diff --git a/install_dsync.sh b/install_dsync.sh
new file mode 100644
index 0000000..f220d21
--- /dev/null
+++ b/install_dsync.sh
@@ -0,0 +1,174 @@
+#!/usr/bin/env bash
+# Install dsync from https://git.ai.infran.ru/ilyukhin/dsync.git
+#
+# Usage:
+#   ./install_dsync.sh            # install to ~/.local/bin (default)
+#   ./install_dsync.sh --system   # install to /usr/local/bin (requires sudo)
+#   ./install_dsync.sh -d DIR     # install to custom DIR
+#   ./install_dsync.sh -f         # force overwrite if target exists
+#   ./install_dsync.sh -h         # show help
+set -euo pipefail
+
+REPO_URL="https://git.ai.infran.ru/ilyukhin/dsync.git"
+RAW_BASE="https://git.ai.infran.ru/ilyukhin/dsync/-/raw"  # raw URL pattern: $RAW_BASE/<branch>/dsync
+DEFAULT_USER_DIR="$HOME/.local/bin"
+
+DEST_DIR="$DEFAULT_USER_DIR"
+FORCE=0
+
+print_help() {
+  cat <<EOF
+Install dsync from ${REPO_URL}
+
+Options:
+  -s, --system        install into /usr/local/bin (system-wide; may use sudo)
+  -d DIR, --dest DIR  install into DIR
+  -f, --force         overwrite existing file without asking
+  -h, --help          show this help
+EOF
+}
+
+# parse options
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    -s|--system)
+      DEST_DIR="/usr/local/bin"
+      shift
+      ;;
+    -d|--dest)
+      if [[ -z "${2:-}" ]]; then
+        echo "Error: missing argument for $1" >&2
+        exit 2
+      fi
+      DEST_DIR="$2"
+      shift 2
+      ;;
+    -f|--force)
+      FORCE=1
+      shift
+      ;;
+    -h|--help)
+      print_help
+      exit 0
+      ;;
+    --)
+      shift
+      break
+      ;;
+    -*)
+      echo "Unknown option: $1" >&2
+      print_help
+      exit 2
+      ;;
+    *)
+      break
+      ;;
+  esac
+done
+
+DEST_PATH="$DEST_DIR/dsync"
+
+# create temporary dir and ensure cleanup
+TMPDIR="$(mktemp -d)"
+trap 'rm -rf "$TMPDIR"' EXIT
+
+echo "Installing dsync to: $DEST_DIR"
+
+# ensure target directory exists (create with sudo if system dir)
+if [[ ! -d "$DEST_DIR" ]]; then
+  echo "Target directory $DEST_DIR does not exist — attempting to create it..."
+  if ! mkdir -p "$DEST_DIR" 2>/dev/null; then
+    echo "No permission to create $DEST_DIR, trying with sudo..."
+    if ! command -v sudo >/dev/null 2>&1; then
+      echo "sudo not available — cannot create $DEST_DIR" >&2
+      exit 1
+    fi
+    sudo mkdir -p "$DEST_DIR"
+  fi
+fi
+
+FOUND=""
+
+# 1) Try to clone repo with git (if git available)
+if command -v git >/dev/null 2>&1; then
+  echo "git found — attempting shallow clone..."
+  if git clone --depth 1 "$REPO_URL" "$TMPDIR/repo" >/dev/null 2>&1; then
+    echo "Repository cloned."
+  else
+    echo "Shallow clone failed, attempting normal clone (may show output)..."
+    git clone --depth 1 "$REPO_URL" "$TMPDIR/repo" || true
+  fi
+
+  if [[ -d "$TMPDIR/repo" ]]; then
+    FOUND="$(find "$TMPDIR/repo" -maxdepth 6 -type f -name dsync -print -quit || true)"
+  fi
+fi
+
+# 2) If git did not find the file, try to download raw file via curl (main/master)
+if [[ -z "$FOUND" ]]; then
+  if command -v curl >/dev/null 2>&1; then
+    for BR in main master; do
+      RAW_URL="$RAW_BASE/$BR/dsync"
+      echo "Trying to download raw file: $RAW_URL"
+      if curl --fail -L --max-redirs 5 -o "$TMPDIR/dsync" "$RAW_URL"; then
+        # check that downloaded file looks like text/script, not HTML error
+        if file "$TMPDIR/dsync" | grep -qE 'text|python|ASCII'; then
+          FOUND="$TMPDIR/dsync"
+          break
+        else
+          echo "Downloaded file from $RAW_URL does not look like a script - skipping."
+        fi
+      else
+        echo "Failed to download $RAW_URL (404 or error)."
+      fi
+    done
+  else
+    echo "curl not installed and git did not yield a dsync file — cannot download." >&2
+    exit 1
+  fi
+fi
+
+if [[ -z "$FOUND" ]]; then
+  echo "Could not locate dsync in the repository and raw download failed."
+  echo "Repository may be private. If it's private, ensure you have access (SSH keys or credentials)."
+  exit 1
+fi
+
+echo "Found source file at: $FOUND"
+
+# Warn if target exists
+if [[ -e "$DEST_PATH" && "$FORCE" -ne 1 ]]; then
+  echo "Error: $DEST_PATH already exists. Use --force to overwrite." >&2
+  exit 1
+fi
+
+# copy into destination (use sudo if target dir is not writable)
+if touch "$DEST_DIR/.write_test" >/dev/null 2>&1; then
+  rm -f "$DEST_DIR/.write_test"
+  cp -f "$FOUND" "$DEST_PATH"
+  chmod +x "$DEST_PATH"
+  echo "Installed: $DEST_PATH"
+else
+  echo "No write permission to $DEST_DIR — using sudo to copy and set executable bit."
+  if ! command -v sudo >/dev/null 2>&1; then
+    echo "sudo is not available — cannot write to $DEST_DIR" >&2
+    exit 1
+  fi
+  sudo cp -f "$FOUND" "$DEST_PATH"
+  sudo chmod +x "$DEST_PATH"
+  echo "Installed (via sudo): $DEST_PATH"
+fi
+
+# quick PATH check
+echo
+echo "PATH check:"
+if command -v dsync >/dev/null 2>&1; then
+  echo "dsync is found: $(command -v dsync)"
+else
+  echo "dsync was installed to $DEST_PATH but is not found in current PATH."
+  echo "Make sure $DEST_DIR is in your PATH (add to ~/.profile, ~/.bashrc or ~/.zshrc if needed):"
+  echo "  export PATH=\"$DEST_DIR:\$PATH\""
+  echo "Then run 'hash -r' (bash) or 'rehash' (zsh) or restart your shell."
+fi
+
+echo "Done."