There may have been a typo when
Code:
echo "dummy:x:1000:1000::/root:/bin/bash" >> /etc/passwd
was entered (. is fairly close to / on my keyboard)
So check /etc/passwd. The dummy user's line should read "dummy:x:1000:1000::/root:/bin/bash"
I'm thinking yours reads "dummy:x:1000:1000::/root:/bin.bash"
But maybe it's something else...