Terminal is the command line interface (CLI) in Ubuntu that lets you type code to instruct your computer what to do. This is a faster and more powerful way to configure your computer running Ubuntu, but it requires finding out what the commands are.
Below is a list of important Ubuntu codes that you can use in Terminal:
Movement In The Directory
* cd - Change Directory
* pwd - Print Working Directory
Managing Files and Text
* cp - Copy
* ls - List
* mkdir - Make Directory
* mv - Move
* rm - Remove
* grep - Search for Text Strings
* head - Display Start of File
* less - Display Part of File
* more - Display Part of File
* tail - View the End of a File
Managing System and Program Information
* cal - Calendar
* date - Date
Troubleshooting
* fsck - File System Check
Managing Network Connections
* chkconfig - Check Activated Services
* ping - Test Network Connections
* ftp - file Transfer Protocol
* host - Check IP of Domain
* ifconfig - Configure Network Devices
* netstat - Display Routing Table
* route - Set Routes
* telnet - Connect to telnet
* traceroute - Display Route
Manage Drives and Formats
* mount - Mount a Drive
* umount - Unmount Drive
* fdisk - Format Disk
* dd - Dupliate Disk
* df - Disk Free Space
Managing Rights to Files and Directories
* chmod - Change Mode
* su - Switch User
Managing Users and Groups
* passwd - Create Password
* groupadd - Add a Group
* groupmod - Modify a Group
* chgrp - Change Group
* groupdel - Delete Group
* sudo command – Executing Commands with Elevated Privileges (Only users with administrative privileges can use this command line)
* apt-get - used to install, remove, upgrade and more.
* file - type checking of one or more files
* sleep - wait x seconds until continue with the next command
* pidof - get pid in an useful format
* ps - the ultimate system monitor for command line - also good for scripts
* cat - print out a file in the command line
* crontab - time-driven events
* man - open the manual of programms - the most important command
This tutorial will teach you how to temporarily prevent your computer from activating the screensaver and/or the "sleep" power saving feature of Ubuntu.
Open your terminal and type the following commands:
If you don't like the idea of your notebook becoming a tablet (or rather, having to pay extra for that option), laptops like the Acer Aspire S7 that still retain the traditional clamshell form factor.
Since Acer introduced the impressive but slightly handicapped S5 (thanks to a low screen resolution), the S7 is a strong move towards the better with its premium looks and its Full HD multi-touch display. As an Ultrabook, the S7's design is simply stunning.
This is also the first Acer machine that completely removes the “cheap”feeling often associated with the brand. Despite being mostly made of plastic, the S7 feels robust and well-built, thanks in part to a Gorilla Glass-protected lid. There's no official reason as to why the S7 has Gorilla Glass on the back of the lid, other than for aesthetic purposed; presumably the toughened glass is there to protect from scratches and the like. We do like that the display is able to open up quite a fair distance (over 180 degrees).
Besides gorgeous looks, adding on to the S7's premium status are quality components like a Full HD (1920 x 1080 pixel resolution) display – quite rare for a 13.3-inch laptop – as well as an SSD, a component often found in top-of-the-line Ultrabooks.
Despite its premium positioning though, the battery capacity of the S7 is quite small, taking an unfortunate side effect of having such a thin and light body, tipping the scales at just 1.3kg. Even though it's easy to carry around, lasting just over two hours in our battery test means you'll need to be parked near a power outlet more often than not, when away from the office.
And because of its incredibly thin frame, the chiclet-style keys on the S7's keyboard are extremely shallow. Fortunately, the keys have plenty of bounce, which gives users the feedback needed to type fast. Like all premium Ultrabooks, the Aspire S7 also has a reasonably - sized click pad, though we did wish it was a little bigger.
While there were some compromised made due to its thickness (or lack thereof), there might be some willing to trade battery life for an exquisitely designed machine that is likely to be one of the thinnest and lightest Ultrabooks on the market to date.
With Windows Phone, Android iOS operating systems constantly evolving, both in visual and experience, the Company formerly knows as RIM seemed very much like the odd one out, with its low-powered QWERTY devices and antiquated OS design.
Of course, BlackBerry hasn't quite thrown in the towel just yet, despite rapidly losing market share in prominent markets like North America. For one, its 2011 efforts to secure a place in the tablet world with the PlayBook, a tablet device that showcased a new touch-friendly OS, were valiant but unfortunately, not quite successful.
In the same year in October, BlackBerry (then still known as RIM) officially introduces their next-generation platform. Previously knows as BBX, the platform changed name to BlackBerry 10 (or BB10 for short), due to a trademark dispute with the New Mexico-based software company called Basis platform combining BlackBerry's existing native framework (BlackBerry smartphone OS, QNX) and open-source HTLM5 technology, while retaining its enterprise, NOC and cloud services. Moving forward, BB10 devices were to brandish higher resolution screens with various form factors and layouts. More importantly, the operating system would lay the groundwork for optimal multi-core migration and threading.
However, that meant that BlackBerry had to work from scratch to overhaul their existing OS platform and its interface and app ecosystem. Unsurprisingly, the tech world wasn't caught too off=-guard when the launch of these BB10 devices was repeatedly delays, all the way from forecast 2012 dates, to an eventual Q1 2013 release. Thankfully, that wait has finally come to an end.
Flow, Peek and Hub
To meet the current needs of a constantly evolving smartphone climate, BB10 places emphasis on creating a visually pleasing user interface, a major shift from its traditionally text-heavy user interface. The OS also strives to conform to a natural experience – hence all physical navigation buttons have been stripped down, resulting in a gesture-heavy design.
