Blackberry OS 6.0 is out for 9300

In case you didn’t know:

Official Operating System 9300 – 6.0.0.380 from StarHub Ltd.

Here is some more operating system news for you folks that own the BlackBerry Curve 9300. StarHub Ltd. has made 6.0.0.380 official for their customers, but remember, anybody can load this up by deleting the vendor.xml file.

If you don’t know what a vendor file is or you just need help in general, please check out our How To Thread that will guide you through upgrading your BlackBerry.
This one thread will get you through the entire process with pictures, video, and more.

and this is the unofficial one:

OS 6.0.0.418 Leaked for the Curve 9300

bykalyhan

Following behind the Bold 9700, the Curve 9300 now gets some love. It was just last week we saw the Curve 9300 get OS 6.0.0.380, which was supposed to be a fairly good build. Now, OS 6.0.0.418 has been leaked. We aren’t sure of the changes as yet, so be sure to let us know what you think.


Warning:
Please remember that this IS NOT an official release OS. If you wish to install this OS keep in mind that this may cause your phone to not function correctly. BlackberryOS and any other BlackberryOS Official sites are not responsible. If you are not comfortable and/or unsure as how to upgrade to this OS, please click the link below.

quoted from:blackberryos.com andblackberryos.com

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Unix Command: Not in the Sudoers File

The file /etc/sudoers, has the rules that users have to follow when using sudo command.

If you are (or was) running Ubuntu, you may know that by default the root account is not usable in Ubuntu, because it has no password, you may assign one and use it as in every other Linux, but that is another story. On normal Ubuntu Linux machines you need to use sudo command to perform operations as root.

I like that approach, and even though I am using Debian, I always give my account root rights, so I can run commands as root without changing to root.

sudo make me a sandwich

Comics from XKCD

As you can see from this funny picture, using sudo makes your system reacts as if was another user who are given the order.

Two of the best advantages about using sudo are:

  • Restringed privileges
  • Logs of the actions done by users

Well but in order to use sudo we first need to configure the sudoers file.

Do not edit directly the file

To edit it, use the command

visudo

You will see a file more or less like this.

# /etc/sudoers
#
# This file MUST be edited with the 'visudo' command as root.
#
# See the man page for details on how to write a sudoers file.
#

Defaults        env_reset

# Host alias specification

# User alias specification

# Cmnd alias specification

# User privilege specification
root    ALL=(ALL) ALL

As you can see there is basically one line

root ALL=(ALL) ALL

This lines means that the user root can execute from ALL terminals, acting as ALL (any) users, and run ALL (any) command.

So the first part is the user, the second is the terminal from where the user can use sudo, the third is as which user he may act, and the last one, is which commands he may run.

Let’s see some other examples.

operator ALL= /sbin/poweroff

This makes that users operator can from any terminal, run the command poweroff.

You can also create aliases for: users -> User_Alias, run comands as other users -> Runas_Alias, host -> Host_Alias and command-> Cmnd_Alias

These are some examples:

User_Alias OPERATORS = joe, mike, jude
Runas_Alias OP = root, operator
Host_Alias OFNET = 10.1.2.0/255.255.255.0
Cmnd_Alias PRINTING = /usr/sbin/lpc, /usr/bin/lprm

As you can see the alias OPERATORS includes the users joe, mike and jude, the alias OP includes the users root and operator, alias OFNET includes the network 10.1.2.0 (all the C class), and the command alias PRINTING includes the commands lpc and lprm.

So a typical sudoers file may look like this.

 User_Alias     OPERATORS = joe, mike, jude
 Runas_Alias    OP = root, operator
 Host_Alias     OFNET = 10.1.2.0/255.255.255.0
 Cmnd_Alias     PRINTING = /usr/sbin/lpc, /usr/bin/lprm

OPERATORS ALL=ALL

#The users in the OPERATORS group can run any command from
 any terminal.

linus ALL=(OP) ALL

# The user linus can run any command from any terminal as any 
user in the OP group (root or operator).

user2 OFNET=(ALL) ALL

# user user2 may run any command from any machine in the 
OFNET network, as any user.

user3 ALL= PRINTING

# user user3 may run lpc and lprm from any machine.

go2linux ALL=(ALL) ALL

# user go2linux may run any command from any machine acting
 as any user. (like Ubuntu)

If you want not to be asked for a password use this form

go2linux ALL=(ALL) ALL NO PASSWD: ALL

You may want to read sudoers man page

Edit: Sep. 09-2010

Here are some tips for vi:

1. Switch to root, (su root), then run visudo, (as above).
2. Find where it says “root ALL=(ALL) ALL”.
3. Type “o” to insert a new line below it.
4. Now type what you want to insert, eg “username ALL=(ALL) ALL”.
5. Hit esc to exit insert-mode.
6. Type “:x” to save and exit.

