- it's best to put /usr, /var, /tmp, and /home each on their own partitions separate from the / partition.
- /usr/local partition if you plan to install many programs that are not part of the Debian distribution.
Ref:
http://www.debian.org/releases/stable/i386/apcs03.html.en
http://www.debian.org/releases/stable/i386/ch06s03.html.en
/tmp
====
- Putting /tmp on its own partition is a good idea.
(Beware that the default path for Brasero to create iso file is /tmp)
(All files in /tmp will be purge every time debian restart)
/var
===
- If your machine will be a mail server, you might need to make /var/mail a separate partition.
A mail server getting spammed with e-mail can easily fill a partition.
If you made /var/mail a separate partition on the mail server, most of the system will remain working even if you get spammed.
Storing
- postgres data files?
- apt cache
/usr
====
contain static data
The usage space of /usr in my desktop is ~3G.
/boot
====
Arch: 32MB (https://wiki.archlinux.org/index.php/Beginners%27_Guide)
Ubuntu: About 500 MB is recommended. (http://www.linuxbsdos.com/2010/10/12/ubuntu-10-10-manual-disk-partitioning-guide/)
Redhat: Minimum size = 250 MB (http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Installation_Guide/s2-diskpartrecommend-x86.html)
Debian: the boot partition should be ext2 or ext3. (http://forums.citrix.com/thread.jspa?threadID=284981)
swap
====
- By putting swap on a separate partition, Linux can make much more efficient use of it.
It is possible to force Linux to use a regular file as swap, but it is not recommended.
(http://???)
On 32-bit architectures (i386, m68k, 32-bit SPARC, and PowerPC), the maximum size of a swap partition is 2GB.Ref: https://help.ubuntu.com/11.04/installation-guide/amd64/apcs03.html
Swap should equal 2x physical RAM for up to 2 GB of physical RAM, and then an additional 1x physical RAM for any amount above 2 GB, but never less than 32 MB.
So, if:
M = Amount of RAM in GB, and S = Amount of swap in GB, then
If M < 2
S = M *2
Else
S = M + 2
Using this formula, a system with 2 GB of physical RAM would have 4 GB of swap,
while one with 3 GB of physical RAM would have 5 GB of swap.
Creating a large swap space partition can be especially helpful if you plan to upgrade your RAM at a later time.
For systems with really large amounts of RAM (more than 32 GB) you can likely get away with a smaller swap partition (around 1x, or less, of physical RAM).
Ref: http://www.centos.org/docs/5/html/Installation_Guide-en-US/s1-diskpartitioning-s390.html
File Systems (Partition Type)
==============================
- if your partition is larger than around 6GB, choose ext3 as your partition type.
- Ext2 partitions need periodic file system integrity checking, and this can cause delays during booting when the partition is large.
(http://www.debian.org/releases/stable/i386/apcs03.html.en)
Fedora 14 >
ext4 for /boot, / is mandatory. (shown during installation)
https://ext4.wiki.kernel.org/index.php/Frequently_Asked_Questions >> Break 32000 subdirectory limit
As of 27-8-2011, VirtualBox still have some problems on ext4.
Tuesday, May 24, 2011
ubuntu packages for development
HTML Editor
===========
sudo apt-get -y install quanta
# Quanta Plus is a web development tool for the KDE software users.
sudo apt-get -y install kcolorchooser kruler
intellij-idea
==============
cannot distribute the intellij idea files since that is not allowed by it's license, so uploading it to a public PPA would put you in breach of the license.
just download the tarball from the homepage, unpack it in your home dir, edit the start script idea.sh to export the JDK_HOME path, and you're good to go.
tar xfz idea-7.0.1.tar.gz ./usr/lib/
/bin/sh -c "export JDK_HOME=/usr/lib/jvm/java-6-sun&&/data/idea-IC-103.255/bin/idea.sh"
Ref: http://ubuntuforums.org/showthread.php?t=1705161
Thanks: http://blog.jeroenreijn.com/2010/01/creating-intellij-launcher-on-ubuntu.html
virtualbox
===========
http://www.virtualbox.org/wiki/Linux_Downloads
ssh
===
sudo apt-get install openssh-server
https://help.ubuntu.com/11.04/serverguide/C/openssh-server.html
===========
sudo apt-get -y install quanta
# Quanta Plus is a web development tool for the KDE software users.
sudo apt-get -y install kcolorchooser kruler
intellij-idea
==============
cannot distribute the intellij idea files since that is not allowed by it's license, so uploading it to a public PPA would put you in breach of the license.
