1#define _GNU_SOURCE 2#include <pwd.h> 3#include <stdio.h> 4 5int putpwent(const struct passwd *pw, FILE *f) 6{ 7 return fprintf(f, "%s:%s:%d:%d:%s:%s:%s\n", 8 pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid, 9 pw->pw_gecos, pw->pw_dir, pw->pw_shell)<0 ? -1 : 0; 10} 11