#include<pwd.h>

#include<sys/types.h>

void setpwent(void);

#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();

}

执行 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