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Author SHA1 Message Date
cf85357f5c
sh: Add minimum version checker
Added another building block program. This program will be required
going forward in other modules. `version_at_least` takes two version
numbers and returns true if the second is higher than the first.

That means primarily it is useful to check if a program fulfills a
minimum required version, e.g.: `version_at_least 2.1 $(my_program -v)`.
Will be primarily useful for git version checking in the near future.

It has a second possibility of checking for ordered version numbers
passed in but this is of less use. Check source for more information.
2021-11-23 10:30:57 +01:00