo
kings-cross:~$

hammer:~$ sh
\h:\w\$ echo $(echo foo)
syntax error: `(' unexpected
\h:\w\$

p.