Ubuntu Trusty 14.04 (Linux Kernel 3.19.0-65) install NVIDIA GeForce 780M driver

Recently, after an kernel upgrade, my laptop cannot detect external monitors anymore. Finding a solution takes me two days – here’s a note in case I need to do it again in the future.

• google keyword: ubuntu+nvidia+driver; ubuntu+nvidia+dual/multi monitor 
• re-install ubuntu, get a clean environment 
• disable UEFI secure boot is required 
• still need to download and run official nvidia driver install script - NVIDIA-Linux-x86_64->.

run

  $ add-apt-repository ppa:graphics-drivers/ppa
  $ sudo add the graphics-drivers ppa
  $ sudo apt-get update
  $ sudo ubuntu-drivers autoinstall // in order to disable UEFI secure boot

Since I tried lots of steps and finally worked, which steps are nessesary or not is never known. Here’s the packages related to nvidia I currently installed:

[NOTE]
During installation with NVIDIA-Linux-x86_64->.

run , remember0. follow the steps recommended on Ask-Ubuntu forum to disable x-server
1. don't install source for next kernel upgrage
2. generate new key-pair
3. remove old key
4. re-start x-server ($ sudo service lightdm start)

Hope this pose help someone also.

[分享] 不需要安裝 iTunes 也可以使用 iTools 的方法

最近重灌了電腦，適逢身邊有許多人一直在詢問重複的問題，乾脆趁安裝軟體的同時來紀錄一下，順便當成教學文件。

這篇是針對「想要使用 iTools，卻不想安裝 iTunes 巨獸」的 iPhone/iPod/iPad 使用者。

需要預先安裝的軟體：
1. 7-zip

需要預先下載好的程式：
1. iTunes（不需要安裝，下載即可）

假設在一台沒裝 iTunes 的電腦裡面直接執行 iTools，會出現錯誤訊息「iTunes 載入失敗，請確認您是否已經安裝完成 iTunes」

因為 iTools 在執行的時候會先去檢查有沒有 Apple 驅動，而蘋果官方提供 iPhone/iPod/iPad 安裝驅動程式的唯一方法就是直接安裝 iTunes（這也是當初我遲遲不想入手 iPhone 的原因，因為怕被 iTunes 綁死）

其實官方下載的 iTunes 安裝檔，可以用解壓軟體 7-zip 打開，然後只安裝 iTools 需要的部分即可。

右鍵點選 iTunes 安裝檔，選「7-zip」->「開啟」，可以看到以下的檔案清單：

其中 iTools 需要的只有兩個：
1. AppleApplicationSupport.msi
2. AppleMobileDeviceSupport64.msi
（請注意 Windows 的版本，如果不是 x64 的話就不能用 AppleMobileDeviceSupport64.msi，要另外去下載 32-bit 的 iTunes 安裝檔來解壓縮）

安裝過程就一直點 next 直到最後就好，但是要注意順序，先安裝 AppleApplicationSupport.msi，再安裝 AppleMovileDeviceSupport64.msi。

安裝完之後，理論上 iTools 就可以正常執行了。（還是不行的話…請在 google 上另請高明～）

在 Android ICS 下新增 userspace cosole application 的方法

1. 比照 external 內的資料夾，新增一個 project folder ，內容比照辦理。

2. 進入 device 資料夾，加入新的 application 定義

3. 可參考內建程式：tinymix, tinycap, tinyplay…

[工具] 相見恨晚的強大 SSH 工具 ─ MobaXterm

話說我的工作內容需要大量使用 SSH 來存取 virtual machine，但是 putty 一次一個視窗、要加 X11 forward 還要外掛，很是不便。

幸好給我找到這個軟體：MobaXterm

裡面幾乎整額所有我需要的功能：SSH、SFTP、RDP、X11 forwarding、多頁面視窗、還有很多像是 gvim 的外掛可以加。

難得讓我一看就覺得不可思議的好作品！

網址：http://mobaxterm.mobatek.net/

20120516 工作筆記

1. 在 linux console 下設定 proxy：
export http_proxy=”http://hostname:portnumber”

2. SD card (sdb1、sdb2) mount 完成後（假設 mount 在 /media/boot/ 和 /media/rootfs/ 下），將 foo.tar.bz2 解壓到 /media/rootfs/：
tar jxfv foo.tar.bz2 –C /media/rootfs