just download the tarball from the homepage, unpack it in your home dir, edit the start script idea.sh to export the JDK_HOME path, and you're good to go.
tar xfz idea-7.0.1.tar.gz ./usr/lib/
/bin/sh -c "export JDK_HOME=/usr/lib/jvm/java-6-sun&&/data/idea-IC-103.255/bin/idea.sh"
Ref: http://ubuntuforums.org/showthread.php?t=1705161
Thanks: http://blog.jeroenreijn.com/2010/01/creating-intellij-launcher-on-ubuntu.html
virtualbox
===========
http://www.virtualbox.org/wiki/Linux_Downloads
ssh
===
sudo apt-get install openssh-server
https://help.ubuntu.com/11.04/serverguide/C/openssh-server.html
ubuntu home-user packages natty narwhal 11.04
my favorite home-user packages on ubuntu
Thai fonts
===========
sudo apt-get -y install ttf-dejavu ttf-mscorefonts-installer otf-thai-tlwg ttf-thai-arundina ttf-thai-tlwg
> Thai fonts in OpenType format
> Font Loma, ...
Java
=====
sudo add-apt-repository ppa:ferramroberto/java
sudo apt-get update
sudo apt-get install sun-java6-jdk sun-java6-plugin sun-java6-fonts
Internet
==========
sudo apt-get -y install firefox flashplugin-installer
# Firefox is a GTK application
https://addons.mozilla.org/en-US/firefox/addon/flash-aid/
sudo apt-get -y install chromium-browser
http://www.opera.com/browser/download/
sudo apt-get -y install pidgin
Images
======
sudo apt-get -y install geeqie
# Geeqie is a lightweight Gtk+ based image viewer for Unix like operating systems.
sudo apt-get -y install kipi-plugins
sudo apt-get -y install kolourpaint4
sudo apt-get -y install kcolorchooser kruler
Office
======
sudo apt-get -y install libreoffice-writer libreoffice-impress libreoffice-calc libreoffice-l10n-th
# Similar to OpenOffice.org, LibreOffice relies heavily on Java : http://www.linux-magazine.com/Online/Blogs/Productivity-Sauce/LibreOffice-OpenOffice.org-Liberated
Media player
==============
sudo apt-get -y install vlc gstreamer gstreamer-plugins-good gstreamer-plugins-bad gstreamer-plugins-ugly
http://www.unixmen.com/linux-tutorials/linux-distributions/linux-distributions4-ubuntu/1656-how-to-add-medibuntu-repository-in-ubuntu-via-terminal-and-gui
Others
=======
sudo apt-get -y install unrar zip unzip p7zip-full p7zip-rar rar
sudo apt-get -y install goldendict
# goldendict use Qt 4
# for creating custom dictionary
sudo apt-get -y install stardict-tools
http://www.playoss.com/community_project/kpe
http://linux-software-news-tutorials.blogspot.com/2011/04/things-to-do-after-install-ubuntu-natty.html
http://www.unixmen.com/linux-tutorials/linux-distributions/linux-distributions4-ubuntu/1540-top-things-to-do-after-installing-ubuntu-1104-natty-narwhal
https://help.ubuntu.com/community/FreeSoftwareAlternatives
Nautilus Elementary
สำหรับปรับแต่ง Nautilus ได้อย่างอิสระและสวยงามอีกด้วย
KDE
====
sudo apt-get -y install kde-service-menu-fuseiso kscreensaver kwrite
kim4: downlaod at http://kde-apps.org/content/show.php?content=11505
and read manual
Theme: http://opendesktop.org/content/show.php?content=76197
Thai fonts
===========
sudo apt-get -y install ttf-dejavu ttf-mscorefonts-installer otf-thai-tlwg ttf-thai-arundina ttf-thai-tlwg
> Thai fonts in OpenType format
> Font Loma, ...
