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不错，按上面的方法，已修复！！！

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# yum update bash-4.1.2-15.el6_5.1
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
* rpmforge: ftp.riken.jp
Setting up Update Process
Resolving Dependencies
--> Running transaction check
---> Package bash.x86_64 0:4.1.2-15.el6_4 will be updated
---> Package bash.x86_64 0:4.1.2-15.el6_5.1 will be an update
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================
Package      Arch           Version                    Repository       Size
==============================================================================
Updating:
bash         x86_64         4.1.2-15.el6_5.1           updates         905 k

Transaction Summary
==============================================================================
Upgrade       1 Package(s)

Total download size: 905 k
Is this ok [y/N]: y
Downloading Packages:
bash-4.1.2-15.el6_5.1.x86_64.rpm                       | 905 kB     00:00    
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
** Found 8 pre-existing rpmdb problem(s), 'yum check' output follows:
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(DBI)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(Time::HiRes)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(lib::mtr_gcov.pl)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(lib::mtr_gprof.pl)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(lib::mtr_io.pl)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(lib::mtr_misc.pl)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(lib::mtr_process.pl)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(mtr_misc.pl)
  Updating   : bash-4.1.2-15.el6_5.1.x86_64                               1/2
  Cleanup    : bash-4.1.2-15.el6_4.x86_64                                 2/2
  Verifying  : bash-4.1.2-15.el6_5.1.x86_64                               1/2
  Verifying  : bash-4.1.2-15.el6_4.x86_64                                 2/2

Updated:
  bash.x86_64 0:4.1.2-15.el6_5.1                                              

Complete!
[root@ ~]# shutdown -r now

Broadcast message from root@~
    (/dev/pts/0) at 21:27 ...

The system is going down for reboot NOW!
[root@~]#
Connection closed by foreign host.

Type `help' to learn how to use Xshell prompt.
Xshell:\>



Welcome to aliyun Elastic Compute Service!

[root@A]# env x='() { :;}; echo vulnerable' bash -c "echo this is a test"
bash: warning: x: ignoring function definition attempt
bash: error importing function definition for `x'
this is a test
红色部分为输入代码，其它为系统执行部分

新东西，有代观察。哈哈

神勇，无敌！