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                ## setpwent ## 從頭讀取密碼文件中的賬號數據 ### 相關函數 ### getpwent,endpwent ### 表頭文件 ### ``` #include<pwd.h> #include<sys/types.h> ``` ### 定義函數 ### ``` void setpwent(void); ``` ### 函數說明 ### setpwent()用來將getpwent()的讀寫地址指回密碼文件開頭。 ### 范例 ### ``` #include<pwd.h> #include<sys/types.h> main() { struct passwd *user; int i; for(i=0;i<4;i++){ user=getpwent(); printf(“%s :%d :%d :%s:%s:%s\n”,user->pw_name,user->pw_uid,user->pw_gid, user->pw_gecos,user->pw_dir,user->pw_shell); } setpwent(); user=getpwent(); printf(“%s :%d :%d :%s:%s:%s\n”,user->pw_name,user->pw_uid,user->pw_gid, user->pw_gecos,user->pw_dir,user->pw_shell); endpwent(); } ``` ### 執行 ### ``` root:0:0:root:/root:/bin/bash bin:1:1:bin:/bin daemon:2:2:daemon:/sbin adm:3:4:adm:/var/adm root:0:0:root:/root:/bin/bash ```
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