Added: KERNEL_REDUCE - less than 128MB used space, Added: REDUCE_ parameters

1 files changed, 72 insertions, 0 deletions

diff --git a/bootstrap.d/99-reduce.sh b/bootstrap.d/99-reduce.sh
new file mode 100644
index 0000000..f3b2848
--- /dev/null
+++ b/bootstrap.d/99-reduce.sh
@@ -0,0 +1,72 @@
+#
+# Reduce system disk usage
+#
+
+# Load utility functions
+. ./functions.sh
+
+# Reduce the image size by various operations
+if [ "$ENABLE_REDUCE" = true ] ; then
+  if [ "$REDUCE_APT" = true ] ; then
+    # Install dpkg configuration file
+    if [ "$REDUCE_DOC" = true ] || [ "$REDUCE_MAN" = true ] ; then
+      install_readonly files/dpkg/01nodoc "$R/etc/dpkg/dpkg.cfg.d/01nodoc"
+    fi
+
+    # Install APT configuration files
+    install_readonly files/apt/02nocache "$R/etc/apt/apt.conf.d/02nocache"
+    install_readonly files/apt/03compress "$R/etc/apt/apt.conf.d/03compress"
+    install_readonly files/apt/04norecommends "$R/etc/apt/apt.conf.d/04norecommends"
+
+    # Remove APT cache files
+    rm -fr "$R/var/cache/apt/pkgcache.bin"
+    rm -fr "$R/var/cache/apt/srcpkgcache.bin"
+  fi
+
+  # Remove all doc files
+  if [ "$REDUCE_DOC" = true ] ; then
+    find "$R/usr/share/doc" -depth -type f ! -name copyright | xargs rm || true
+    find "$R/usr/share/doc" -empty | xargs rmdir || true
+  fi
+
+  # Remove all man pages and info files
+  if [ "$REDUCE_MAN" = true ] ; then
+    rm -rf "$R/usr/share/man" "$R/usr/share/groff" "$R/usr/share/info" "$R/usr/share/lintian" "$R/usr/share/linda" "$R/var/cache/man"
+  fi
+
+  # Remove all locale translation files
+  if [ "$REDUCE_LOCALE" = true ] ; then
+    find "$R/usr/share/locale" -mindepth 1 -maxdepth 1 ! -name 'en' | xargs rm -r
+  fi
+
+  # Remove hwdb PCI device classes (experimental)
+  if [ "$REDUCE_HWDB" = true ] ; then
+    rm -fr "/lib/udev/hwdb.d/20-pci-*"
+  fi
+
+  # Replace bash shell by dash shell (experimental)
+  if [ "$REDUCE_BASH" = true ] ; then
+    echo "Yes, do as I say!" | chroot_exec apt-get purge -qq -y --force-yes bash
+    chroot_exec update-alternatives --install /bin/bash bash /bin/dash 100
+  fi
+
+  # Remove sound utils and libraries
+  if [ "$ENABLE_SOUND" = false ] ; then
+    chroot_exec apt-get -qq -y --force-yes purge alsa-utils libsamplerate0 libasound2 libasound2-data
+  fi
+
+  # Re-install tools for managing kernel moduless
+  chroot_exec apt-get -qq -y --force-yes install module-init-tools
+
+  # Remove GPU kernels
+  if [ "$ENABLE_MINGPU" = true ] ; then
+    rm -f "$R/boot/firmware/start.elf"
+    rm -f "$R/boot/firmware/fixup.dat"
+    rm -f "$R/boot/firmware/start_x.elf"
+    rm -f "$R/boot/firmware/fixup_x.dat"
+  fi
+
+  # Clean APT list of repositories
+  rm -fr "$R/var/lib/apt/lists/*"
+  chroot_exec apt-get -qq -y update
+fi