Java
=====
sudo add-apt-repository ppa:ferramroberto/java
sudo apt-get update
sudo apt-get install sun-java6-jdk sun-java6-plugin sun-java6-fonts
Internet
==========
sudo apt-get -y install firefox flashplugin-installer
# Firefox is a GTK application
https://addons.mozilla.org/en-US/firefox/addon/flash-aid/
sudo apt-get -y install chromium-browser
http://www.opera.com/browser/download/
sudo apt-get -y install pidgin
Images
======
sudo apt-get -y install geeqie
# Geeqie is a lightweight Gtk+ based image viewer for Unix like operating systems.
sudo apt-get -y install kipi-plugins
sudo apt-get -y install kolourpaint4
sudo apt-get -y install kcolorchooser kruler
Office
======
sudo apt-get -y install libreoffice-writer libreoffice-impress libreoffice-calc libreoffice-l10n-th
# Similar to OpenOffice.org, LibreOffice relies heavily on Java : http://www.linux-magazine.com/Online/Blogs/Productivity-Sauce/LibreOffice-OpenOffice.org-Liberated
Media player
==============
sudo apt-get -y install vlc gstreamer gstreamer-plugins-good gstreamer-plugins-bad gstreamer-plugins-ugly
http://www.unixmen.com/linux-tutorials/linux-distributions/linux-distributions4-ubuntu/1656-how-to-add-medibuntu-repository-in-ubuntu-via-terminal-and-gui
Others
=======
sudo apt-get -y install unrar zip unzip p7zip-full p7zip-rar rar
sudo apt-get -y install goldendict
# goldendict use Qt 4
# for creating custom dictionary
sudo apt-get -y install stardict-tools
http://www.playoss.com/community_project/kpe
http://linux-software-news-tutorials.blogspot.com/2011/04/things-to-do-after-install-ubuntu-natty.html
http://www.unixmen.com/linux-tutorials/linux-distributions/linux-distributions4-ubuntu/1540-top-things-to-do-after-installing-ubuntu-1104-natty-narwhal
https://help.ubuntu.com/community/FreeSoftwareAlternatives
Nautilus Elementary
สำหรับปรับแต่ง Nautilus ได้อย่างอิสระและสวยงามอีกด้วย
KDE
====
sudo apt-get -y install kde-service-menu-fuseiso kscreensaver kwrite
kim4: downlaod at http://kde-apps.org/content/show.php?content=11505
and read manual
Theme: http://opendesktop.org/content/show.php?content=76197
Performance tuning KDE
disable Strigi
===============
System Settings -> Desktop Search
There are 2 components to Nepomuk.
The component that sucks up CPU and IO is the Strigi file indexing service.
This extracts metadata from files.
The second and more important component is the Nepomuk metadata service.
This is where the file indexer stores metadata, but also, applications using the nepomuk libraries can store arbitrary data.
If you disable all of Nepomuk, KMail will not be able to do email address completion from your address books,
or distribution lists, file rating and tagging will not work.
By disabling all of Nepomuk you save about 50MB for the virtuoso database backend but very little CPU and IO.
You can disable Strigi on its own if you don’t care about file search and indexing.
http://www.freetechie.com/blog/disable-nepomuk-desktop-search-on-kde-4-4-2-kubuntu-lucid-10-04/
===============
System Settings -> Desktop Search
There are 2 components to Nepomuk.
The component that sucks up CPU and IO is the Strigi file indexing service.
This extracts metadata from files.
The second and more important component is the Nepomuk metadata service.
This is where the file indexer stores metadata, but also, applications using the nepomuk libraries can store arbitrary data.
If you disable all of Nepomuk, KMail will not be able to do email address completion from your address books,
or distribution lists, file rating and tagging will not work.
By disabling all of Nepomuk you save about 50MB for the virtuoso database backend but very little CPU and IO.
You can disable Strigi on its own if you don’t care about file search and indexing.
http://www.freetechie.com/blog/disable-nepomuk-desktop-search-on-kde-4-4-2-kubuntu-lucid-10-04/
installing lubuntu 11.04 natty narwhal
Download
=========
The graphical installation system (Ubiquity) requires more RAM than Lubuntu needs to run.
you will also find this alternate installation method faster if you have less than 256MB RAM than using the standard install method.
Please be aware that your system may seem to 'hang' (stop) at about 90% (dpkg),
it has not; it just takes a little time (up to 90 minutes).
Ref: https://help.ubuntu.com/community/Lubuntu/Documentation/AlternateInstall
Partition
===========
http://siripong-computer-tips.blogspot.com/2011/05/partitions-type-and-sizes.html
after installing
================
sudo apt-get autoremove
sudo apt-get update && sudo apt-get upgrade
sudo apt-get -y install zenity
# For im-switch (Input Method Switcher)
Note: LXDE (Lightweight X11 Desktop Environment) is based on GTK+
Language Support
================
1. Go to Preferences --> Language Support.
You will be asked to completely install language support, do so.
