[Ubuntu] Samba (網路芳鄰) 服務效能的設定值

Samba 官方文件說明：
http://www.samba.org/samba/docs/man/manpages-3/smb.conf.5.html

網路上討論 Samba 效能的設定值：Faster Samba (SMB / CIFS) Share Performance

strict allocate = Yes
read raw = Yes
write raw = Yes
strict locking = No
socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=131072 SO_SNDBUF=131072
min receivefile size = 16384
use sendfile = true
aio read size = 16384
aio write size = 16384

[mysql] 修改mysql 的預設編碼

ubuntu linux:
/etc/mysql/my.cnf
win:
(installed path)/mysql/my.ini

[mysqld]
collation-server = utf8_unicode_ci
init-connect='SET NAMES utf8'
character-set-server = utf8

修改前

修改後

Java 存取本地電腦檔案 資料

http://jeffreyjc.pixnet.net/blog/post/13970514-java-applet%E5%AD%98%E5%8F%96%E6%9C%AC%E5%9C%B0%E9%9B%BB%E8%85%A6%E6%AA%94%E6%A1%88

http://tkcnandy.blogspot.tw/2009/12/sign-applet.html

[Ubuntu] 把 shutter 設為截圖預設程式

文章出處：http://shutter-project.org/faq-help/set-shutter-as-the-default-screenshot-tool/

寫得蠻清楚的！

Shutter as default
To configure Shutter as the default tool to take screenshots with when you press PrtSc or Alt+PrtSc, here's what you need to do:

• Gnome3/Unity

• KDE

• Xfce

• LXDE

1. Go to System Settings ▸ Keyboard

Gnome/Unity – System Settings

1. Switch to the Shortcut tab and add a new custom shortcut

Gnome/Unity – Add new custom shortcut

1. Enter a Name (e.g. Shutter) and a Command (e.g. shutter -f)

Gnome/Unity – Enter command

1. Click the new row and hold down the new keys in order to add/edit the accelerator

Gnome/Unity – Edit accelerator

1. That's it! Now the usual PrtSc keybinding will use Shutter to take the screenshots.

[ESXi] 更新至 ESXi 5.5

手邊有三台機器，4.1, 5.0, 5.1 都有，剛好這一次是 ESXi 4.1 這台出問題，就順便把它們維護一下。

5.1 可以直接下載更新套件直接下指令更新
5.0 就只能利用光碟開機後來更新了，試過用指令更新，它會重新後回復成5.0
4.1 就沒辦法，只能重新安裝了！

[esxi] Ubuntu Server 14.04 安裝 vmware-tool

1. 掛載 vmware-tools  光碟

$ sudo mount /dev/cdrom  /mnt


2.解壓縮
$ cd 
$ tar zxvf /mnt/VMwareTools-x.x.x-xxxxx.tar.gz

3. 安裝必要套件
$ sudo apt-get  linux-header-$(uname -r)  gcc

4.製作需要的連結
$ cd /lib/modules/$(uname -r)/build/include/linux
$ sudo ln -s ../generated/utsrelease.h
$ sudo ln -s ../generated/autoconf.h
$ sudo ln -s ../generated/uapi/linux/version.h 

5. 執行安裝
$ cd  ~/vmware-tools-distrib
$ sudo  ./vmware-install.pl


(幾乎都是用預設值就可以裝起來了，如果問 the path to the kernel headers 的話，就輸入「/usr/src/linux-headers-$(uname -r)/include」)

[Ubuntu] 設定多個 route

Ubuntu 中，多個 route 的網路設定：

auto eth0
iface eth0 inet static
      address 192.168.1.2
      netmask 255.255.255.0
      up route add -net 192.168.0.0 netmask 255.255.0.0 gw 192.168.1.1
      up route add -net 172.16.0.0 netmask 255.255.0.0 gw 192.168.1.1