Messages in this thread | | | Subject | Re: [patch 2.6.23-git] toplevel Makefile/depmod bugfix | From | Roland Dreier <> | Date | Fri, 19 Oct 2007 22:44:46 -0700 |
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> 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).
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