update publish

publish.sh

@@ -1,17 +1,37 @@
 gitbook build . ../tmp_mysite
+if [ $? -ne 0 ]; then
+    echo "Error: GitBook build failed!"
+    exit 1
+fi
 
 function publish_to()
 {
     repo_name=$1
-    cd ../${repo_name}
-    rm -rf `ls |grep -v .git`
-    cp -r ../tmp_mysite/* ../${repo_name}
-    cd ../${repo_name}
+    target_dir="../${repo_name}"
+
+    echo "Target directory: $target_dir"
+    if [ ! -d "$target_dir" ]; then
+        echo "Error: Target directory $target_dir does not exist!"
+        exit 1
+    fi
+
+    cd "$target_dir" || exit
+
+    if [ ! -d ".git" ]; then
+        echo "Error: $target_dir is not a Git repository!"
+        exit 1
+    fi
+
+    echo "Current working directory: $(pwd)"
+
+    rm -rf `ls | grep -v .git`
+    cp -r ../tmp_mysite/* "$target_dir"
+
     git add -A
-    git commit -a -m 'update from gitbook'
+    git commit -m 'update from gitbook'
     git push
 }
 
 publish_to mysite
 
-rm -rf ../tmp_mysite
+rm -rf ../tmp_mysite