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diff --git a/help/C/overview.page b/help/C/overview.page new file mode 100644 index 0000000..ab5046e --- /dev/null +++ b/help/C/overview.page @@ -0,0 +1,101 @@ +<page xmlns="http://projectmallard.org/1.0/" + type="guide" style="task" + id="overview"> + <info> + <revision version="0.1" date="2013-01-10" status="draft"/> + <link type="guide" xref="index"/> + + <credit type="author copyright"> + <name>Sindhu S</name> + <email>sindhus@live.in</email> + <years>2013</years> + </credit> + <credit type="copyright editor"> + <name>Ekaterina Gerasimova</name> + <email>kittykat3756@gmail.com</email> + <years>2013</years> + </credit> + + <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/> + + <desc>What is a terminal?</desc> + </info> + + <title>Overview of a terminal</title> + + <p><app>Terminal</app> is a terminal program for <gui>GNOME</gui>. The + following terms and their descriptions will help you to be familiar with + <app>Terminal</app> and its capabilities.</p> + + <terms> + <item> + <title>A terminal</title> + <p>A terminal is a text input point in a computer that is also called + the Command Line Interface (CLI).</p> + </item> + <item> + <title>Physical terminals</title> + <p>IBM 3270, VT100 and many others are hardware terminals that are no + longer produced as physical devices. To emulate these terminals, there are + terminal emulators.</p> + </item> + <item> + <title>Terminal emulators</title> + <p>Emulation is the ability of a computer program to imitate another + program or device.</p> + + <p>A terminal emulator, also called tty, is a software program that emulates + a video terminal in modern computers that use graphical user interfaces + and provide interactive access to applications that run only in the + command line environments. These applications may be running either on the + same machine or on a different one via <app>telnet</app>, <app>ssh</app>, + or <app>dial-up</app>.</p> + </item> + <item> + <title>VTE</title> + <p>Virtual Terminal Environment (VTE) is a terminal emulator which + emulates a text terminal inside a graphical user interface (GUI) + environment. <app>Terminal</app> is largely based on the <app>VTE</app>. + <app>VTE</app> has widgets that implement a fully functional terminal + emulator.</p> + </item> + <item> + <title>Shell</title> + <p>A <em>shell</em> is a program that provides an interface to invoke or + “launch” commands or another program inside a terminal. It also allows you + to view and browse the contents of directories. Popular shells include + <app>bash</app>, <app>zsh</app>, <app>fish</app>.</p> + </item> + <item> + <title>Escape Sequences</title> + <p>An escape sequence is a series of characters used to change the meaning + of data in a terminal. Escape sequences are used when a computer has only + single channel to send information back and forth. Escape sequences are + used to distinguish if data being sent is a command to be executed or + information to be stored and displayed.</p> + </item> + + <item> + <title>Prompt</title> + <p>A prompt is also called a <em>command prompt</em>. It is a sequence of + characters used in the command line environment to indicate the readiness + of the shell to accept commands.</p> + + <p>A prompt usually ends with the characters <sys>$</sys>, <sys>%</sys>, + <sys>#</sys> or <sys>></sys> and includes + information about the path of the present working directory. On Unix based + systems, it is common for the prompt to end in a <sys>$</sys> or + <sys>#</sys> character depending on the user role such as <sys>$</sys> + for user and <sys>#</sys> for superuser (also called <sys>root</sys>). + </p> + </item> + <item> + <title>Command</title> + <p>An input entered in the prompt to be executed is called a + <em>command</em>. It is a combination of the program name along with any + other additional parameters passed as flags to alter the execution of the + program.</p> + </item> + </terms> + +</page> |