plomlompom.com Git - config/blob - buster/setup_scripts/purge_nonrequireds.sh

   1 #!/bin/sh
   2 # This script removes all Debian packages that are not of Priority
   3 # "required" or not depended on by packages of priority "required"
   4 # or not listed in the argument-selected files of apt-mark/.
   5 set -e
   6
   7 config_tree_prefix="${HOME}/config/buster"
   8 aptmark_dir="${config_tree_prefix}/apt-mark"
   9
  10 dpkg-query -Wf '${Package} ${Priority}\n' | grep ' required' | sed 's/ required//' > /tmp/list_white_unsorted
  11 for target in "$@"; do
  12     path="${aptmark_dir}/${target}"
  13     cat "${path}" | while read line; do
  14         if [ ! $(echo "${line}" | cut -c1) = "#" ]; then
  15             echo "${line}" >> /tmp/list_white_unsorted
  16         fi
  17     done
  18 done
  19 sort /tmp/list_white_unsorted > /tmp/list_white
  20 dpkg-query -Wf '${Package}\n' > /tmp/list_all_packages
  21 sort /tmp/list_all_packages > /tmp/foo
  22 mv /tmp/foo /tmp/list_all_packages
  23 comm -3 /tmp/list_all_packages /tmp/list_white > /tmp/list_black
  24 apt-mark auto `cat /tmp/list_black`
  25 DEBIAN_FRONTEND=noninteractive apt-get -y --purge autoremove
  26 rm /tmp/list_all_packages /tmp/list_white_unsorted /tmp/list_white /tmp/list_black
  27
  28 # Somehow, auto-mounts get undone by all of this, so re-mount /etc/fstab.
  29 # TODO: Find out why.
  30 mount -a