Simple script to create debian package

makedeb.sh

#!/bin/bash
# Distributed under the GNU GPL

# Check if user is root
if [ "$EUID" -ne 0 ]
  then echo "Please run as root"
  exit
fi

# Get path
path=`pwd`

# Copy package to tmp
rm -rf /tmp/package
mkdir -p /tmp/package
cp -a ${path}/* "/tmp/package"
chown -R root.root /tmp/$package

# validations
if [ ! -d /tmp/package/DEBIAN ]; then
  echo "Cannot found debian directory"
  exit 1
fi

if [ ! -f /tmp/package/DEBIAN/control ]; then
  echo "Cannot found control file"
  exit 1
fi


# Get info from control file
packageName=$(cat /tmp/package/DEBIAN/control | grep ^Package: | sed 's/^Package: \(.*\)/\1/' )
version=$(cat /tmp/package/DEBIAN/control | grep ^Version | sed 's/^Version: \(.*\)/\1/' )
arch=$(cat /tmp/package/DEBIAN/control | grep ^Architecture | sed 's/^Architecture: \(.*\)/\1/' )

# Set release name
releaseName=${packageName}_${version}_${arch}.deb

# Remove Unnecessary files and directories
rm -f /tmp/package/make-deb.sh
rm -f /tmp/package/.gitignore
rm -f /tmp/package/*.deb
rm -f /tmp/package/LICENSE
rm -f /tmp/package/README.md

# Create MD5 SUM
if [ -f /tmp/package/DEBIAN/md5sums ]; then
   rm -f /tmp/package/DEBIAN/md5sums
fi
find /tmp/package ! -type d -print0 | xargs -0 md5sum > /tmp/package/DEBIAN/md5sums

# Create instaled size diretive
size=$(du -s /tmp/package | cut -f 1)
sed -i "s/^\(Installed-Size:\) .*/\1 $size/" /tmp/package/DEBIAN/control 

# build package
mv /tmp/package /tmp/${packageName}
cd /tmp
dpkg-deb -Z bzip2 -b $packageName $releaseName
cd -

# save deb file
mv /tmp/${releaseName} ${path}
rm -Rf /tmp/${packageName}