Debian Lenny Bash update

#first find out the version you have so you know what to get for the patches and source files
dpkg-query -l|grep bash
ii bash 4.1-3 The GNU Bourne Again SHell

#do this in the /usr/src dir
cd /usr/src
wget http://ftp.gnu.org/gnu/bash/bash-4.1.tar.gz
tar zxvf bash-4.1.tar.gz
cd bash-4.1

# fetch all patches, including latest ones that patches CVE-2014-6271
for i in $(seq -f "%03g" 0 14); do
wget -nv http://ftp.gnu.org/gnu/bash/bash-4.1-patches/bash41-$i
patch -p0 < bash41-$i
done

# check if yacc is installed. if not - install yacc
apt-get install bison

# configure,compile and install bash (this will install bash into /usr/local/bin/bash)
./configure && make
make install

# make a symlink from /bin/bash to the new binary
mv /bin/bash /bin/bash.old
ln -s /usr/local/bin/bash /bin/bash

# check that you're not vulnerable anymore wiith the output of the following
# it should not output vulnerable word anymore
env x='() { :;}; echo vulnerable' bash -c echo

#you can  Delete the old one thats a problem
rm /bin/bash.old