On a "standard BASH" does a wildcard inside double-quotes glob? For example:
$ touch abc $ ls "*abc*"
would that, or wouldn't that work on bash?
I was told Ubuntu shipped with a bash variant that doesn't conform to POSIX or BASH. Is that true?
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Short answer: no
Long answer from man bash:
Enclosing characters in double quotes preserves the literal value of all characters within the quotes, with the exception of $, `, \
Of course when talking about double quotes and asterisks there is another exception: parameter expansion (ie: "$*") ...but that's another history
For the second question: are you asking about dash? dash is a lightweight shell for scripts. In debian, and in ubuntu per extension (as is debian based), is aliased to sh; It's major advantage over bash is its speed, so it is used by default for system scripts; however bash is still available as the interactive shell for users by default