Hello Everyone in this post i want to tell you about some command which implemented in Ubuntu terminal. Terminal is very useful tool in Linux OS. Many people prefer to use
Terminal to download packages and programs above Ubuntu Software Center
or Synaptic Package Manager. It's a little hard for beginners to
understand the Terminal, but once you learn the commands, it's easy. Lert's Started1. w3m
W3M is a terminal web browser for Linux. It’s got a few tricks up its
sleeve, including support for images, tabs, tables, frames and other
features not usually included with terminal web browsers.
If you’ve used Linux for a while, you probably remember using a
terminal browser to Google up a solution for your hardware when the X
server refused to load. Modern X servers have advanced far beyond this,
but W3M and other terminal browsers can still be useful.
Installing W3M
W3M isn’t included by default on most Linux distributions. You’ll want to install the main w3m package and the w3m-img package if you want inline image support. Use the following command on Ubuntu:
sudo apt-get install w3m w3m-img
Basic Browsing
W3M has quite a few command-line options, but none are mandatory. The
only thing you need to specify is a web page address. Want to bring up
Google? Just use the w3m google.com command.
You can use the arrow keys to move the cursor around or click at a
desired location to move the cursor there. If you want to type in a text
box, select the text box with your cursor and press Enter before typing
your text. W3M treats your keystrokes as commands if you just start
typing.
Load a hyperlink by selecting it with your cursor and pressing Enter.
You don’t have to select hyperlinks manually — press the Tab key to
position your cursor over the next hyperlink on the page.
Shift-B will take you back a page. If you want to load a different URL, press Shift-U and you’ll get an URL prompt. Press Shift-H to view the help page if you want to see a more complete list of keyboard shortcuts.
Images in the Terminal
W3M supports images, so where are they? Well, terminals like GNOME
Terminal and KDE’s Konsole can’t display W3M’s images. Other terminals,
such as Xterm, can. W3M will also display images if you’re running it in
a framebuffer console, so you don’t need an X server running to take
advantage of this feature.
Another feature that doesn’t work in GNOME Terminal or Konsole is W3M’s right-click menu.
Browser Tabs
How did we ever live without tabs? They’re an essential feature for
desktop web browsers. W3M includes tabs, too. Just press Shift-T to open
a new tab.
You can switch between tabs by clicking them, but we’re trying to be terminal ninjas here. Use the { and } keys to switch between tabs without touching your mouse (that’s Shift-[ and Shift-]).
Gmail in the Terminal
W3M isn’t stuck in the past, like Lynx (another web browser for the
terminal) is. It can render tables, frames and even has support for
Gmail’s basic HTML interface.
You’d probably feel more comfortable accessing Gmail with an IMAP client from your terminal, but hey — it works.
2.Wget
NAME
Wget - The non-interactive network downloader.
SYNOPSIS
wget [option]... [URL]...
DESCRIPTION
GNU Wget is a free utility for non-interactive download of files from
the Web. It supports HTTP, HTTPS, and FTP protocols, as well as
retrieval through HTTP proxies.
Wget is non-interactive, meaning that it can work in the background,
while the user is not logged on. This allows you to start a retrieval
and disconnect from the system, letting Wget finish the work. By con‐
trast, most of the Web browsers require constant user’s presence, which
can be a great hindrance when transferring a lot of data.
Wget can follow links in HTML and XHTML pages and create local versions
of remote web sites, fully recreating the directory structure of the
original site. This is sometimes referred to as ‘‘recursive download‐
ing.’’ While doing that, Wget respects the Robot Exclusion Standard
(/robots.txt). Wget can be instructed to convert the links in down‐
loaded HTML files to the local files for offline viewing.
Wget has been designed for robustness over slow or unstable network
connections; if a download fails due to a network problem, it will keep
retrying until the whole file has been retrieved. If the server sup‐
ports regetting, it will instruct the server to continue the download
from where it left off.
3. SSH
NAME
ssh - OpenSSH SSH client (remote login program)
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