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                ## getpwuid ## 從密碼文件中取得指定uid 的數據 ### 相關函數 ### getpw,fgetpwent,getpwent,getpwnam ### 表頭文件 ### ``` #include<pwd.h> #include<sys/types.h> ``` ### 定義函數 ### ``` struct passwd *getpwuid(uid_t uid); ``` ### 函數說明 ### getpwuid()用來逐一搜索參數uid 指定的用戶識別碼,找到時便將該用戶的數據以結構返回結構請參考將該用戶的數據以passwd 結構返回。passwd 結構請參考getpwent()。 ### 返回值 ### 返回passwd 結構數據,如果返回NULL 則表示已無數據,或者有錯誤發生。 ### 范例 ### ``` #include<pwd.h> #include<sys/types.h> main() { struct passwd *user; user= getpwuid(6); printf(“name:%s\n”,user->pw_name); printf(“uid:%d\n”,user->pw_uid); printf(“home:%s\n”,user->pw_dir); } ``` ### 執行 ### ``` name:shutdown uid:6 home:/sbin ```
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