3. 將 foo.tar.gz 解壓到 /myfolderpath/
tar zxfv foo.tar.gz –C /myfolderpath/

4. check out SVN server 中第 38 個版本：
svn co –r 38 –username MYNAME –password PASSWORD svn://hostip/folder/subfolder

5. 搜尋 FOLDER 資料夾中含有關鍵字 KEYWORD 的檔案並標示行數：
grep –r –n “KEYWORD” FOLDER

6. 讓自己寫的 script 開機後自動執行：
/etc/profile.d/my_script.sh

7. universalIndentGUI => save config file => create batch file (config and batch files shoud be at the same directory)

8. Vim 中的長字串自動完成：ctrl-p 或 ctrl-n

9. Good to use 共用資料夾 in VirtualBox guest OS, it's easy and powerful.

10. shift + right click folder => open command here

11. in 64bit Win7, 32bit-chrome will download 32bit Java by default

12. MSN minimize to system tray => Vista Mode

13. gtags 好像只能在 WinXP 32bit 下面才能正常運作，Win7 x64 無法, 但是在Ubuntu下可以正常運作

14. Good to use easygui in Python

15. win7 刪除服務 sc delete servicename

16. virtualbox network bridge 不能用混合模式

17. mount box.net: https://www.box.net/dav

18. mkmmc-android.sh

   1: #!/bin/bash

   2:  

   3: # Copyright (C) 2009 Andrei Dolnikov <dolnikov.andrei@gmail.com>

   4: #

   5: # Licensed under the Apache License, Version 2.0 (the "License");

   6: # you may not use this file except in compliance with the License.

   7: # You may obtain a copy of the License at

   8: #

   9: #      http://www.apache.org/licenses/LICENSE-2.0

  10: #

  11: # Unless required by applicable law or agreed to in writing, software

  12: # distributed under the License is distributed on an "AS IS" BASIS,

  13: # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  14: # See the License for the specific language governing permissions and

  15: # limitations under the License.

  16:  

  17: if [[ -z $1 || -z $2 || -z $3 || -z $4 ]]

  18: then

  19:     echo "mkmmc-android Usage:"

  20:     echo "    mkmmc-android <device> <board name> <uImage> <rootfs tar.bz2 archive>"

  21:     echo "    Example: mkmmc-android /dev/sdc beagleboard uImage rootfs.tar.bz2"

  22:     exit

  23: fi

  24:  

  25: if [[ -z `which mkimage` ]]

  26: then

  27:     echo "Please, install mkimage on your host"

  28:     echo "    On Ubuntu systems: sudo apt-get install uboot-mkimage"

  29:     exit

  30: fi

  31:  

  32: if ! [[ -e $2 ]]

  33: then

  34:     echo "Incorrect board name!"

  35:     exit

  36: fi

  37:  

  38: if ! [[ -e $3 ]]

  39: then

  40:     echo "Incorrect uImage location!"

  41:     exit

  42: fi

  43:  

  44: if ! [[ -e $4 ]]

  45: then

  46:     echo "Incorrect rootfs tarball location!"

  47:     exit

  48: fi

  49:  

  50: echo "All data on "$1" now will be destroyed! Continue? [y/n]"

  51: read ans

  52: if ! [ $ans == 'y' ]

  53: then

  54:     exit

  55: fi

  56:  

  57: echo "[Partitioning $1...]"

  58:  

  59: dev_sz=`fdisk -l $1 | grep $1: | awk '{print$(NF-1)}'`

  60: cyl=$(expr $dev_sz / 512 / 63 / 255)

  61: fat_end=$(expr $cyl / 2)

  62:  

  63: fdisk "$1" &> /dev/null << EOF

  64: o

  65: x

  66: h

  67: 255

  68: s

  69: 63

  70: c

  71: $cyl

  72: r

  73: n

  74: p

  75: 1

  76:  

  77: $fat_end

  78: t

  79: c

  80: a

  81: 1

  82: n

  83: p

  84: 2

  85:  

  86:  

  87: w

  88: EOF

  89:  

  90: echo "[Making filesystems...]"

  91:  

  92: mkfs.vfat -F 32 -n boot "$1"1 &> /dev/null

  93: mkfs.ext3 -L rootfs "$1"2 &> /dev/null

  94:  

  95: echo "[Copying files...]"

