diff --git a/shellZilla.c b/shellZilla.c
index 554535a..81335a8 100644
--- a/shellZilla.c
+++ b/shellZilla.c
@@ -13,3 +13,137 @@
 #define SHELL_HIS_CMD_CNT_MAX 10
 #define PATH_LEN_MAX 1024
 #define PROMPT_LEN_MAX 1024
+
+/*command we now support*/
+char *supCmd[] = 
+{
+    "currentdir",
+    "ver",
+    NULL
+};
+
+/*get current folder name*/
+void funShellZillaGetCurFolder(char *pCwd, char *curFolder)
+{
+    char *p = NULL;
+    int len = 0;
+    
+    p = pCwd + strlen(pCwd);
+    /*find the last / from the directory*/
+    while(*p != '/')
+    {
+        len++;
+        p--;
+    }
+    memcpy(curFolder, p+1, len);
+    return;
+}
+
+char *funShellZillaGetRidOfSpace(char *input)
+{
+    char *p = NULL;
+    char *q = NULL;
+
+    p = input;
+    /*find the first char that is not whitespace*/
+    while(*p == ' ')
+    {
+        p++;
+    }
+
+    /*get rid of the white space at the end*/
+    q = input+strlen(input)-1;
+    while(*q == ' ')
+    {
+        q--;
+    }
+    q++;
+    *q = '\0';
+    return p;
+}
+
+/*function for command ver*/
+void funShellZillaExcVer(char *pCmd, char *pParam)
+{
+    printf("\r\n**********************************************************************\n");
+    printf("**************************SHELL ZILLA*********************************\n");
+    printf("**********************************************************************\n");
+    printf("*current version    : 1.1                                            *\n");
+    printf("*feature description: 1.get current folder name                *\n");
+    printf("*                     2.shell version                  *\n");
+    printf("*                     3.                     *\n");
+    printf("*author             : Tianqi Zhou, Wentao Xu, Yuming Zhang, Zhenqing Luo *\n");
+    printf("**********************************************************************\r\n");
+    return;
+}
+
+
+
+int main()
+{
+    char shellPrompt[PROMPT_LEN_MAX];
+    char cwd[PATH_LEN_MAX];
+    char *userInput = NULL;
+    char curFolder[64];
+    char *inputWithNoSpace = NULL;
+    char cmd[PROMPT_LEN_MAX];
+    char param[PROMPT_LEN_MAX];
+
+    /*init the completion function*/
+    funShellZillaReadLineIni();
+
+    /*set the command history count to 10*/
+    stifle_history(SHELL_HIS_CMD_CNT_MAX);
+    while(1)
+    {
+        memset(cwd, 0, sizeof(cwd));
+        getcwd(cwd, sizeof(cwd));
+
+        memset(curFolder, 0, sizeof(curFolder));
+        /*just get the folder name in current directory*/
+        funShellZillaGetCurFolder(cwd, curFolder);
+        memset(shellPrompt, 0, sizeof(shellPrompt));
+        
+        sprintf(shellPrompt, "%s@%s:%s $", getenv("USER"), "ShellZilla", curFolder);
+
+        /*read from stdinput*/
+        userInput = readline(shellPrompt);
+        if(NULL == userInput)
+        {
+            break;
+        }
+
+        /*get rid of the white space at the beginning and the end*/
+        inputWithNoSpace = funShellZillaGetRidOfSpace(userInput);
+        /*printf("%s\n", inputWithNoSpace);*/
+
+        /*add the command to history*/
+        add_history(inputWithNoSpace);
+        if(!funShellZillaIsValidCmd(inputWithNoSpace))
+        {
+            /*if command not supported,print warning info*/
+            printf("%s :command not found!\n", inputWithNoSpace);
+            free(userInput);
+            userInput = NULL;
+            continue;
+        }
+
+        memset(cmd, 0, PROMPT_LEN_MAX);
+        memset(param, 0, PROMPT_LEN_MAX);
+        /*parse the input,get the command name and the parameter*/
+        funShellZillaParse(inputWithNoSpace, cmd, param);
+        if(!strcmp(cmd, "quit"))
+        {
+            free(userInput);
+            userInput = NULL;
+            break;
+        }
+        /*excute the command*/
+        funShellZillaExc(cmd, param);
+
+        free(userInput);
+        userInput = NULL;
+    }
+    return OK;
+}
+#endif