Update borg.sh backup script with passphrase and excludes.

borg.sh

@@ -1,9 +1,29 @@
 #!/data/data/com.termux/files/usr/bin/bash
-t=`date +%d_%m_%Y`
-export BORG_UNKNOWN_UNENCRYPTED_REPO_ACCESS_IS_OK=yes
-export BORG_RELOCATED_REPO_ACCESS_IS_OK=yes
-host=angler
-dirs="/ /system /vendor /cache /persist /firmware /storage /data"
 export BORG_RSH=borg_ssh_wrapper
 source /data/data/com.termux/files/home/borgbackup_on_android/borg-env/bin/activate
-borg create -C lz4 -p -v --stats --one-file-system backup:/backup/borg/$host::$t $dirs # 2> ~/borg_backup_${t}.err
+
+
+# Avoid UnicodeError
+export LANG=en_US.UTF-8
+
+# Ask an external program to supply the repository passphrase:
+export BORG_PASSCOMMAND="cat /data/data/com.termux/files/home/borgbackup_on_android/borg-passphrase"
+
+# Set repository location
+export BORG_REPO=ssh://borg@<server>:<port>/./auto
+
+# Initialize remote repository (doesn't matter if it already is).
+borg init --encryption=repokey-blake2
+
+borg create                                     \
+    --filter AME                                \
+    --compression lz4                           \
+    --remote-ratelimit 0                        \
+                                                \
+    --exclude-caches                            \
+    --exclude '/data/data/*/cache'              \
+    --exclude '/data/data/*/code_cache'         \
+    --exclude '/data/data/*/no_backup'          \
+    --exclude '**/TWRP/BACKUPS'                 \
+    ::'{hostname}-{utcnow}'                     \
+    /system /data /storage