  96:  

  97: mount "$1"1 /mnt

  98: cp $3 /mnt/uImage

  99: mkimage -A arm -O linux -T script -C none -a 0 -e 0 -n $2/normal/boot.script -d $2/normal/boot.script $2/normal/boot.scr &> /dev/null

 100: cp $2/normal/boot.scr /mnt

 101: umount "$1"1

 102:  

 103: mount "$1"2 /mnt

 104: tar jxvf $4 -C /mnt &> /dev/null

 105: chmod 755 /mnt

 106: umount "$1"2

 107:  

 108: echo "[Done]"

讓 Eclipse 可以呼叫外部編輯器開啟檔案

雖然 Eclipse 這個 IDE 相當強悍，功能多、自定性高，但看來看去總覺得 editor 的視窗太小了，遇到長一點的 code 就會覺得要一直滑滾輪很煩，然後就會很想用 vim 來開同一個檔案來看。

「Windows」=>「Preference」=>「General」=>「Editors」=>「File Associations」

在這裡更改即可。

VitualBox + Ubuntu + SSH Server 設定方式

萬萬沒想到，念了研究所拋棄擁抱多年的 Linux ，如今公司居然要我重操就業…
而且還是我一直沒打算碰的 Android XD

之前在學校都是直接灌 PC 或是用 VMware，但公司要求不能使用非法版權軟體，只好改用 VirtualBox
無奈第一步想要架起 SSH Server 從 Host 連進去就不斷失敗 orz

幸好最後還是有辦到，不然今晚就別想睡著了

首先，在 VirtualBox 裡面灌好 Ubuntu ，然後用 Synapic 安裝 OpenSSH Server 都不太可能出現問題。
接下來就是問題所在了，如果直接用 putty/pietty 連 192.168.56.1 （VirtualBox Host-Only Network）會顯示「Connection Refused」
在 Ubuntu 裡面怎麼試都沒用，因為不是 Guest 那邊的問題。

解決之道如下

方法一：用「命令提示字元」進入 VirtualBox 的安裝目錄，輸入「VBoxManage modifyvm UbuntuVM –natpf1 “guestsshh,tcp,,2222,,22”」
這樣可以在 Host 端連 localhost:2222 或 192.168.56.1:2222 ，VirtualBox 會把這個連線導入 Guest 的 port 22

方法二：直接修改「設定值」-「網路」-「連接埠轉送規則」

其實就是跟方法一得到一樣的效果，我另外嘗試 22 轉 22 ，也可以 work 。

如果出現了防火牆的訊息，記得點「允許」。

Excel VBA 抓 ebay 和 dealoz 書目資料

   1: Option Explicit

   2: Function ExistSheet(shtName As String)

   3:     Dim Sht As Object

   4:     On Error Resume Next

   5:     Set Sht = Sheets(shtName)

   6:     If Err.Number = 0 Then

   7:         ExistSheet = True

   8:     Else

   9:         ExistSheet = False

  10:     End If

  11:     Set Sht = Nothing

  12: End Function

  13: Public Sub getURLs()

  14:     ' find last row

  15:     Dim lastCell As Range

  16:     Set lastCell = Sheets("Control Panel").Range("A65536").End(xlUp)

  17:     Dim lastRow As Integer

  18:     lastRow = lastCell.Row

  19:     

  20:     Dim hlink As Hyperlink

  21:     Dim firstRow As Integer

  22:     firstRow = 3

  23:     

  24:     For Each hlink In Sheets("Control Panel").Range(Cells(firstRow, 1), Cells(lastRow, 1)).Hyperlinks

  25:         Cells(hlink.Range.Row, 2) = hlink.Address

  26:     Next

  27: End Sub

  28: Sub getISBN()

  29:     ' in Excel,  long numeric strings will be displayed in scientific notation

  30:     ' in order to avoid scientific notation

  31:     Cells.Select

  32:     Selection.NumberFormatLocal = "0"

  33:  

  34:     ' for each row:

  35:     ' 1. get DOM objects from URL

  36:     ' 2. find ISBN-10 and ISBN-13

  37:     

  38:     ' find last row

  39:     Dim lastCell As Range

  40:     Dim lastRow As Integer

  41:     Set lastCell = Sheets("Control Panel").Range("B65536").End(xlUp)

  42:     lastRow = lastCell.Row

  43:     Dim firstRow As Integer

  44:     firstRow = 3

  45:     

  46:     ' get DOM objs

  47:     Dim ie As WebBrowser

  48:     Set ie = CreateObject("InternetExplorer.Application")

