> Accoding to man bash "==" is used to test for equality and "=" is used for assignmnet.
> I assume the above is a dash syntax error (dash is default on ubuntu IIRC).
My bash man page says the following under "CONDITIONAL EXPRESSIONS":
string1 == string2
True if the strings are equal. = may be used in place
of == for strict POSIX compliance.
This is bash 3.1 as packaged by Debian.
So I think "=" is the correct thing to use for compatibility with dash
or other non-bash shells, since as far as I know, there are no
situations where a comparison with "=" will fail but "==" will succed.
(ie "=" is strictly more compatible).
- R.
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