How2 Launch Firefox (Safe Mode) via Ubuntu’s CLI
Posted On August 10, 2010 at 12:54 in How2, Tweaks, Ubuntu
firefox -safe-mode
Archive for the ‘How2’ Category
Upgrading to WordPress v3.0.X via Command-Line
Posted On August 3, 2010 at 10:51 in How2, WordPress
Preparing your WordPress Upgrade
From time to time you may want to update your WordPress installation to the latest version. You might want to do this because you’ve seen a message at the top of your Dashboard telling you that a new release is available, because you’ve been made aware of some useful new functionality, or because a security fix has been released.
Check Requirements
Whatever the reason for updating, before getting started it is best to check the current minimum requirements page first to make sure that your web host has the required versions of PHP and MySQL. (If you are not sure, then your hosting provider should be able to tell you.)
Take a Backup
The next thing to do is to take a backup of your database. All your posts and Pages are held in the database, so you will need to have a copy of it in case, for whatever reason, you change your mind after upgrading and need to go back. If you are not sure how to backup your database, then complete instructions can be found in the WordPress Backups section of the Codex.
Disable Plugins
The final preperation step is to disable plugins. Now, you don’t have to do this, but every now and again a plugin hasn’t been updated to work with the latest version of WordPress, and causes a problem after the upgrade. So, it’s best to try and avoid that, yes? You can easily disable your plugins by heading to the Manage Plugins page in the Dashboard, changing the “Bulk Actions” pull down menu to “Deactivate” and clicking “Apply”.
Ready to Update
Now that you’ve checked that you’re ready to update, you’ve turned off your plugins and you’ve got your backup, it’s time to get started.
Step 1: Download & unzip the WordPress package from:
http://wordpress.org/download/
- If you will be uploading WordPress to a remote web server, download the WordPress package to your computer with a web browser and unzip the package.
- If you will be using FTP, skip to the next step – uploading files is covered later.
- If you have shell access to your web server, and are comfortable using console-based tools, you may wish to download WordPress directly to your web server using wget (or lynx or another console-based web browser) if you want to avoid FTPing:
- wget http://wordpress.org/latest.tar.gz
- Then unzip the package using:
- tar -xzvf latest.tar.gzThe WordPress package will extract into a folder called wordpress in the same directory that you downloaded latest.tar.gz.
- Delete the old
wp-includesandwp-admindirectories on your web host (through your FTP or shell access).
Then, run the following commands to unpack and copy the contents into your web directory.
tar -xzvf latest.tar.gz
sudo cp -R wordpress/* /var/www/
- If you do not have shell access to your web server, or you are not comfortable using console-based tools, you may wish to deploy WordPress directly to your web server using ZipDeploy.
Step 2: Update your installation files
This will update your database to be compatible with the latest code
Visit your main WordPress admin page at /wp-admin. You may be asked to login again. If a database upgrade is necessary at this point, WordPress will detect it and give you a link to a URL like http://example.com/wordpress/wp-admin/upgrade.php. Follow that link and follow the instructions. You should do this as soon as possible after step 1.
That’s it, you’re complete!
7-Ways In Keeping Your Computer Safe
Posted On July 26, 2010 at 16:48 in How2
# 1. Strong Passwords
# 2. Give a separate user account to each person
# 3. Keep your software up to date
# 4. Lock your screen while away
# 5. Set up a firewall
# 6. Avoid Internet nuisances and crime
# 7. Make backup copies of your files
Fix Missing Network Manager In Ubuntu 10.04
Posted On July 24, 2010 at 23:02 in How2, Ubuntu
Problem
Missing Network Manager ‘Applet’ in Ubuntu 10.04 LTS
Solutions
Method 1
Open the terminal type “sudo edit /etc/NetworkManager/nm-system-settings.conf”
change the “managed=false” to “managed=true” and then save it.
then in the terminal type “killall nm-system-settings”
and then reboot.
Method 2
right click panel>add to panel>Notification Area
Bug reported here
Source from here
Ubuntu 10.04 LTS “Command Line Install”
Posted On July 20, 2010 at 08:52 in How2, Ubuntu
Intro
To install Ubuntu, at least 384 Megabytes of memory are required. However, it is possible to install Ubuntu on a PC with only 128 MB of RAM, with a full Gnome desktop.
Here’s how…
Prerequisites
* A PC with 128 MB of memory or more.
* A CD-Rom drive
* 3 Gb of free space on hard drive.