  49:     Dim doc As HTMLDocument

  50:     Dim elements As IHTMLElementCollection

  51:     Dim elem1, elem2 As IHTMLElement    ' find 2 layers of document objs

  52:     Dim strURL As String

  53:     Dim bISBN_10, bISBN_13 As Boolean

  54:     Dim i As Integer

  55:     For i = firstRow To lastRow

  56:         strURL = Cells(i, 2).Value

  57:         ie.navigate (strURL)

  58:         ie.Visible = True

  59:         Do Until ie.readyState = READYSTATE_COMPLETE

  60:             DoEvents

  61:         Loop

  62:         

  63:         Set doc = ie.document

  64:         ' only search text inside table

  65:         Set elements = doc.getElementsByTagName("TD")

  66:         

  67:         bISBN_10 = False

  68:         bISBN_13 = False

  69:         ' check first layer

  70:         For Each elem1 In elements

  71:             If bISBN_10 = False And IsNumeric(elem1.innerText) And Len(Trim(elem1.innerText)) = 10 Then

  72:                 Cells(i, 3) = elem1.innerText

  73:                 bISBN_10 = True

  74:             End If

  75:             If bISBN_13 = False And IsNumeric(elem1.innerText) And Len(Trim(elem1.innerText)) = 13 Then

  76:                 Cells(i, 4) = elem1.innerText

  77:                 bISBN_13 = True

  78:             End If

  79:             If bISBN_10 = True And bISBN_13 = True Then

  80:                 Exit For

  81:             End If

  82:         Next elem1

  83:         ' check second layer

  84:         For Each elem1 In elements

  85:             For Each elem2 In elem1.all

  86:                 If bISBN_10 = False And IsNumeric(elem2.innerText) And Len(Trim(elem2.innerText)) = 10 Then

  87:                     Cells(i, 3) = elem2.innerText

  88:                     bISBN_10 = True

  89:                 End If

  90:                 If bISBN_13 = False And IsNumeric(elem2.innerText) And Len(Trim(elem2.innerText)) = 13 Then

  91:                     Cells(i, 4) = elem2.innerText

  92:                     bISBN_13 = True

  93:                 End If

  94:                 If bISBN_10 = True And bISBN_13 = True Then

  95:                     Exit For

  96:                 End If

  97:             Next elem2

  98:             If bISBN_10 = True And bISBN_13 = True Then

  99:                     Exit For

 100:             End If

 101:         Next elem1

 102:         ' if both ISBN-10 and ISBN-13 are not found, ignore the rest steps

 103:         If bISBN_10 = False And bISBN_13 = False Then

 104:             Cells(i, 3) = "Not Found"

 105:             Cells(i, 4) = "Not Found"

 106:         Else

 107:         End If

 108:     Next i

 109:     Columns(3).AutoFit

 110:     Columns(4).AutoFit

 111: End Sub

 112: Sub getBooksInfo()

 113:     ' for each row:

 114:     ' 1. get DOM objects from URL

 115:     ' 2. find title,

 116:     

 117:     ' find last row

 118:     Dim lastCell As Range

 119:     Dim lastRow As Integer

 120:     Set lastCell = Sheets("Control Panel").Range("B65536").End(xlUp)

 121:     lastRow = lastCell.Row

 122:     Dim firstRow As Integer

 123:     firstRow = 3

 124:     

 125:     Dim i As Integer

 126:     For i = firstRow To lastRow

 127:         If IsNumeric(Cells(i, 4)) Then

 128:             ' create a new "Temp" worksheet

 129:             If ExistSheet("Temp") Then

 130:                 Application.DisplayAlerts = False

 131:                 Sheets("Temp").Delete

 132:                 Application.DisplayAlerts = True

 133:             End If

 134:             Sheets.Add After:=Sheets(Sheets.Count)

 135:             ActiveSheet.Name = "Temp"

 136:             

 137:             Dim strISBN, strURL1, strURL2, strURL3, strURL4, strURL5, strURL6 As String

 138:             strISBN = Sheets("Control Panel").Cells(i, 4)

 139:             strURL1 = "URL;http://www.dealoz.com/prod2.pl?cat=book&op=buy&op2=buy&lang=en-us&search_country=us&shipto=us&cur=usd&zip=&nw=y&class=&pqcs=&quantity=&shipping_type=&sort=&catby=book.keyword&query="

 140:             strURL2 = "&asin=&ean="

 141:             strURL3 = "&upc=&mpn=&mfr="

 142:             strURL4 = "prod2.pl?cat=book&op=buy&op2=buy&lang=en-us&search_country=us&shipto=us&cur=usd&zip=&nw=y&class=&pqcs=&quantity=&shipping_type=&sort=&catby=book.keyword&query="

