想写一些简化管理操作的脚本，下面是基础脚本之一。

对于一个从来没使用过perl脚本的我来说还是有些难度的，直接上代码。

此脚本用于发送远程MySQL命令并且接收结果，功能比较简单，后面会渐渐完善。

#!/usr/bin/perl 

 use Getopt::Long;
use DBI;
  Getopt::Long::GetOptions(              
      ‘host|h=s‘    => \$host,            
      ‘user|u=s‘    => \$user,            
       ‘password|pw=s‘    => \$password,           
       ‘port|p=s‘    => \$port,           
       ‘command|c=s‘    => \$command,
       ‘groupfile|f=s‘  => \$groupfile,
       ‘help‘    => \$help
       ); 
#print help info 
my $printh=q{
usage : 
  mysqlcon -h 192.168.0.33 -u root -pw ‘xiaojun‘ -p 3306 -c ‘show global status‘
  or 
  mysqlcon -g 2.txt -c ‘select user();‘

cat 2.txt:
192.168.0.33    root    xiaojun 3306
192.168.0.34    root    xiaojun 3306


options:

-h     database server *
-u     account name *
-pw    password for account *
-p     port for mysqld *
-c     command to execute *
-help  print help

};

=pod
if(!defined($host)){   
  print "page flag set to $page "
}
if(defined($user)){
           print "user flag set to $user\n ";
}
if(defined($password)){
           print "onoff flag set to $password \n";
}
if(defined($command)){
           print "help flag set to $command \n";
}
if(defined($help)){
           print $printh
}
=cut
sub execute_sql{
my $dsn = "DBI:mysql:database=mysql;host=$_[0]:$_[1]";
my ($dbh,$sth,@ary);
$dbh = DBI->connect($dsn,$_[2],$_[3],{‘RaiseError‘ => 1});
$sth = $dbh->prepare("$_[4]");
$sth->execute();                            
while(@ary = $sth->fetchrow_array()){
print join("\t",@ary),"\n";
}                                          
$sth->finish;                             
$dbh->disconnect; 
}
#&execute_sql($host,$port,$user,$password,$command) ;

unless (!defined($help)) { die "$printh" };

if(defined($groupfile)){
  unless (defined($command)) { die "Wrong usage : No command input .\n $printh" };
  open(IN,$groupfile);
  while($line=<IN>){
    my @args=split /\s/,$line;
    print "host:@args[0]\ncommand:$command\n******BEGIN\n";
    &execute_sql(@args[0],@args[3],@args[1],@args[2],$command) ;
    print "******END \n\n\n*****************************************************\n\n\n";

  }
}else{
unless (defined($host)) { die "Wrong usage : No host input .\n $printh" };
unless (defined($user)) { die "Wrong usage : No account input .\n $printh" };
unless (defined($password)) { die "Wrong usage : No password input .\n $printh" };
unless (defined($port)) { die "Wrong usage : No port number input .\n $printh" };
unless (defined($command)) { die "Wrong usage : No command input .\n $printh" };
&execute_sql($host,$port,$user,$password,$command) ;
}

使用方法

[root@centos511 ~]# ./6.perl -h 192.168.0.33  -u root -pw ‘xiaojun‘ -p 3306 -c ‘select user()‘ ;
root@192.168.0.33
[root@centos511 ~]# ./6.perl -g 2.txt -c ‘select user()‘ 
host:192.168.0.33
command:select user()
******BEGIN
root@192.168.0.33
******END 


*****************************************************


host:192.168.0.33
command:select user()
******BEGIN
root@192.168.0.33
******END 


*****************************************************


[root@centos511 ~]# cat 2.txt 
192.168.0.33    root    xiaojun 3306
192.168.0.33    root    xiaojun 3306


[root@centos511 ~]# ./6.perl -help

usage : 
  mysqlcon -h 192.168.0.33 -u root -pw ‘xiaojun‘ -p 3306 -c ‘show global status‘
  or 
  mysqlcon -g 2.txt -c ‘select user();‘

cat 2.txt:
192.168.0.33    root    xiaojun 3306
192.168.0.34    root    xiaojun 3306


options:

-h     database server *
-u     account name *
-pw    password for account *
-p     port for mysqld *
-c     command to execute *
-help  print help

写的一个perl脚本，用于发送远程MySQL命令