LinZino的筆記

2017年2月8日星期三

CodeIgniter simple example

CodeIgniter simple example

application\controllers\Boundtest.php

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Boundtest extends CI_Controller {
public function __construct()
{
parent::__construct();
$this->load->model('Go');
}

public function boundview()
{
//zino

$data['output']=$this->Going_Model->get_user($ID);
$this->load->view('Boundtest',$data);
}

}

application\models\Go.php

<?php

class Going extends CI_Model {

public function __construct()
{
parent::__construct();

}

public function get_user($id)
{
//zino

$sql = 'SELECT * FROM `member`';

return $query = $this->db->query($sql)->result();

}

}

application\views\Boundtest.php

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<h1>test</h1>
<p><?php var_dump($output) ?> </p>
</body>
</html>

application\config\routes.php

$route['bound'] = 'Boundtest/boundview';

2016年12月21日星期三

install XAMPP .run file use command in ubuntu

user@user : /opt # ./xampp-linux-x64-5.6.28-0-installer.run --mode text
----------------------------------------------------------------------------
Welcome to the XAMPP Setup Wizard.

----------------------------------------------------------------------------
Select the components you want to install; clear the components you do not want
to install. Click Next when you are ready to continue.

XAMPP Core Files : Y (Cannot be edited)

XAMPP Developer Files [Y/n] :Y

Is the selection above correct? [Y/n]: Y

----------------------------------------------------------------------------
Installation Directory

XAMPP will be installed to /opt/lampp
Press [Enter] to continue:

----------------------------------------------------------------------------
Setup is now ready to begin installing XAMPP on your computer.

Do you want to continue? [Y/n]: Y

----------------------------------------------------------------------------
Please wait while Setup installs XAMPP on your computer.

Installing
0% ______________ 50% ______________ 100%
#########################################

----------------------------------------------------------------------------
Setup has finished installing XAMPP on your computer.

2016年8月24日星期三

Changing the screen resolution in raspberry pi 3 (HDMI) (lubuntu)

raspberry pi 3 HDMI 螢幕解析度設定(lubuntu)

raspberry pi 3 使用 HDMI 時，預設的螢幕解析度太高超級難閱讀，而預設安裝的Gui螢幕設定根本沒辦法改，甚至看了KDE官網使用 Xrandr 設定也都沒有用，之後才發現raspberry pi在開機有自己的設定方式，點這裡。

1. 先將開機設定檔備。
$ sudo cp /boot/config.txt /boot/config.txt.backup

2. 編輯config.txt
$sudo vim /boot/config.txt

找到以下設定，改後存檔。

hdmi_group=1
hdmi_mode=16

註解裡面都寫詳細的值代表什麼意思如下：
## hdmi_group
##     Defines the HDMI type
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Use the preferred group reported by the edid (Default)
##     1        CEA
##     2        DMT
##

這個指螢幕的規格，CEA 通常是電視，DMT為電腦螢幕。

來源：http://raspberrypi.stackexchange.com/questions/7332/what-is-the-difference-between-cea-and-dmt

## hdmi_mode
##     defines screen resolution in CEA or DMT format
##
##     H means 16:9 variant (of a normally 4:3 mode).
##     2x means pixel doubled (i.e. higher clock rate, with each pixel repeated
##                                  twice)
##     4x means pixel quadrupled (i.e. higher clock rate, with each pixel
##                                     repeated four times)
##     reduced blanking means fewer bytes are used for blanking within the data
##                      stream (i.e. lower clock rate, with fewer wasted bytes)
##
##     Value    hdmi_group=CEA                  hdmi_group=DMT
##     -------------------------------------------------------------------------
##     1        VGA                             640x350   85Hz
##     2        480p  60Hz                      640x400   85Hz
##     3        480p  60Hz  H                   720x400   85Hz
##     4        720p  60Hz                      640x480   60Hz
##     5        1080i 60Hz                      640x480   72Hz
......

因為我想要720P所以選4，1080p 選16

3.reboot

Ubuntu 16.04 compile latest Kernel

Ubuntu 16.04 編譯最新 Kernel 與安裝

在ubuntu 編譯與安裝kernel是比較簡單的，甚至連grub都會幫你安裝好

1. 抓最新的kernel版本（文章發表時版本為：4.8.0-rc3+)

$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

2.將資料夾複製到 /usr/src

$ sudo mv linux-2.6/ /usr/src/

3.安裝編譯需要的套件

$ sudo apt-get install ncurses ncurses-devel kernel-package libncurses5-dev libc6-dev libssl-dev modutils build-essential

libncurses5-dev 是為了可以使用 menuconfig 指令
libssl-dev 是編譯時需要

4. 進到切換到root 進到/usr/src/linux-2.6/

$ sudo su -
$ cd /usr/src/linux-2.6/

5.複製現有已經可以使用的.config

$cp /boot/config-4.4.0-34-generic ./.config

/boot/config-4.4.0-34-generic 資料夾會根據你的kernel不同不一樣

6.使用menuconfig 設定

$ make menuconfig
可以先load剛剛複製的.config檔在自己做喜好設定，完成後save。

7.編譯

$ fakeroot make-kpkg -j 4 --initrd kernel_image kernel_headers

8.安裝

$ dpkg -i linux-image-4.8.0-rc3+_4.8.0-rc3+-10.00.Custom_amd64.deb
$ dpkg -i linux-headers-4.8.0-rc3+_4.8.0-rc3+-10.00.Custom_amd64.deb

