Add example sync script

Author: vaskas

README.md

@@ -14,6 +14,8 @@ The above makes sense if you are using J-Pilot on your desktop, and don't want t
 
 J-Pilot operates on the very same `MemoDB.pdb`, `ToDoDB.pdb`, `DatebookDB.pdb`, `AddressDB.pdb` files you have on your Palm. Which means you can edit the records, then save them back to the device. 
 
+See `pimsync.example.sh` for an example sync script.
+
 ## Thanks
 
 * Alexander Pruss for [MyInstall](https://www.pruss.mobi/dl/) with its VFS code.

pimsync.example.sh

@@ -0,0 +1,45 @@
+#!/bin/sh
+
+# DISCLAIMER: This script comes without any warranty.
+# It works for me but may not work for you. Back your data up first!
+
+CARD_DIR="/run/media/$USER/palmOne 128"
+JPILOT_DIR="$HOME/.jpilot"
+
+ps_dir="$CARD_DIR/PIMSync"
+
+for i in AddressDB DatebookDB MemoDB ToDoDB; do
+  pdb_file="$i".pdb
+  pc3_file="$i".pc3
+
+  # Check if local changes are present in J-Pilot
+  if [ -f "$JPILOT_DIR"/$pc3_file ] && [ -s "$JPILOT_DIR"/$pc3_file ]; then
+
+    # Back up local and card PDBs
+    mkdir -p "$JPILOT_DIR"/pimsync_backup_local
+    mkdir -p "$JPILOT_DIR"/pimsync_backup_card
+
+    cp "$JPILOT_DIR"/$pdb_file "$JPILOT_DIR"/pimsync_backup_local
+    cp "$JPILOT_DIR"/$pc3_file "$JPILOT_DIR"/pimsync_backup_local
+
+    cp "$ps_dir"/$pdb_file "$JPILOT_DIR"/pimsync_backup_card
+
+    # Merge local changes into card versions
+    echo -e "\nMerging $pdb_file:"
+    jpilot-merge "$ps_dir"/$pdb_file "$JPILOT_DIR"/$pc3_file \
+      "$JPILOT_DIR"/$pdb_file
+    rm "$JPILOT_DIR"/$pc3_file
+
+    # Overwrite card versions with merged databases
+    echo "Overwriting card $pdb_file"
+    cp "$JPILOT_DIR"/$pdb_file "$ps_dir"/$pdb_file
+
+  else
+    echo "Overwriting local $pdb_file"
+    cp "$ps_dir"/$pdb_file "$JPILOT_DIR"/$pdb_file
+  fi
+
+done
+
+echo "Done"
+