描述
此功能通过组ID查找组文件条目。在列表context中返回以下内容-
($name,$passwd,$gid,$members)
$members标量包含作为组成员的登录名的空格分隔列表。在标量context中返回组名。有关检索整个组文件的更有效方法,请参阅getgrent。在Windows下,请考虑使用Win32API::Net模块。
语法
以下是此函数的简单语法-
getgrgid GID
返回值
此函数返回在scalrcontext中,它返回组名,并在列表context中(名称,密码,组ID和成员列表)返回。
例
以下是显示其基本用法的示例代码-
#!/usr/bin/perl
while( ($name,$passwd,$gid,$members)=getgrent() ) {
($name,$passwd,$gid,$members)=getgrgid $gid;
print "Name =$name\n";
print "Password =$passwd\n";
print "GID =$gid\n";
print "Members =$members\n";
}
执行上述代码后,将产生以下输出-
Name =root Password =x GID =0 Members = Name =bin Password =x GID =1 Members = Name =daemon Password =x GID =2 Members = Name =sys Password =x GID =3 Members = Name =adm Password =x GID =4 Members = Name =tty Password =x GID =5 Members = Name =disk Password =x GID =6 Members = Name =lp Password =x GID =7 Members = . . . . Name =apache Password =x GID =48 Members = Name =rexx Password =x GID =1001 Members = Name =objc Password =x GID =1002 Members =