The BB10 experience can be summarized in three words: Flow, Peek and Hub. Content should “flow” continuously, with users always able to “peek” at ongoing activity and notifications, with the most important bits of information centralized in a “hub”.
Highlights of BlackBerry 10
Flow
Smartphones are no longer just devices for messaging and calling – in this era they are used for a myriad of tasks, such as note-taking, surfing the web and editing photos. To make BB10 more “mobile computing” friendly, recently closed apps are laid out in widget style on the home screen for easy viewing and re-opening. Up to eight apps can be displayed, with the top left spot reserved for the most recent used app.
Peek & BlackBerry Hub
The BB10 OS has no notification bar per se, allowing apps to display full screen on the BB10 devices. However it does have a gesture called Peek, which essentially allows users to see notifications from anywhere on BlackBerry 10 by simply swiping up from the bottom of the device. That's not all – if you continue this gesture by swiping to the right, you will reach the BlackBerry Hub, the main hive activity and communications on the devices. This is Blackberry's version of Windows Phone 8's People Hub and in here, you get all your connections in one place, be it your emails, contacts, Facebook, LinkedIn or Twitter.
Keyboard
BlackBerry made their name on physical QWERTY keyboards, and despite the transition to a touch-friendly user interface, it still strives to provide the best and most accurate typing experience. On BB10, the keyboard engine dynamically learns your typing habits and word occurrence, based on your usage and thumb size to offer precise suggestion. Instead of being displayed in the bar above your keyboard, these suggestions hover above the next later in the “predicted” word. Simply flick up to get your chosen suggestion typed out.
Camera
The camera software of BB10 gets some interesting features such as Face Detection, and an especially nifty one called Time Shift. This feature automatically (and in the background) records a few seconds worth of still images before and after you actually take the shot. Once the camera detects a face in the photo, you can zoom in and cycle through the shots by moving your finger around the dial. Select your photo by tapping on the face once again; great for getting shots commonly plagued by half-closed eyelids and the like.
Proprietary Apps
BlackBerry Story Maker
The introduction of BlackBerry-flavored apps have also been added to the BB10 lineup, including BlackBerry Remember, a note-taking app that's similar to Evernote and is integrated with your Evernote account, and BlackBerry Story Maker, an app that allows your to create a full-pledge slide shows with music, photos and videos.
Google Glass is Google's state-of-the-art electronic eye wear, one that allows users to live-stream audio or images, as well as performing basic computing tasks. To be exact, it consists of a minute electronic screen mounted on the left side of a pair of eyeglass frames. To demonstrate the device's capabilities, Google handed out pairs of Google Glasses to appointed skydivers - subsequently, a video of the skydiving stunts was streamed live to the audience, with US-based software developers allowed to purchase it at $1,500USD per unit during the conference. Google expects to roll out a consumer version of its electronic eye wear in less than two years and will price it significantly lower than the current price.
Not wanting to be part of the separatist group who have introduced tablets that pop in and out of a keyboard dock, Sony has taken the sliding pat down Middle Earth - the region where they are neither ultrabooks nor all-out slates.
The 11.6-inch display can be lifted and slid into place to reveal a rather narrow QWERTY keyboard. Unlike hybrids that are powered by Intel Atom chips, this one is endowed with a third generation Core i5. Apart from this, the hardware configuration is respectable with 4GB RAM and 128GB solid slate storage. The main draw of the DUO 11 is the screen and the convertible nature of the system. The full HD resolution on this bright IPS LCD screen is a huge plus but makes browsing with the touchscreen tad bit difficult, what with smaller text and icons.
In tablet mode, it feels quite unwieldy even though it is made to be edgy for better handling. At 1.3kg, it can cause strain. Switching orientation seemed a bit laggy and wouldn't change when going from portrait in tab to landscape in laptop mode. The whole unit had to be tilted to make the screen flip back down. As an ultrabook the shrunken keyboard and cramped keys proved to be a challenge to use. It took us quite a while to get used to it. Al least the optical pointing device was useful.
Battery seemed to ebb faster than other hybrids we have reviewed. This one just about managed a 9 to 5 day, if you don't make it sweat it out on entertainment. The positive takeaways are that it can be hooked to an optional secondary battery, has a lovely screen, a back-lit keyboard, reasonable grunt and connectivity options on offer as an ultrabook. If this design is to your liking then consider it for the long haul.
Sense of déjà vu? Yes, there's already been an Xperia S phone, and a Tablet S. But this is the Xperia Tablet S.
Like Sony's last tab it's got a cheese wedge shape, but now slimmed for greater portability, with added "splashproof" technology - or "sockets with caps over them" if you prefer.
The processor is now a powerful 1.4GHz Tegra 3, making it one of the more responsive Android tabs around, though the web browser still stutters.
The 9.4-inch screen's 1280x800 resolution, while adequate, pales in caparison to the iPad with Retina Display or the cheaper Nexus 10's 2560x1600 screen. Furthermore, you're limited to Android 4.0 - and Sony doesn't have a great track record for swift Android OS upgrades. The Nexus 10 comes with version 4.2 pre-loaded.
The Xperia Tablet S remains a classy number, with all Sony's media extras adding value. However, like a lot of Android tablets, this attractive, competent device suddenly appears fatally overpriced when compared to the Google Nexus and Amazon Kindle Fire device line.
