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                ## getpwnam ## 從密碼文件中取得指定賬號的數據 ### 相關函數 ### getpw,fgetpwent,getpwent,getpwuid ### 表頭文件 ### ``` #include<pwd.h> #include<sys/types.h> ``` ### 定義函數 ### ``` struct passwd *getpwnam(const char *name); ``` ### 函數說明 ### getpwnam()用來逐一搜索參數name 指定的賬號名稱,找到時便將該用戶的數據以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,或有錯誤發生。 ### 范例 ### ``` /*取得root賬號的識別碼和根目錄*/ #include<pwd.h> #include<sys/types.h> main() { struct passwd *user; user = getpwnam(“root”); printf(“name:%s\n”,user->pw_name); printf(“uid:%d\n”,user->pw_uid); printf(“home:%s\n”,user->pw_dir); } ``` ### 執行 ### ``` name:root uid:0 home:/root ```
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