Improve the Shell code style.

tools/run.sh

@@ -41,21 +41,21 @@ _cleanup() {
     jekyll clean
   fi
 
-  rm -rf ${WORK_DIR}/${CONTAINER}
+  rm -rf "${WORK_DIR}/${CONTAINER}"
   ps aux | grep fswatch | awk '{print $2}' | xargs kill -9 > /dev/null 2>&1
 }
 
 
 _init() {
 
-  if [[ -d ${WORK_DIR}/${CONTAINER} ]]; then
-    rm -rf ${WORK_DIR}/${CONTAINER}
+  if [[ -d "${WORK_DIR}/${CONTAINER}" ]]; then
+    rm -rf "${WORK_DIR}/${CONTAINER}"
   fi
 
-  temp=$(mktemp -d)
-  cp -r ${WORK_DIR}/* $temp
-  cp -r ${WORK_DIR}/.git $temp
-  mv $temp ${WORK_DIR}/${CONTAINER}
+  temp="$(mktemp -d)"
+  cp -r "$WORK_DIR"/* "$temp"
+  cp -r "${WORK_DIR}/.git" "$temp"
+  mv "$temp" "${WORK_DIR}/${CONTAINER}"
 
   trap _cleanup INT
 }
@@ -70,7 +70,7 @@ _check_unset() {
 
 
 _check_command() {
-  if [[ -z $(command -v $1) ]]; then
+  if [[ -z $(command -v "$1") ]]; then
     echo "Error: command '$1' not found !"
     echo "Hint: Get '$1' on <$2>"
     exit 1
@@ -81,16 +81,16 @@ _check_command() {
 main() {
   _init
 
-  cd ${WORK_DIR}/${CONTAINER}
+  cd "${WORK_DIR}/${CONTAINER}"
   bash _scripts/sh/create_pages.sh
   bash _scripts/sh/dump_lastmod.sh
 
   if [[ $realtime = true ]]; then
-    fswatch -0 -e "\\$CONTAINER" -e "\.git" ${WORK_DIR} | xargs -0 -I {} bash ./${SYNC_TOOL} {} $WORK_DIR . &
+    fswatch -0 -e "\\$CONTAINER" -e "\.git" "$WORK_DIR" | xargs -0 -I {} bash "./${SYNC_TOOL}" {} "$WORK_DIR" . &
   fi
 
   echo "\$ $cmd"
-  eval $cmd
+  eval "$cmd"
 }
 
 
@@ -99,20 +99,20 @@ do
   opt="$1"
   case $opt in
     -H|--host)
-      _check_unset $2
+      _check_unset "$2"
       cmd+=" -H $2"
       shift # past argument
       shift # past value
       ;;
     -P|--port)
-      _check_unset $2
+      _check_unset "$2"
       cmd+=" -P $2"
       shift
       shift
       ;;
     -b|--baseurl)
-      _check_unset $2
-      if [[ $2 == \/* ]]
+      _check_unset "$2"
+      if [[ "$2" == \/* ]]
       then
         cmd+=" -b $2"
       else
@@ -127,7 +127,7 @@ do
       shift
       ;;
     -r|--realtime)
-      _check_command fswatch 'http://emcrisostomo.github.io/fswatch/'
+      _check_command fswatch "http://emcrisostomo.github.io/fswatch/"
       realtime=true
       shift
       ;;