In the grub command shell, if the first command I execute is
for i in /*; do echo $i; done
What I expect is the file/directory list of my $root partition. But the result is just /* itself
Then if I execute the second command
for i in /*; do echo $i; regexp '' $i; done
I got the same result: /*
And if I execute the second command again, the result varies and I got the file list as what I expected at the beginning.
Then if I execute the first command again, the result is still the file list.
This test really shocked me, because the same command may produce different result randomly. I really wonder what is the intended behavior of * character in for statement