Linux練習（獲得使用者資料）

#include <sys/types.h>#include <stdio.h>#include <pwd.h>#include <unistd.h>int main(){        uid_t uid;        gid_t gid;        struct passwd *pw;        uid =getuid();        gid=getgid();        printf("User is %s\n",getlogin());        printf("User IDs:uid=%d,gid=%d\n",uid,gid);        pw=getpwuid(uid);        printf("UID passwd entry:\nname=%s,uid=%d,gid=%d,home=%s,shell=%s\n",pw->pw_name,pw->pw_uid,pw->pw_gid,pw->pw_dir,pw->pw_shell);        pw=getpwnam("root");        printf("root passwd entry:\n");        printf("name=%s,uid=%d,gid=%d,home=%s,shell=%s\n",                        pw->pw_name,pw->pw_uid,pw->pw_gid,pw->pw_dir,pw->pw_shell);        return 0;}