“The nc (netcat) command is used for any kind of TCP connections between two hosts. The pv (progress viewer) command is used to display the progress of the transfer. tar is used to archive the files on the source machine and un-archive them on the destination.”
“All servers can be pre-loaded with Microsoft Windows Server 2003, Windows Server 2008, or Novell’s SUSE Linux Enterprise Server (SLES) 10, Lenovo’s “preferred Linux operating system provider”
“In many cases, the sellers claim the phone is unlocked, some officially. “It is unlocked officially through T-Mobile. The[y] provided me with the unlock code,” one US seller wrote on their eBay page, while an Australian vendor said: “The phone is T-Mobile branded but UNLOCKED with use of turbo-sim card, and can be used with the Australian networks (excluding 3G) including Vodafone, Virgin Mobile, Optus and Telstra.”
Want to give your Gmail a whole new look? Check this out:
Gmail progress bar:
Try out the Firefox addon from here:
“Debian Lenny comes with Iceweasel 3.0.3, which is actually Firefox with a changed name and a few minor changes. If you have Iceweasel 3.0.3 installed but want to test this new beta without changing anything to your system, just follow the steps below.
Download Firefox 3.1 Beta 1 Get the Firefox .tar.bz2 archive from here, then uncompress it using:
tar -xjf firefox-3.1b1.tar.bz2
Next, move the firefox directory wherever you want it, for example in your home directory, or in ~/apps etc.”
“Last month we looked at the much-improved version of BulletProofX, which provides several end-user options when the X Server fails to start properly instead of just dropping them to a terminal. On top of this Canonical improvement in Ubuntu 8.10 “Intrepid Ibex” there is the USB startup disk creator as well as a System Cleanser application. While the System Cleanser isn’t the focus of this article, the system-cleaner-gtk program will simply show the user what Debian packages have been installed following the installation of Ubuntu. The focus of this USB start-up disk creator is to take a Linux CD or ISO image and convert it to run off a USB disk drive. This application, which is named usb-creator, is also able to setup the USB drive to offer persistent storage capabilities.”
“It is possible to install the web based system management tool without the GUI. This method will allow you to use those tools locally on the server without using a separate computer on the network.
“Tools to be installed are a lightweight window manager, a method of locking the screen, web based system management software, web browser and a light weight file manager.
“Installation of Fluxbox
“Fluxbox is a resource light window manager that will work well for simple system administration. Tip: I get tired of typing ‘sudo’ for every command, so we will remain as root, as the first command shows. To install Fluxbox and the display manager perform the following commands:”
“For the Intrepid Ibex, the development team will prepare an unbelievable desktop, with amazing performance, that will work on mostly any computer (be it a high-end workstation or an old and dusty Pentium III machine). Another major feature planned for Ubuntu 8.10 is the ability to be connected to the Internet (wireless connections) wherever you go. “We want you to be able to move from the office, to the train, and home, staying connected all the way,” said Mark Shuttleworth.
“In this release candidate, the development team introduces two new tools, the first one being System Cleaner (system-cleaner-gtk), which allows you to find and remove packages that are old or not supported by Ubuntu from the system. System Cleaner can also find different problems on the machine, such as wrong entries in /etc/fstab. The second tool is called “Create a USB startup disk” and it allows you to create a bootable USB stick in case you want to install Ubuntu from USB.”
The heading is self-explanatory. Linux Terminal seems dump but nothing is more clever than it. Linux is powerful and fun. When it is about something’s strength remember what Uncle Ben said.
When you are new to Linux you often seek to get help from others and almost most of the advices you get will be in the form of some commands such as
ps, top, modprobe, lspci etc. Be careful when you run these commands as some Anti-Linux a**holes try to fool new Linux users in the name of tips and tutorials. If after following such command(s), you lose all your files, no one is to be blamed but you.
If you want save yourself, here is one principle: Be aware of what you are doing! Just don’t do what someone suggest you. Fireup man page, look what the command is about. This way you can learn a couple of more options too. If you are in doubt about the commands, go to a couple of forums and put all information you have such as: Hello I was trying to do this, and a guy from forum.xyz.com suggest me to issue this command. I suspect this is a harmful command. Any suggestions? Take my words, Linux carries a strong spirit with it – spirit to share knowledge. And you will get some good explanatory suggestions very quickly. If you are still in doubt, I suggest you to issue the commands inside virtual OS:
Last thing first. Today I will be posting some harmful Linux commands. DO NOT ISSUE THESE COMMANDS! These commands are just for your information. These commands are not made for making harm to your computer, but with a couple of options it can be very dangerous. After all Linux doesn’t know that a folder inside your home directory contains your first girlfriend’s picture! It is your duty to ensure they are safe. Let’s get started. I repeat DON’T ISSUE THESE COMMANDS. If you want to test, I suggest you to run them inside a virtual Linux OS.
1. The king of all devils:
rm -rf /
Q. What does rm do?
A. Removes a file
Q. What is r?
A. Recursion. That means inside a folder, of a folder, of a folder and so on
Q. what is f?
A. Force. It means you are saying to the command “Never ask me anything. Just do what you want to do”
Q. What is /
A. Your ROOT directory!
See what it does? Recursively removes all the files inside your root directory without nagging you – “Should I delete this?”
There are various versions of rm available such as:
rm -rf .
rm -rf *
Not only someone from outside, you yourself can screw up things sometimes. Little knowledge is dangerous! How about this – you want to delete all the hidden files inside a directory. That’s easy right? Hidden files are denoted with . in front so you might be thinking this command
rm - .* Nooooooooooo!!! It will delete all the files one level up of the current directory.
2. How about backing up your home directory or some folders? Never try to do anything such as:
mv /home/yourhomedirectory/* /dev/null
Q. What is mv?
A. Move files
Q. What is dev/null?
A. Null means nothing. In other words, it is a black-hole.
If you issue above command, it will move all the files inside your home directory to a blackhole.
3. Linux Terminal is not a toy to play, it’s something to learn and do some productive things. I just mean to warn you don’t type anything silly and hit enter such as this:
Those seem like emoticons but they are actually shell programming stuffs and have special meaning. The above command executes different process freezing your computer and you will get a BSOD, a sort of!
4. How about making a Linux filesystem?
You hard disk’s data are gone, and will never come back again. That was a poor farewell party for your documents.
5. Do you know eyes and your knowledge both can lie? Well sometimes. What do you see in the following C file written by someone claiming New sudo off-by-one poc exploit? Any sign of devil?
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