 143:             strURL5 = "&asin=&ean="

 144:             strURL6 = "&upc=&mpn=&mfr="

 145:             Sheets("Temp").Select

 146:             With ActiveSheet.QueryTables.Add(Connection:= _

 147:                 strURL1 & strISBN & strURL2 & strISBN & strURL3 _

 148:                 , Destination:=Range("A1"))

 149:                 .Name = _

 150:                 strURL4 & strISBN & strURL5 & strISBN & strURL6

 151:                 .FieldNames = True

 152:                 .RowNumbers = False

 153:                 .FillAdjacentFormulas = False

 154:                 .PreserveFormatting = True

 155:                 .RefreshOnFileOpen = False

 156:                 .BackgroundQuery = True

 157:                 .RefreshStyle = xlInsertDeleteCells

 158:                 .SavePassword = False

 159:                 .SaveData = True

 160:                 .AdjustColumnWidth = True

 161:                 .RefreshPeriod = 0

 162:                 .WebSelectionType = xlSpecifiedTables

 163:                 .WebFormatting = xlWebFormattingNone

 164:                 .WebTables = "10"

 165:                 .WebPreFormattedTextToColumns = True

 166:                 .WebConsecutiveDelimitersAsOne = True

 167:                 .WebSingleBlockTextImport = False

 168:                 .WebDisableDateRecognition = False

 169:                 .WebDisableRedirections = False

 170:                 .Refresh BackgroundQuery:=False

 171:             End With

 172:             Sheets("Control Panel").Select

 173:             Dim str As String

 174:             ' get Title

 175:             Sheets("Control Panel").Cells(i, 5) = Sheets("Temp").Cells(1, 1)

 176:             ' get Author

 177:             Sheets("Control Panel").Cells(i, 6) = Trim(Replace(Sheets("Temp").Cells(2, 1), "Author:", ""))

 178:             ' split data of edition, publisher, format

 179:             Dim varSplit As Variant

 180:             Dim j As Integer

 181:             varSplit = Split(Sheets("Temp").Cells(3, 1), " ")

 182:             ' get Edition

 183:             For j = LBound(varSplit) To UBound(varSplit)

 184:                 If InStr(varSplit(j), "Edition") Then

 185:                     Sheets("Control Panel").Cells(i, 7) = varSplit(j + 1)

 186:                 End If

 187:                 'MsgBox "Item " & intIndex & " is " & avarSplit(intIndex) & _

 188:                 '" which is " & Len(avarSplit(intIndex)) & " characters long", vbInformation

 189:             Next

 190:             ' get Publisher

 191:             Dim iStart, iEnd As Integer

 192:             iStart = 0

 193:             iEnd = 0

 194:             For j = LBound(varSplit) To UBound(varSplit)

 195:                 ' find the start and end string of publisher

 196:                 If InStr(varSplit(j), "Publisher") Then

 197:                     iStart = j + 1

 198:                 End If

 199:                 If InStr(varSplit(j), "Hard") Or InStr(varSplit(j), "Paper") Then

 200:                     iEnd = j - 1

 201:                 End If

 202:             Next j

 203:             ' if iStart=0, no publisher info

 204:             If iStart = 0 Then

 205:                 Exit For

 206:             End If

 207:             ' if iEnd=0, join the rest strings as publisher

 208:             If iEnd = 0 Then

 209:                 iEnd = UBound(varSplit)

 210:             End If

 211:             Dim strArr(256) As String

 212:             Dim k As Integer

 213:             For k = iStart To iEnd

 214:                 strArr(k - iStart + 1) = varSplit(k)

 215:             Next k

 216:             Sheets("Control Panel").Cells(i, 8) = Trim(Join(strArr))

 217:             ' get format

 218:             For j = LBound(varSplit) To UBound(varSplit)

 219:                 If InStr(varSplit(j), "Hard") Then

 220:                     Sheets("Control Panel").Cells(i, 9) = Replace(varSplit(j), ":", "")

 221:                     Exit For

 222:                 End If

 223:                 If InStr(varSplit(j), "Paper") Then

 224:                     Sheets("Control Panel").Cells(i, 9) = Replace(varSplit(j), ":", "")

 225:                     Exit For

 226:                 End If

 227:             Next

 228:         End If ' if ISBN isNumeric

 229:     Next i

 230:     Sheets("Control Panel").Select

 231:     Columns("E:I").Select

 232:     Selection.Columns.AutoFit

 233: End Sub