first commit

ubuntu/scripts/cleanup.sh

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+#!/bin/sh -eux
+
+echo "remove linux-headers"
+dpkg --list \
+  | awk '{ print $2 }' \
+  | grep 'linux-headers' \
+  | xargs apt-get -y purge;
+
+echo "remove specific Linux kernels, such as linux-image-3.11.0-15-generic but keeps the current kernel and does not touch the virtual packages"
+dpkg --list \
+    | awk '{ print $2 }' \
+    | grep 'linux-image-.*-generic' \
+    | grep -v `uname -r` \
+    | xargs apt-get -y purge;
+
+echo "remove old kernel modules packages"
+dpkg --list \
+    | awk '{ print $2 }' \
+    | grep 'linux-modules-.*-generic' \
+    | grep -v `uname -r` \
+    | xargs apt-get -y purge;
+
+echo "remove linux-source package"
+dpkg --list \
+    | awk '{ print $2 }' \
+    | grep linux-source \
+    | xargs apt-get -y purge;
+
+echo "remove all development packages"
+dpkg --list \
+    | awk '{ print $2 }' \
+    | grep -- '-dev\(:[a-z0-9]\+\)\?$' \
+    | xargs apt-get -y purge;
+
+echo "remove docs packages"
+dpkg --list \
+    | awk '{ print $2 }' \
+    | grep -- '-doc$' \
+    | xargs apt-get -y purge;
+
+echo "remove X11 libraries"
+apt-get -y purge libx11-data xauth libxmuu1 libxcb1 libx11-6 libxext6;
+
+echo "remove obsolete networking packages"
+apt-get -y purge ppp pppconfig pppoeconf;
+
+echo "remove packages we don't need"
+apt-get -y purge popularity-contest command-not-found friendly-recovery bash-completion fonts-ubuntu-font-family-console laptop-detect motd-news-config usbutils grub-legacy-ec2
+
+# 21.04+ don't have this
+echo "remove the installation-report"
+apt-get -y purge popularity-contest installation-report || true;
+
+echo "remove the console font"
+apt-get -y purge fonts-ubuntu-console || true;
+
+echo "removing command-not-found-data"
+# 19.10+ don't have this package so fail gracefully
+apt-get -y purge command-not-found-data || true;
+
+# Exclude the files we don't need w/o uninstalling linux-firmware
+echo "Setup dpkg excludes for linux-firmware"
+cat <<_EOF_ | cat >> /etc/dpkg/dpkg.cfg.d/excludes
+#BENTO-BEGIN
+path-exclude=/lib/firmware/*
+path-exclude=/usr/share/doc/linux-firmware/*
+#BENTO-END
+_EOF_
+
+echo "delete the massive firmware files"
+rm -rf /lib/firmware/*
+rm -rf /usr/share/doc/linux-firmware/*
+
+echo "autoremoving packages and cleaning apt data"
+apt-get -y autoremove;
+apt-get -y clean;
+
+echo "remove /usr/share/doc/"
+rm -rf /usr/share/doc/*
+
+echo "remove /var/cache"
+find /var/cache -type f -exec rm -rf {} \;
+
+echo "truncate any logs that have built up during the install"
+find /var/log -type f -exec truncate --size=0 {} \;
+
+echo "blank netplan machine-id (DUID) so machines get unique ID generated on boot"
+truncate -s 0 /etc/machine-id
+
+echo "remove the contents of /tmp and /var/tmp"
+rm -rf /tmp/* /var/tmp/*
+
+echo "force a new random seed to be generated"
+rm -f /var/lib/systemd/random-seed
+
+echo "clear the history so our install isn't there"
+rm -f /root/.wget-hsts
+export HISTSIZE=0

ubuntu/scripts/hyperv.sh

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+#!/bin/sh -eux
+ubuntu_version="`lsb_release -r | awk '{print $2}'`";
+major_version="`echo $ubuntu_version | awk -F. '{print $1}'`";
+
+case "$PACKER_BUILDER_TYPE" in
+hyperv-iso)
+  echo "installing packaging for hyper-v"
+  if [ "$major_version" -eq "16" ]; then
+    apt-get install -y linux-tools-virtual-lts-xenial linux-cloud-tools-virtual-lts-xenial;
+  else
+    apt-get -y install linux-image-virtual linux-tools-virtual linux-cloud-tools-virtual;
+  fi
+esac

ubuntu/scripts/networking.sh

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+#!/bin/sh -eux
+
+ubuntu_version="`lsb_release -r | awk '{print $2}'`";
+major_version="`echo $ubuntu_version | awk -F. '{print $1}'`";
+
+if [ "$major_version" -ge "18" ]; then
+echo "Create netplan config for eth0"
+cat <<EOF >/etc/netplan/01-netcfg.yaml;
+network:
+  version: 2
+  ethernets:
+    eth0:
+      dhcp4: true
+EOF
+else
+  # Adding a 2 sec delay to the interface up, to make the dhclient happy
+  echo "pre-up sleep 2" >> /etc/network/interfaces;
+fi
+
+# Disable Predictable Network Interface names and use eth0
+[ -e /etc/network/interfaces ] && sed -i 's/en[[:alnum:]]*/eth0/g' /etc/network/interfaces;
+sed -i 's/GRUB_CMDLINE_LINUX="\(.*\)"/GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0 \1"/g' /etc/default/grub;
+update-grub;

ubuntu/scripts/update.sh

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+#!/bin/sh -eux
+export DEBIAN_FRONTEND=noninteractive
+
+echo "disable release-upgrades"
+sed -i.bak 's/^Prompt=.*$/Prompt=never/' /etc/update-manager/release-upgrades;
+
+echo "disable systemd apt timers/services"
+systemctl stop apt-daily.timer;
+systemctl stop apt-daily-upgrade.timer;
+systemctl disable apt-daily.timer;
+systemctl disable apt-daily-upgrade.timer;
+systemctl mask apt-daily.service;
+systemctl mask apt-daily-upgrade.service;
+systemctl daemon-reload;
+
+# Disable periodic activities of apt to be safe
+cat <<EOF >/etc/apt/apt.conf.d/10periodic;
+APT::Periodic::Enable "0";
+APT::Periodic::Update-Package-Lists "0";
+APT::Periodic::Download-Upgradeable-Packages "0";
+APT::Periodic::AutocleanInterval "0";
+APT::Periodic::Unattended-Upgrade "0";
+EOF
+
+echo "remove the unattended-upgrades and ubuntu-release-upgrader-core packages"
+rm -rf /var/log/unattended-upgrades;
+apt-get -y purge unattended-upgrades ubuntu-release-upgrader-core;
+
+echo "update the package list"
+apt-get -y update;
+
+echo "upgrade all installed packages incl. kernel and kernel headers"
+apt-get -y dist-upgrade -o Dpkg::Options::="--force-confnew";
+
+reboot

ubuntu/scripts/vmware.sh

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+#!/bin/sh -eux
+
+case "$PACKER_BUILDER_TYPE" in
+vmware-iso|vmware-vmx)
+    echo "install open-vm-tools"
+    apt-get install -y open-vm-tools;
+    mkdir /mnt/hgfs;
+    systemctl enable open-vm-tools
+    systemctl start open-vm-tools
+    echo "platform specific vmware.sh executed";
+esac