### 昨天还说的传说要又一次出补丁，今天就都出来了。基本操作一致就是測试结果不一样。继续修复 Debian7 wheezy版本号的bash漏洞，例如以下操作：
1、測试是否须要升级
# env x='() { :;}; echo vulnerable' bash -c "echo this is a test" #显演示样例如以下，须要升级
vulnerable
this is a test
2、离线升级
### 好多server不能出外网，仅仅能下载了升级了
# wget http://security.debian.org/debian-security/pool/updates/main/b/bash/bash_4.2+dfsg-0.1+deb7u3_amd64.deb
# dpkg -i bash_4.2+dfsg-0.1+deb7u3_amd64.deb
(Reading database ... 38868 files and directories currently installed.)
Preparing to replace bash 4.2+dfsg-0.1+deb7u1 (using bash_4.2+dfsg-0.1+deb7u3_amd64.deb) ...
Unpacking replacement bash ...
Setting up bash (4.2+dfsg-0.1+deb7u3) ...
update-alternatives: using /usr/share/man/man7/bash-builtins.7.gz to provide /usr/share/man/man7/builtins.7.gz (builtins.7.gz) in auto mode
Processing triggers for man-db ...
# dpkg -l bash # 查看升级后的版本号
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-=====================-===============-===============-===============================================
ii bash 4.2+dfsg-0.1+de amd64 GNU Bourne Again SHell
ii bash 4.2+dfsg-0.1+de amd64 GNU Bourne Again SHell
# env x='() { :;}; echo vulnerable' bash -c "echo this is a test" # 示的例子中，下列的变化，升级完成
this is a test
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