Credit to: http://twitter.com/h7dd3rs

personal notes: to edit the sudoers file use the ‘visudo’ command as root

quoted from:go2linux.org,linuxquestions.org

Compress JavaScript dengan Tools Rujukan Google

Javascript memberikan sentuhan yang sangat berbeda dan lebih beragam untuk desain web. Berbagai effect dan fungsi yang menarik bisa di tempelkan pada blog kita dengan Javascript. Namun, penambahan javascript menambah berat loading blog kita. Meski kini load blog / site performance (baca: Kinerja Situs di Webmaster Tools) menjadi patokan penting pemeringakatan Google, menghindari javascript bukan satu-satunya solusi. Berikut adalah beberapa solusi untuk Anda…

Gunakan Seperlunya
Gunakan javascript seperlunya. Jika effect atau fungsi tidak terlalu berpengaruh untuk kemajuan blog, lebih baik tidak usah dipasang. Saya menggunakan javascript untuk membuat widget-widget penunjang pageviews seperti komentar terbaru atau artikel terkait. Sementara untuk effect yang memperhalus tampilan dan lain-lain, saya cenderung urung menggunakannya.

Buat Milik Anda Pribadi
Pastikan kode javascript Anda adalah untuk blog Anda saja. Jangan gunakan langsung script yang dibagi ditempat umum, karena kemungkinan script itu dipakai oleh banyak orang bersamaan. Pelajari selengkapnya di: Membuat JavaScript Milik Anda Pribadi

Tempat Hosting Script Berpengaruh
Pilih tempat hosting yang terpercaya dan jarang error. Jika ingin kinerja terbaik maka gunakanlah hosting google atau hosting berbayar. Saya pernah mencoba berbagai hosting gratis dan masalah error atau script gagal di load selalu membayangi. Anda punya rujukan temapt yang bagus? Silahkan tambahkan lewat komentar…
Baca: Beberapa Pilihan Hosting

Compress JavaScript
Ini adalah poin utama postingan ini. Dengan meng-compress javascript, kita bisa mendapatkan kinerja yang jauh lebih baik. Ada banyak pilihan tmpat untuk compress javascript online seperti:
Javascriptcompressor.Com
– Layanan online yang support YUI Compressor nya Yahoo seperti Refresh-Sf Compressor atau 2Clics YUI.
– Atau Anda bisa menggunakan tools rujukan Google, yakni Closure Compiler (Baca: Artikel Google tentang Compress Javascript).

Penggunaan Closure Compiler
Untuk menggunakan alat ini, silahkan Anda:
– Klik untuk pergi ke Closure-Compiler Online, atau Anda bisa download Closure-Compiler disini.
– Ini adalah contoh penggunaan online. Silahkan Anda masukan alamt script Anda. Untuk mencoba, misalkan kita gunakan Script recent comments yang beralamatkan di http://bloggerhosting.appspot.com/serve/amen24.googlepages.com/showrecentcomments.js
– Lalu klik Add
– Saya anjurkan Anda memilih Simple.
Whitespace only: Menghapus spasi tidak perlu dan komentar. Mengcompress hingga 28%
Simple: Ini lebih canggih karena mengenal perubahan variable dan penghapusan beberapa yang tidak perlu. Mengcompressi rata-rata hingga 42%, saat saya menggunakannya mampu mengcompressi hingga 54%.
Advanced: Ini tidak saya anjurkan, meski bisa mengcompressi hingga 62%. Kode bahkan bisa hilang sama sekali dan dibabat habis.

– Setelah memilih option tingkat compress, silahkan klik Compile.
– Kode yang dihasilkan ada disebelah kanan. Silahkan hosting script yang telah di compress pada kotak. Kode bisa juga diakses dengan klik pada link default.js.

Jika pada contoh di atas compress script dilakukan dengan memasukkan URL alamat script, Anda bisa memasukkan script langsung pada kolom sebelah kiri. Dan sama, hasil compressi muncul di kolom sebelah kanan. Silahkan mencoba, semoga bermanfaat…

Selengkapnya di http://www.MasDoyok.co.cc Compress JavaScript dengan Tools Rujukan Google

quoted from: masdoyok.co.cc