The word "source" is a bash extension: the portable version is the dot
(".") command.
Please test with the minimally failing example. For instance, with an
empty or trivial .bashrc file, does:
if [ -f ~/.bashrc ]
then
. ~/.bashrc
fi
fail? If not, the bug would seem to be other than the one you've
described. If so, please include the exact error message you received.
Also, in what way does dash "claim to be /bin/bash"? If you're referring
to the contents of the $SHELL environment variable, you can't blame dash
for that: while it's commonly misinterpreted to mean the currently
running shell, it actually is set by login (and some shells) to be the
value of the user's login shell, as specified by /etc/passwd. That is,
if your login shell is /bin/tcsh, and SHELL is currently unset, and you
run bash, bash will set SHELL to /bin/tcsh (and not /bin/bash). Dash may
possibly do the same: or it may be that it was already set by a parent
process.
** Changed in: dash (Ubuntu)
Status: Unconfirmed => Needs Info
--
Dash doesn't understand "source"
https://launchpad.net/bugs/65046
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