* An Ethernet card recognized by Ubuntu
* Internet connection (preferably Ethernet).
The Internet connection is necessary because the installation is done via the network. Download and burn the installation CD of Ubuntu (MinimalCD): here.
This ISO image (13 MB) allows installation of Ubuntu directly via the internet.
Installation
* Boot from the minimal CD and choose “Command-line install”.
* Proceed with the installation of the system. At the end of the installation, after rebooting, you get a text mode.
* Login with the username and password you chose during installation.
(Plymouth errors can be ignored.)
Installing core packages
Then, install the base packages below to get a graphical desktop (Gnome).
sudo apt-get install gnome-core gdm gnome-system-tools network-manager-gnome human-theme x11-xserver-utils tangerine-icon-theme gnome-themes-ubuntu gnome-themes-selected ubuntu-artwork jockey-gtk gnome-screensaver xcursor-themes gnome-utils file-roller
(Note: It is possible to have an lighter GUI with JWM or IceWM , but you lose the benefits of the Gnome/Ubuntu integration.)
Reboot: (sudo reboot): You can now login to your GUI.
You may get a popup error about “FastUserSwitchApplet”: Just click the “Remove” button.
Installing additional software
When choosing software, it is recommended to avoid heavy ones such as OpenOffice.org.
Here are some recommended packages for a basic system:
sudo apt-get install gcalctool brasero chromium-browser abiword gnumeric vlc p7zip-full ubuntu-restricted-extras
Details:
* Chromium : Chromium is lighter than the Firefox browser and based on Webkit (like Chrome or Safari).
* gcalctool, a calculator.
* brasero : CD/DVD burning application.
* abiword is a word processor lighter OpenOffice.org Writer.
* gnumeric spreadsheet is a good alternative to OpenOffice.org Calc.
* VLC is a media player (audio/video) that can play almost any format.
* p7zip-full can read many different archive formats (cab, rar …)
* ubuntu-restricted-extras: Flash plugin, Java, codecs, Microsoft TrueType fonts, etc..
* The system is already provided with Evince, a PDF reader.
You are with a basic system for surfing the internet and perform office duties.
Thanks to Seb-Sauvage for this tip.
How2 Reset Your Windows Password Using Ubuntu
Posted On July 8, 2010 at 07:00 in How2, Microsoft, Ubuntu
To reset your Windows password is very easy, as easy as resetting your Ubuntu password. What you need is bootable Ubuntu system (ie. USB, CD or anything) and software called chntpw.
This is step-by-step to reset your Windows password:
- Boot from your bootable device (Ubuntu Live Session)
- Set your repository
- Install CHNTPW
- Resetting Windows password
- Mount your “Windows installed” device
It’s depending on your system, example:
sudo mkdir /media/WINDOWS sudo mount /dev/sda1 /media/WINDOWS
On my system Windows installed on
/dev/sda1and I want to mount it to/media/WINDOWSthat I’ve created before. - Goto your Windows system configuration folder
- Cracking the SAM file
Shutdown your computer and boot up using your bootable system. So you run Ubuntu on Live Session that means you run your system without install it!
Goto Synaptic Package Manager -> Settings -> Repositories -> Ubuntu Software and check the “Software restricted by copyright or legal issues
” checkbox. And don’t forget to reload synaptic.
Install from Synaptic Package Manager or use this command on shell:
sudo apt-get install chntpw
Located at [WINDOWS_DEVICE]/WINDOWS/system32/config/:
cd /media/WINDOWS/WINDOWS/system32/config/
There a SAM file on Windows system configuration folder. That’s the file we’re looking for. Let’s crack it 
(sounds cool)
chntpw SAM
And if you see the output similar with image below, it’s mean you can crack the SAM file.
As you see, there is 5 choices. Just type “1″ and press “ENTER” to reset your password. –Done.
