描述

此功能將枚舉設置(或重置)到組條目集的開頭。該函數應在第一次調用getgrent之前調用。

語法

以下是此函數的簡單語法-

setgrent

返回值

此函數不返回任何值。

例

以下是顯示其基本用法的示例代碼-

#!/usr/bin/perl -wwhile( ($name,$passwd,$gid,$members)=getgrent() ) {print "Name =$name\n";print "Password =$passwd\n";print "GID =$gid\n";print "Members =$members\n";
}setgrent();    # Set the beginnging of the group database;print "Again reading /etc/passwd file\n";
while( ($name,$passwd,$gid,$members)=getgrent() ) {print "Name =$name\n";print "Password =$passwd\n";print "GID =$gid\n";print "Members =$members\n";
}endpwent;  #claose the database;

執行上述代碼后,將產生以下輸出-

Name =root
Password =x
GID =0
Members =root
Name =bin
Password =x
GID =1
Members =root bin daemon
Name =daemon
Password =x
GID =2
Members =root bin daemon
Name =sys
Password =x
GID =3
Members =root bin adm
Name =adm
Password =x
GID =4
Members =root adm daemon
.
.
.
Name =kvm
Password =x
GID =36
Members =qemu
Name =qemu
Password =x
GID =107
Members =
Name =com
Password =x
GID =501
Members =
Name =webgrp
Password =x
GID =502
Members =com
Name =railo
Password =x
GID =495
Members =

Perl 中的 setgrent函數 - 無涯教程網無涯教程網提供描述此功能將枚舉設置(或重置)到組條目集的開頭。該函數應在第一次調用getgrent之前調...https://www.learnfk.com/perl/perl-setgrent.html