2. Click on the 'Install / Remove Languages' button to pull up the list of available languages
3. .....
Ref: https://help.ubuntu.com/community/Lubuntu/Documentation/LanguageSupport
Keyboard layout switcher
========================
add this line
@setxkbmap -option grp:switch,grp:alt_shift_toggle,grp_led:scroll us,th
to /etc/xdg/lxsession/Lubuntu/autostart
Thanks: http://kobinter.blogspot.com/2011/05/lubuntu-1104.html
Autostart applications
======================
There are two types:
1) autostarted applications go to menu -> preferences -> desktop session settings
2) Lubuntu and LXDE has some essential applications that will run everytime you start your system.
These kind of programs manage your powersettings for your laptop or netbook or draw icons on the desktop.
If you don't need these applications as you are using a desktop computer
or simply don't need desktop icons
you can disable those applications by editing the autostart script of the lubuntu session.
This file needs root rights to be modified and is located under /etc/xdg/lxsession/Lubuntu/autostart.
Ref: http://lubuntu.net/blog/lubuntu-screencast-extreme-memory-tuning
More
====
http://wiki.lxde.org/en/LXDE:Questions << FAQ (such as How do I change the hotkeys?)
http://lubuntu.net/
https://help.ubuntu.com/community/Lubuntu/Documentation
Notes
=====
The directory tree is not yet added to PCManFM itself. >> http://blog.lxde.org/?p=828
Lubuntu Control Center
======================
http://lubuntu.net/blog/lubuntu-screencast-lubuntu-control-center
=========
The graphical installation system (Ubiquity) requires more RAM than Lubuntu needs to run.
you will also find this alternate installation method faster if you have less than 256MB RAM than using the standard install method.
Please be aware that your system may seem to 'hang' (stop) at about 90% (dpkg),
it has not; it just takes a little time (up to 90 minutes).
Ref: https://help.ubuntu.com/community/Lubuntu/Documentation/AlternateInstall
Partition
===========
http://siripong-computer-tips.blogspot.com/2011/05/partitions-type-and-sizes.html
after installing
================
sudo apt-get autoremove
sudo apt-get update && sudo apt-get upgrade
sudo apt-get -y install zenity
# For im-switch (Input Method Switcher)
Note: LXDE (Lightweight X11 Desktop Environment) is based on GTK+
Language Support
================
1. Go to Preferences --> Language Support.
You will be asked to completely install language support, do so.
2. Click on the 'Install / Remove Languages' button to pull up the list of available languages
3. .....
Ref: https://help.ubuntu.com/community/Lubuntu/Documentation/LanguageSupport
Keyboard layout switcher
========================
add this line
@setxkbmap -option grp:switch,grp:alt_shift_toggle,grp_led:scroll us,th
to /etc/xdg/lxsession/Lubuntu/autostart
Thanks: http://kobinter.blogspot.com/2011/05/lubuntu-1104.html
Autostart applications
======================
There are two types:
1) autostarted applications go to menu -> preferences -> desktop session settings
2) Lubuntu and LXDE has some essential applications that will run everytime you start your system.
These kind of programs manage your powersettings for your laptop or netbook or draw icons on the desktop.
If you don't need these applications as you are using a desktop computer
or simply don't need desktop icons
you can disable those applications by editing the autostart script of the lubuntu session.
This file needs root rights to be modified and is located under /etc/xdg/lxsession/Lubuntu/autostart.
Ref: http://lubuntu.net/blog/lubuntu-screencast-extreme-memory-tuning
More
====
http://wiki.lxde.org/en/LXDE:Questions << FAQ (such as How do I change the hotkeys?)
http://lubuntu.net/
https://help.ubuntu.com/community/Lubuntu/Documentation
Notes
=====
The directory tree is not yet added to PCManFM itself. >> http://blog.lxde.org/?p=828
Lubuntu Control Center
======================
http://lubuntu.net/blog/lubuntu-screencast-lubuntu-control-center
Friday, May 20, 2011
Module Setting on Intellij for Google map on Android
เลือก Scope เป็น Provided
Otherwise
05-20 10:58:50.781: ERROR/AndroidRuntime(17761): FATAL EXCEPTION: main
java.lang.NoClassDefFoundError: com.package.ViewMap
at com.package.ListBridge.gotoViewMap(ListBridge.java:57)
at com.package.ListBridge.access$000(ListBridge.java:10)
at com.package.ListBridge$1.onClick(ListBridge.java:19)
at android.view.View.performClick(View.java:2408)
at android.view.View$PerformClick.run(View.java:8818)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:871)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalAccessError: Class ref in pre-verified class resolved to unexpected implementation
at dalvik.system.DexFile.defineClass(Native Method)
at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:209)
at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:203)
at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
... 14 more
Tuesday, May 10, 2011
WRT54GL
specification
==============
http://www.dd-wrt.com/wiki/index.php/Linksys_WRT54GL
Term
====
The CFE file, which is the program that boots the router and is specific to your router,
the NVram which is the memory for settings
the kernel which is the firmware.
