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                ## getgrnam ### 從組文件中取得指定組的數據 ### 相關函數 ### fgetgrent,getrent,getgruid ### 表頭文件 ### ``` #include<grp.h> #include<sys/types.h> ``` ### 定義函數 ### ``` strcut group *getgrnam(const char *name); ``` ### 函數說明 ### getgrnam()用來逐一搜索參數那么指定的組名稱,找到時便將該組的數據以group結構返回。group 結構請參考getgrent()。 ### 返回值 ### 返回group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adm的組數據*/ #include<grp.h> #include<sys/types.h> main() { strcut group * data; int i=0; data = getgrnam(“adm”); printf(“%s:%s:%d:”,data->gr_name,data->gr_passwd,data->gr_gid); while(data->gr_mem[i])printf(“%s,”,data->gr_mem[i++]); printf(“\n”); } ``` ### 執行 ### ``` adm:x:4:root,adm,daemon ```
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