PPTP一键安装脚本 for Ubuntu Xen VPS

最近avantehosting促销，推出了半年付6刀的Xen 128 VPS。
正好手头缺个VPS折腾点小东西，就入手了。

首先的需求是弄个VPN，于是根据别人的脚本改了个适合Xen VPS的一键安装脚本。
使用方法：

wget https://gist.github.com/raw/3110375/70544548700d82e527fa716f28319940964c8a30/pptpinstall.sh -O pptpinstall.sh
chmod +x pptpinstall.sh
./pptpinstall.sh

多谈一下avantehosting的vps，如果图便宜，可以考虑买一个。
机房在佛罗里达，ping值在300左右。62G的月流量不算大，但也够用。
开通的时候，遇到些小问题。发ticket后大概12小时解决了。

附UnixBench跑分结果：

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========================================================================
   BYTE UNIX Benchmarks (Version 5.1.3)
   System: GNU/Linux
   OS: GNU/Linux -- 3.0.0-12-server -- #20-Ubuntu SMP Fri Oct 7 16:36:30 UTC 2011
   Machine: x86_64 (x86_64)
   Language: en_US.utf8 (charmap="UTF-8", collate="UTF-8")
   CPU 0: Intel(R) Xeon(R) CPU E31230 @ 3.20GHz (6385.5 bogomips)
          Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET
   05:02:08 up  1:13,  1 user,  load average: 0.74, 0.39, 0.47; runlevel 2
------------------------------------------------------------------------
Benchmark Run: Sat Jul 14 2012 05:02:08 - 05:30:20
1 CPU in system; running 1 parallel copy of tests
Dhrystone 2 using register variables       23631847.0 lps   (10.0 s, 7 samples)
Double-Precision Whetstone                     2683.8 MWIPS (9.9 s, 7 samples)
Execl Throughput                               1202.5 lps   (29.8 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks        264524.8 KBps  (30.1 s, 2 samples)
File Copy 256 bufsize 500 maxblocks           53671.6 KBps  (30.1 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks        908392.9 KBps  (30.1 s, 2 samples)
Pipe Throughput                              455343.1 lps   (10.0 s, 7 samples)
Pipe-based Context Switching                  59319.0 lps   (10.0 s, 7 samples)
Process Creation                               2945.3 lps   (30.0 s, 2 samples)
Shell Scripts (1 concurrent)                   2367.5 lpm   (60.0 s, 2 samples)
Shell Scripts (8 concurrent)                    333.9 lpm   (60.1 s, 2 samples)
System Call Overhead                         429520.5 lps   (10.0 s, 7 samples)
System Benchmarks Index Values               BASELINE       RESULT    INDEX
Dhrystone 2 using register variables         116700.0   23631847.0   2025.0
Double-Precision Whetstone                       55.0       2683.8    488.0
Execl Throughput                                 43.0       1202.5    279.6
File Copy 1024 bufsize 2000 maxblocks          3960.0     264524.8    668.0
File Copy 256 bufsize 500 maxblocks            1655.0      53671.6    324.3
File Copy 4096 bufsize 8000 maxblocks          5800.0     908392.9   1566.2
Pipe Throughput                               12440.0     455343.1    366.0
Pipe-based Context Switching                   4000.0      59319.0    148.3
Process Creation                                126.0       2945.3    233.8
Shell Scripts (1 concurrent)                     42.4       2367.5    558.4
Shell Scripts (8 concurrent)                      6.0        333.9    556.5
System Call Overhead                          15000.0     429520.5    286.3
                                                                   ========
System Benchmarks Index Score                                         466.4

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