MACchanger | Utility For Manipulating The MAC Address Of Network Interfaces, Included GUI Utility
Posted On July 1, 2010 at 14:13 in How2, Ubuntu, Ubuntu Srvr
A GNU/Linux utility for viewing/manipulating the MAC address of network interfaces
Features
* Set specific MAC address of a network interface
* Set the MAC randomly
* Set a MAC of another vendor
* Set another MAC of the same vendor
* Set a MAC of the same kind (eg: wireless card)
* Display a vendor MAC list (today, 6800 items) to choose from
Possible usages
These are some examples:
* You’re in a DHCP network with some kind of IP-based restriction
* You’ve a cluster that boot with BOOTP and you want to have a clean set of MACs
* Debug MAC based routes
Install macchanger in Ubuntu
sudo apt-get install macchanger macchanger-gtk
Command line Examples
# macchanger eth1
Current MAC: 00:40:96:43:ef:9c [wireless] (Cisco/Aironet 4800/340)
Faked MAC: 00:40:96:43:ef:9d [wireless] (Cisco/Aironet 4800/340)
# macchanger –endding eth1
Current MAC: 00:40:96:43:e8:ec [wireless] (Cisco/Aironet 4800/340)
Faked MAC: 00:40:96:6f:0f:f2 [wireless] (Cisco/Aironet 4800/340)
# macchanger –another eth1
Current MAC: 00:40:96:43:87:1f [wireless] (Cisco/Aironet 4800/340)
Faked MAC: 00:02:2d:ec:00:6f [wireless] (Lucent Wavelan IEEE)
# macchanger -A eth1
Current MAC: 00:40:96:43:39:a6 [wireless] (Cisco/Aironet 4800/340)
Faked MAC: 00:10:5a:1e:06:93 (3Com, Fast Etherlink XL in a Gateway)
# macchanger -r eth1
Current MAC: 00:40:96:43:f1:fc [wireless] (Cisco/Aironet 4800/340)
Faked MAC: 6b:fd:10:37:d2:34 (unknown)
# macchanger –mac=01:23:45:67:89:AB eth1
Current MAC: 00:40:96:43:87:65 [wireless] (Cisco/Aironet 4800/340)
Faked MAC: 01:23:45:67:89:ab (unknown)
# ./macchanger –list=Cray
Misc MACs:
Num MAC Vendor
— — ——
065 – 00:00:7d – Cray Research Superservers,Inc
068 – 00:00:80 – Cray Communications (formerly Dowty Network Services)
317 – 00:40:a6 – Cray Research Inc.
Macchanger GUI
You can open the gui by running the following command from your terminal
$ macchanger-gtk
Screenshot
View Log Files In Ubuntu & Ubuntu Server Via The CLI
Posted On June 15, 2010 at 08:46 in How2, Ubuntu, Ubuntu Srvr
View log files in Ubuntu via the Command-Line Interface.
Q. Could you please explain to me log files in Ubuntu Linux and how do I view logs?
A. All logs are stored in /var/log directory under Ubuntu (and other Linux distro).
To view log files at shell prompt
Use tail, more, less and grep command.
tail -f /var/log/apport.log
more /var/log/xorg.0.log
cat /var/log/mysql.err
less /var/log/messages
grep -i fail /var/log/boot
Linux Log files and usage
=> /var/log/messages : General log messages
=> /var/log/boot : System boot log
=> /var/log/debug : Debugging log messages
=> /var/log/auth.log : User login and authentication logs
=> /var/log/daemon.log : Running services such as squid, ntpd and others log message to this file
=> /var/log/dmesg : Linux kernel ring buffer log
=> /var/log/dpkg.log : All binary package log includes package installation and other information
=> /var/log/faillog : User failed login log file
=> /var/log/kern.log : Kernel log file
=> /var/log/lpr.log : Printer log file
=> /var/log/mail.* : All mail server message log files
=> /var/log/mysql.* : MySQL server log file
=> /var/log/user.log : All userlevel logs
=> /var/log/xorg.0.log : X.org log file
=> /var/log/apache2/* : Apache web server log files directory
=> /var/log/lighttpd/* : Lighttpd web server log files directory
=> /var/log/fsck/* : fsck command log
=> /var/log/apport.log : Application crash report / log file
A Complete Beginner’s Manual For Ubuntu 10.04
Posted On June 14, 2010 at 15:04 in How2, Ubuntu
This guide is designed to be as user-friendly and easy to follow as possible, it should provide the first point of reference to any Ubuntu newcomer with lots of information. The manual has step by step instructions and includes lots of screenshots to show you how to do tasks. It also includes a Troubleshooting section to help you solve common Ubuntu problems quickly. Download this 160+ page Lucid Lynx manual today.
Pine: “Alternate Speller Terminated Abnormally (-1)”
Posted On May 21, 2010 at 07:24 in How2, Ubuntu, Ubuntu Srvr
To all,
Problem: While trying to perform a spell check in Alpine. I get a(n) “alternate speller terminated abnormally (-1)” message?
Solution: Make sure there is at least one aspell dictionary loaded/installed. Look to see if you have the aspell-en (apt-get install aspell-en) package installed; my bets are that you don’t.