Perl getgrgid 函数
描述
该函数按组 ID 查找组文件条目。 在列表上下文中返回以下内容 −
($name, $passwd, $gid, $members)
$members 标量包含作为组成员的登录名的空格分隔列表。 返回标量上下文中的组名。 有关检索整个组文件的更有效方法，请参阅 getgrent。 在 Windows 下，考虑使用 Win32API::Net 模块。
语法
以下是此函数的简单语法 −
getgrgid GID
返回值
此函数返回 在 scalr 上下文中它返回组名称和在列表上下文中（名称、密码、组 ID 和成员列表。
示例
以下是显示其基本用法的示例代码 −
#!/usr/bin/perl
while( ($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";
}
执行上述代码时，会产生以下结果 −
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 =
