Upload files to "/"

system-update

@@ -0,0 +1,79 @@
+#!/usr/bin/env bash
+
+set -Eeo pipefail
+trap 's=$?; echo >&2 "$0: Error on line "$LINENO": $BASH_COMMAND"; exit $s' ERR
+
+
+declare -r PATH_TO_SNAPSHOT_DIRECTORY='/.snapshots'
+declare -r MAX_AGE_DAYS=14
+declare -r SECONDS_IN_DAY=$((24 * 60 * 60))
+
+function update {
+
+    local snapshot_name
+    snapshot_name=$(date --iso-8601=seconds)
+
+    local path_to_snapshot="${PATH_TO_SNAPSHOT_DIRECTORY}/${snapshot_name}"
+
+    btrfs subvolume snapshot -r / "${path_to_snapshot}"
+
+    su --shell /bin/sh --command 'paru -Syu --noconfirm --noprogressbar' system-updater
+}
+
+function cleanup_snapshots {
+
+    function get_file_age_days {
+
+        local file_name=$1
+
+        local current_date_epoch
+        current_date_epoch=$(date +%s)
+
+        local file_creation_date_epoch
+        file_creation_date_epoch=$(date --date="${file_name}" +%s)
+
+
+        local file_age_days=$(( (current_date_epoch - file_creation_date_epoch) / SECONDS_IN_DAY ))
+
+        printf '%u' "${file_age_days}"
+    }
+
+
+    for path_to_snapshot in $(find ${PATH_TO_SNAPSHOT_DIRECTORY}/* -prune -print | sort -r); do
+
+        local snapshot_name
+        snapshot_name=$(basename "${path_to_snapshot}")
+
+        local age_days
+        age_days=$(get_file_age_days "${snapshot_name}")
+
+        if [ "${age_days}" -lt ${MAX_AGE_DAYS} ]; then
+            printf "Skipping '%s'. Age in days is %u\n" "${path_to_snapshot}" "${age_days}"
+        else
+            btrfs subvolume delete "${path_to_snapshot}"
+        fi
+    done
+}
+
+if [ "${EUID}" -ne 0 ]; then
+    printf 'You must run the script with root privileges\n'
+    exit 1
+fi
+
+case "${1}" in
+    '--update') 
+        update
+        cleanup_snapshots
+    ;;
+    '--cleanup')
+        cleanup_snapshots
+    ;;
+    *)
+        printf 'Usage: system-update options\n'
+        printf '\n'
+        printf 'Options:\n'
+        printf '    --update        Create btrfs snapshot of root subvolume, update system using paru, cleanup snapshots\n'
+        printf '    --cleanup       Cleanup snapshots\n\n'
+        printf '\n'
+    ;;
+esac