Perl getgrent 函数

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  描述

  getgrent 此函数遍历/etc/group文件中的条目。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。仅在标量上下文中使用时才返回组名。在Windows下，请考虑使用Win32API::Net模块。
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  句法

  以下是此函数的简单语法-

  
  getgrent
  

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  返回值

  此函数在缩放器上下文和列表上下文（名称，密码，组ID和成员列表）中返回组名。
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  示例

  以下是显示其基本用法的示例代码-

   
  while( ($name,$passwd,$gid,$members) = getgrent() ) {
     print "Name  = $name\n";
     print "Password  = $passwd\n";
     print "GID  = $gid\n";
     print "Members  = $members\n";
  }
  

  尝试一下

  执行结果：

  
  Name = root
  Password = x
  GID = 0
  Members = 
  Name = daemon
  Password = x
  GID = 1
  Members = 
  Name = bin
  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 = mail
  Password = x
  GID = 8
  Members = 
  Name = news
  Password = x
  GID = 9
  Members = 
  Name = uucp
  Password = x
  GID = 10
  Members = 
  Name = man
  Password = x
  GID = 12
  Members = 
  Name = proxy
  Password = x
  GID = 13
  Members = 
  Name = kmem
  Password = x
  GID = 15
  Members = 
  Name = dialout
  Password = x
  GID = 20
  Members = 
  Name = fax
  Password = x
  GID = 21
  Members = 
  Name = voice
  Password = x
  GID = 22
  Members = 
  Name = cdrom
  Password = x
  GID = 24
  Members = 
  Name = floppy
  Password = x
  GID = 25
  Members = 
  Name = tape
  Password = x
  GID = 26
  Members = 
  Name = sudo
  Password = x
  GID = 27
  Members = 
  Name = audio
  Password = x
  GID = 29
  Members = 
  Name = dip
  Password = x
  GID = 30
  Members = 
  Name = www-data
  Password = x
  GID = 33
  Members = 
  Name = backup
  Password = x
  GID = 34
  Members = 
  Name = operator
  Password = x
  GID = 37
  Members = 
  Name = list
  Password = x
  GID = 38
  Members = 
  Name = irc
  Password = x
  GID = 39
  Members = 
  Name = src
  Password = x
  GID = 40
  Members = 
  Name = gnats
  Password = x
  GID = 41
  Members = 
  Name = shadow
  Password = x
  GID = 42
  Members = 
  Name = utmp
  Password = x
  GID = 43
  Members = 
  Name = video
  Password = x
  GID = 44
  Members = 
  Name = sasl
  Password = x
  GID = 45
  Members = 
  Name = plugdev
  Password = x
  GID = 46
  Members = 
  Name = staff
  Password = x
  GID = 50
  Members = 
  Name = games
  Password = x
  GID = 60
  Members = 
  Name = users
  Password = x
  GID = 100
  Members = 
  Name = nogroup
  Password = x
  GID = 65534
  Members = 
  Name = input
  Password = x
  GID = 101
  Members = 
  Name = systemd-journal
  Password = x
  GID = 102
  Members = 
  Name = systemd-timesync
  Password = x
  GID = 103
  Members = 
  Name = systemd-network
  Password = x
  GID = 104
  Members = 
  Name = systemd-resolve
  Password = x
  GID = 105
  Members = 
  Name = systemd-bus-proxy
  Password = x
  GID = 106
  Members = 
  Name = ssh
  Password = x
  GID = 107
  Members =