> I guess GNU `ln -fb a b' and `cp -flb a b' are broken then. They fail if
> `b' and `b~' point to the same file, which is quite likely in these cases.
> `ln -f a b' and `cp -fl a b' are fine.
Note that the above POSIX text is only relevant for the _system_call_.
What POSIX.2 says about the behaviour of the "ln"/"cp" commands is another
issue. I agree with you that it would _seem_ like their behaviour is less
than desireable, but whether it is a bug is not clear.
LN(1) LN(1)
NAME
ln - make links between files
SYNOPSIS
ln [options] source [dest]
ln [options] source... directory
POSIX options: [-f]
GNU options (shortest form): [-bdfinsvF] [-S backup-suf
fix] [-V {numbered,existing,simple}] [--help] [--version]
[--]
...
In other words: -b is a GNU extension. There is no POSIX.2 requirement on -b.
The same holds for cp.
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