backup-meta

#!/usr/bin/env bash
#
# Backup my system.
#
# Commands:
#   - prepare | pp

backup_dir=${XDG_BACKUP_HOME:?}

[[ -d $backup_dir ]] ||
    exit 1

printf -v horiz %80s
.hd() {
    printf '%s\n' "${horiz// /-}" "$1" "${horiz// /-}" 1>&2
}

apt() (
    .hd apt

    command -- sudo rm -rv -- "$backup_dir/pkgs"
    command -- mkdir -pv -- "$backup_dir/pkgs"

    cd -- "$backup_dir/pkgs" ||
        exit 1

    COLUMNS=200 command -- dpkg-query -l >./query.txt
    exec -- sudo sh -c '
        command -- apt-cache policy >./cache.txt
        command -- apt-mark showauto >./auto.txt
        command -- apt-mark showmanual >./manual.txt
        # command -- cp -v /etc/apt/trusted.gpg ./trusted.gpg
        exec apt-clone clone .
    '
)

bin() (
    .hd bin

    exec -- find /var/lib/dpkg/info/ \
        -daystart \( -name \*.list -a -mtime -7 \) \
        -printf '%f\n' |
        exec -- sed 's:.list$::' |
        command -- sort >"$backup_dir/7_days.txt"

    IFS=:
    set -f

    exec -- whatis -w \* $PATH /usr/bin/X11 2>&1 |
        exec -- sort -u >"$backup_dir/whatis.txt"
)

# init() (
#     .hd init

#     {
#         command -- find /etc/init.d/ -perm /111 -type f -printf '%f\n'
#         exec -- find /etc/init -type f -printf '%f\n'
#     } |
#         exec -- sort -u >"$backup_dir/init.txt"
# )

cclean() (
    .hd cclean

    exec -- cclean
)

etckeeper() (
    .hd etckeeper

    cd / ||
        exit 1

    printf -v d %\(%s\)T -1
    exec -- sudo etckeeper commit "$d prepare backup"
)

case $1 in
    prepare | pp)
        apt
        bin
        cclean
        etckeeper
        ;;
esac

# vim: set ft=zsh :