如果怕grub沒有幫你更新的化可以使用update-grub
$ update-grub

注意！安裝時/boot 要有足夠的硬碟空間，至少256M會比較保險！
如果電腦同時間有window要注意/boot/efi的位置！

9.重開機

$ reboot

應該預設的ubuntu第一個選項就是最新安裝好的kernel，但如果沒有可以到進階選項進入選擇不同kernel開機，如果編輯失敗也可以在進階選項回到原本正常的kernel

可以正常開機就恭喜你了！

2016年8月23日星期二

ubuntu make menuconfig error

root@zino-PC:/usr/src/linux-2.6# make menuconfig
HOSTCC scripts/kconfig/mconf.o
In file included from scripts/kconfig/mconf.c:23:0:
scripts/kconfig/lxdialog/dialog.h:38:20: fatal error: curses.h: No such file or directory
compilation terminated.
scripts/Makefile.host:124: recipe for target 'scripts/kconfig/mconf.o' failed
make[1]: *** [scripts/kconfig/mconf.o] Error 1
Makefile:545: recipe for target 'menuconfig' failed

make: *** [menuconfig] Error 2

solve:

apt-get install libncurses5 libncurses5-dev

來源：
http://www.ubuntu-tw.org/modules/newbb/viewtopic.php?topic_id=13590

2016年8月18日星期四

ubuntu 14.04 TLS install VNC server with gnome desketop (遠端桌面)

ubuntu 14.04 TLS install VNC server with gnome desketop (遠端桌面)

1.安裝 gnome 相關套件

# sudo apt-get install gnome-panel gnome-settings-daemon metacity nautilus gnome-terminal # apt-get install gnome-panel gnome-settings-daemon metacity nautilus gnome-terminal vnc4server

2.啟動一次再家目錄建立預設資料夾

user@ubuntu:~$ vncserver

You will require a password to access your desktops.

Password:
Verify:
xauth: file /home/user/.Xauthority does not exist

New 'ubuntu:1 (user)' desktop is ubuntu:1

Creating default startup script /home/user/.vnc/xstartup
Starting applications specified in /home/user/.vnc/xstartup
Log file is /home/user/.vnc/ubuntu:1.log

3.編輯 /home/user/.vnc/xstartup 檔套用以下設定

#!/bin/sh

export XKL_XMODMAP_DISABLE=1
unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &

gnome-panel &
gnome-settings-daemon &
metacity &
nautilus &
gnome-terminal &

4.再次啟動

user@ubuntu:~$ vncserver -kill :1

Killing Xvnc4 process ID 45058

user@ubuntu:~$ vncserver

New 'ubuntu:1 (user)' desktop is ubuntu:1

Starting applications specified in /home/user/.vnc/xstartup

Log file is /home/user/.vnc/ubuntu:1.log

5.在別台機器啟動 Remmina 遠端桌面客戶端

6.新增並輸入 IP:Port 帳號密碼

7.連線成功！！

參考來源：http://askubuntu.com/questions/475023/how-to-make-vnc-server-work-with-ubuntu-desktop-without-xfce

參考:https://docs.microsoft.com/zh-tw/azure/virtual-machines/linux/classic/remote-desktop

https://www.digitalocean.com/community/tutorials/how-to-set-up-vnc-server-on-debian-8

https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-on-ubuntu-14-04

/etc/vnc.conf

vi /etc/alternatives/vncserver -localhost

在localhost 監聽

vncserver -localhost

ssh forward

ssh -L 5901:127.0.0.1:5901 -N -f -l user server_ip_address

移除ssh forward

If you are using Linux you can kill the process by:

ps aux | grep ssh

and then use

kill <id>

To kill the process.

If the kill command is not successfull you can try

kill -9 <id>

來源:https://superuser.com/questions/87014/how-do-i-remove-an-ssh-forwarded-port

移除監聽

vncserver -kill :2

2016年7月19日星期二

scala compiler -classpath with multiple JAR files

1. To compile a scala file and include a Jar file, enter the following command line:

scala  -classpath /home/user/jarFile.jar scalaFile.scala

2. To compile a scala file and include multiple Jar file, enter the following command line:

In Linux OS:
scala  -classpath "/absolute/path/jarFile1.jar:/absolute/path/jarFile2.jar" scalaFile.scala

In Winsows OS:
scala  -classpath "C:\absolute/path/jarFile1.jar;C:/absolute/path/jarFile2.jar" scalaFile.scala

scala 多個jar包編譯

1.scala 編譯時僅有引用一個jar包:

scala  -classpath /home/user/jarFile.jar scalaFile.scala

2. scala 編譯時僅有引用一個jar包:
在Windows底下是分號要注意，Linux則是冒號，也要注意分號跟冒號分隔前後不可以有空白，也要使用絕對路徑，例如:~/xxx/yyy/filejar.jar 是不可以的。

In Linux OS:
scala  -classpath "/absolute/path/jarFile1.jar:/absolute/path/jarFile2.jar" scalaFile.scala

In Winsows OS:
scala  -classpath "C:\absolute/path/jarFile1.jar;C:/absolute/path/jarFile2.jar" scalaFile.scala

訂閱：文章 (Atom)

2017年2月8日 星期三

2016年12月21日 星期三