diff --git a/data/computercraft/lua/rom/programs/applist.lua b/data/computercraft/lua/rom/programs/applist.lua
new file mode 100644
index 0000000..3f0afa7
--- /dev/null
+++ b/data/computercraft/lua/rom/programs/applist.lua
@@ -0,0 +1,76 @@
+-- applist.lua - List applications in /app directory
+
+local fs = require("fs")
+local tu = require("textutils")
+
+local function show_help()
+  print("Usage: applist [options]")
+  print("Lists all applications in the /app directory")
+  print("")
+  print("Options:")
+  print("  --help, -h    Show this help message")
+  print("  --verbose, -v Show more details about each application")
+end
+
+local function list_apps(verbose)
+  local app_dir = "/app"
+  
+  -- 检查app目录是否存在
+  if not fs.exists(app_dir) then
+    print("No applications directory found at /app")
+    return
+  end
+  
+  -- 获取app目录中的文件列表
+  local files = fs.list(app_dir)
+  
+  if #files == 0 then
+    print("No applications installed in /app directory")
+    return
+  end
+  
+  print("Installed applications:")
+  print("======================")
+  
+  for _, file in ipairs(files) do
+    local file_path = fs.combine(app_dir, file)
+    local is_dir = fs.isDir(file_path)
+    
+    if is_dir then
+      -- 如果是目录，可能是一个应用程序文件夹
+      print("[" .. file .. "]")
+      if verbose then
+        -- 在详细模式下，显示目录中的.lua文件
+        local sub_files = fs.list(file_path)
+        for _, sub_file in ipairs(sub_files) do
+          if sub_file:sub(-4) == ".lua" then
+            print("  - " .. sub_file)
+          end
+        end
+      end
+    elseif file:sub(-4) == ".lua" then
+      -- 如果是.lua文件，直接显示
+      print(file:sub(1, -5))  -- 移除.lua扩展名
+    end
+  end
+end
+
+local function main(args)
+  local verbose = false
+  
+  -- 解析命令行参数
+  for _, arg in ipairs(args) do
+    if arg == "--help" or arg == "-h" then
+      show_help()
+      return
+    elseif arg == "--verbose" or arg == "-v" then
+      verbose = true
+    end
+  end
+  
+  list_apps(verbose)
+end
+
+-- 运行主函数
+local args = {...}
+main(args)
\ No newline at end of file
diff --git a/data/computercraft/lua/rom/programs/shell.lua b/data/computercraft/lua/rom/programs/shell.lua
index 9f2cfd6..91fc58b 100644
--- a/data/computercraft/lua/rom/programs/shell.lua
+++ b/data/computercraft/lua/rom/programs/shell.lua
@@ -69,7 +69,8 @@ local aliases = {
   sh = "shell",
   ps = "threads",
   restart = "reboot",
-  version = "ver"
+  version = "ver",
+  package = "pkg"
 }
 
 for k, v in pairs(aliases) do
diff --git a/installer.lua b/installer.lua
index 59cc332..6d651d8 100644
--- a/installer.lua
+++ b/installer.lua
@@ -1,5 +1,5 @@
 -- LeonOS installer
-local INSTALLER_VERSION = "0.3.6 Beta 3"
+local INSTALLER_VERSION = "0.3.6 Beta 4"
 local DEFAULT_ROM_DIR = "/leonos"
 
 print("Start loading LeonOS installer ("..INSTALLER_VERSION..")...")