gw installation script

install to $GWS/opt/

scripts/gw-install.sh

@@ -2,11 +2,23 @@
 
 # https://github.com/To-da/gdub
 
-set -x
 set -e
+set -u
 
-cd $HOME/src/other
-git clone https://github.com/To-da/gdub.git
-cd gdub
-sudo ./install
+readonly REPO="https://github.com/To-da/gdub.git"
+readonly GW_PATH="$LWS/opt/gdub"
+readonly GW_BIN="$GW_PATH/bin/gw"
+readonly OPT_BIN_PATH="$LWS/opt/bin"
+
+if [[ -f "$OPT_BIN_PATH/gw" ]]; then
+  echo "gw already installed"
+  exit 0
+fi
+if [[ ! -d "$GW_PATH" ]]; then
+  git clone "$REPO" "$GW_PATH"
+fi
+if [[ ! -d "$OPT_BIN_PATH" ]]; then
+  mkdir "$OPT_BIN_PATH"
+fi
+cp "$GW_BIN" "$OPT_BIN_PATH/"