描述
此功能将枚举设置(或重置)到组条目集的开头。该函数应在第一次调用getgrent之前调用。
语法
以下是此函数的简单语法-
setgrent
返回值
此函数不返回任何值。
例
以下是显示其基本用法的示例代码-
#!/usr/bin/perl -w
while( ($name,$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;
执行上述代码后,将产生以下输出-
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 =