Installing programs on a router, known as firmware, are achieved by a method called flashing.
Brick = a device that cannot function in any capacity (such as a device with damaged firmware).
more at http://en.wikipedia.org/wiki/Brick_(electronics)
This is SUPER easy and REALLY important.
=========================================
http://www.dd-wrt.com/wiki/index.php/CFE_backup
or
http://192.168.1.101/backup/cfe.bin
Some people share efc online
but your MAC address is stored in the CFE file
Ref: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486
ประสิทธิภาพ
===========
ระยะทางประมาณ 4-5 กม.
http://ton.packetlove.com/blog/life-style/wrt54gl-point-to-point.html
การปรับค่าเพื่อประสิทธิภาพ
============================
Do not raise your TX value
should fix signal issues with better antennas not power.
Many routers do much better with LOWER TX values,
around 40-50 especially those with the crappy internal antennas (linksys ashtrays).
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486
ยิ่งปรับ tx power เยอะ, speed รับส่ง ยิ่งต่ำ
http://www.overclockzone.com/forums/showthread.php?t=796019
more about external antenna
===========================
(yagi, panel antenna, biquad dish antenna, gain, milliwats, dbi, dbd, etc.)
see http://www.dd-wrt.com/phpBB2/viewtopic.php?t=43810,
Others
======
network analysis Software
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=57417
Wi-Fi tools that help troubleshoot WLAN networks.
http://www.metageek.net/products/inssider/
http://www.wifimove.com/OurFiles/Articles/Linksys_WRT54G_Ultimate_Hacking/Linksys_WRT54G_Ultimate_Hacking.pdf
Firmware
========
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=52043
http://tarifa.sourceforge.net/
http://www.polarcloud.com/tomato
Compile kernel เอง
http://www.electoday.com/home/space.php?uid=59&do=blog&id=112
==============
http://www.dd-wrt.com/wiki/index.php/Linksys_WRT54GL
Term
====
The CFE file, which is the program that boots the router and is specific to your router,
the NVram which is the memory for settings
the kernel which is the firmware.
Installing programs on a router, known as firmware, are achieved by a method called flashing.
Brick = a device that cannot function in any capacity (such as a device with damaged firmware).
more at http://en.wikipedia.org/wiki/Brick_(electronics)
This is SUPER easy and REALLY important.
=========================================
http://www.dd-wrt.com/wiki/index.php/CFE_backup
or
http://192.168.1.101/backup/cfe.bin
Some people share efc online
but your MAC address is stored in the CFE file
Ref: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486
ประสิทธิภาพ
===========
ระยะทางประมาณ 4-5 กม.
http://ton.packetlove.com/blog/life-style/wrt54gl-point-to-point.html
การปรับค่าเพื่อประสิทธิภาพ
============================
Do not raise your TX value
should fix signal issues with better antennas not power.
Many routers do much better with LOWER TX values,
around 40-50 especially those with the crappy internal antennas (linksys ashtrays).
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486
ยิ่งปรับ tx power เยอะ, speed รับส่ง ยิ่งต่ำ
http://www.overclockzone.com/forums/showthread.php?t=796019
more about external antenna
===========================
(yagi, panel antenna, biquad dish antenna, gain, milliwats, dbi, dbd, etc.)
see http://www.dd-wrt.com/phpBB2/viewtopic.php?t=43810,
Others
======
network analysis Software
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=57417
Wi-Fi tools that help troubleshoot WLAN networks.
http://www.metageek.net/products/inssider/
http://www.wifimove.com/OurFiles/Articles/Linksys_WRT54G_Ultimate_Hacking/Linksys_WRT54G_Ultimate_Hacking.pdf
Firmware
========
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=52043
http://tarifa.sourceforge.net/
http://www.polarcloud.com/tomato
Compile kernel เอง
http://www.electoday.com/home/space.php?uid=59&do=blog&id=112
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