Added galaxy-s5-backup and fix-fileshare-permissions.

fix-fileshare-permissions

@@ -0,0 +1,8 @@
+#!/usr/bash
+
+test_dir='/media/hoard-disk/ebooks'
+
+sudo chown root:root "$test_dir"
+sudo chmod 600 "$test_dir"
+sudo setfacl -Rm 'group:fileshare:r-x' "$test_dir"
+sudo setfacl -Rm 'group:fileshare-admin:rwx' "$test_dir"

galaxy-s5-backup.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+PARTITION_DIRECTORY="/dev/block/platform/msm_sdcc.1/by-name"
+
+current_date="$(date +%Y%m%d)"
+
+function backup_partition {
+    partition_path="$1"
+    partition_name="$(basename "${partition_path}")"
+    echo "Backing up partition ${partition_name}."
+
+    backup_image_name="${partition_name}-${current_date}.img"
+    echo "Copying partition."
+    adb shell "base64 < \"${partition_path}\"" | base64 -di > "$backup_image_name"
+
+    echo "Hashing backup image."
+    sha256sum "$backup_image_name" > "${backup_image_name}.SHA256SUM"
+    backup_hash=$(cut -d ' ' -f 1 < "${backup_image_name}.SHA256SUM")
+
+    echo "Hashing original image."
+    original_hash=$(adb shell "sha256sum ${partition_path}" | cut -d ' ' -f 1)
+
+    if [ "$original_hash" = "$backup_hash" ]; then
+        echo "Backup successful."
+    else
+        echo "Backup of partition ${partition_name} failed."
+    fi
+}
+
+# Technically this is a bit fragile, but the partition names don't break it and aren't going
+# to change anytime soon and this is much easier to read than the super safe solution.
+for partition_path in $(find "${PARTITION_DIRECTORY}"); do
+    backup_partition "$partition_path"
+done