APT package offline installation

install.sh

#!/bin/bash

if [ -z "$1" ]; then
  echo "usage: ./install.sh <package name>"
  exit 0
fi

echo "Installing $1..."

tar xf "$1.tar.gz"
if [ $? -ne 0 ]; then
  echo "Error extracting archive"
  exit 1
fi

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
if [ $? -ne 0 ]; then
  echo "Error creating backup for apt source list"
  exit 1
fi

echo "deb [trusted=yes allow-insecure=true] file:$(pwd)/$1 ./" | sudo tee /etc/apt/sources.list
if [ $? -ne 0 ]; then
  echo "Error substituting apt source list"
  exit 1
fi

sudo apt-get update
sudo apt-get install -y "$1"

sudo mv /etc/apt/sources.list.bak /etc/apt/sources.list
if [ $? -ne 0 ]; then
  echo "Error restoring apt source list"
  exit 1
fi

rm -r $1

package.sh

#!/bin/bash

if [ -z "$1" ]; then
  echo "usage: ./package.sh <package name>"
  exit 0
fi

tmp_dir=$(mktemp -d -t package-XXXXXXXX)

echo "Installing inside $tmp_dir"

content_dir="$tmp_dir/$1"
mkdir -p $content_dir

pushd $content_dir

apt-get download \
	$(apt-cache depends --recurse --no-recommends --no-suggests --no-conflicts \
		--no-breaks --no-replaces --no-enhances $1 \
		| grep "^\w" | sort -u)
if [ $? -ne 0 ]; then
  echo "Error downloading packages"
  exit 1
fi

dpkg-scanpackages . | gzip -9c > Packages.gz
if [ $? -ne 0 ]; then
  echo "Error creating package index"
  exit 1
fi

popd

pushd $tmp_dir

tar czf "$1.tar.gz" "$1"
if [ $? -ne 0 ]; then
  echo "Error archiving packages"
fi
popd

cp "$tmp_dir/$1.tar.gz" .

rm -rf $tmp_dir