Script to clean a CentOS 5 virtual machine for pre-packaging on Vagrant

cleanbox-centos5.sh

#!/bin/sh

usage() {
    echo ""
    echo "USAGE:"
    echo ""
    echo "    Run as root on virtual environment:"
    echo "    $0"
    echo ""
    echo "RESULTS:"
    echo ""
    echo "    - cleans transitional files"
    echo "    - removes white spaces on filesystem"
    echo ""
    exit 1
}

if [ `whoami` != "root" ]; then usage; fi
if [ $1 == "-h" ]        ; then usage; fi

echo "Stopping services..."
/etc/init.d/httpd stop
/etc/init.d/mysqld stop

echo "Unmounting project /vagrant..."
umount /vagrant 2>&1

if grep -qs "/vagrant" /proc/mounts; then
    echo "Error: project is mounted. Aborting."
    exit
fi

echo "Removing yum cache..."
yum clean packages
yum clean headers
yum clean metadata
yum clean all

echo "Removing zero free space to aid VM compression..."
dd if=/dev/zero of=/EMPTY bs=1M
rm -f /EMPTY

echo "Remove documentation files..."
find /usr/share/doc -type f | xargs rm -f

echo "Remove VirtualBox specific files..."
rm -rf /usr/src/vboxguest* /usr/src/virtualbox-ose-guest*

# Remove Linux headers
rm -rf /usr/src/linux-headers*

echo "Removing unused locales..."
# Edit for your needs, this keeps only en*
find /usr/share/locale/{af,am,ar,as,ast,az,bal,be,bg,bn,bn_IN,br,bs,byn,ca,cr,cs,csb,cy,da,de,de_AT,dz,el,en_AU,en_CA,eo,es,et,et_EE,eu,fa,fi,fo,fr,fur,ga,gez,gl,gu,haw,he,hi,hr,hu,hy,id,is,it,ja,ka,kk,km,kn,ko,kok,ku,ky,lg,lt,lv,mg,mi,mk,ml,mn,mr,ms,mt,nb,ne,nl,nn,no,nso,oc,or,pa,pl,ps,pt_BR,qu,ro,ru,rw,si,sk,sl,so,sq,sr,sr*latin,sv,sw,ta,te,th,ti,tig,tk,tl,tr,tt,ur,urd,ve,vi,wa,wal,wo,xh,zh,zh_HK,zh_CN,zh_TW,zu} -type d -exec rm -rf {} \; > /dev/null 2>&1

echo "Removing bash history..."
unset HISTFILE
rm -f /root/.bash_history
rm -f /home/vagrant/.bash_history

echo "Clean log files..."
find /var/log -type f | while read f; do echo -ne '' > $f; done;

echo "Whiteouting root filesystem..."
count=`df --sync -kP / | tail -n1  | awk -F ' ' '{print $4}'`;
count=$((count -= 1))
dd if=/dev/zero of=/EMPTY bs=1024 count=$count
rm -f /EMPTY

echo "Whiteouting /boot filesystem..."
count=`df --sync -kP /boot | tail -n1 | awk -F ' ' '{print $4}'`;
count=$((count -= 1))
dd if=/dev/zero of=/EMPTY bs=1024 count=$count
rm -f /EMPTY