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  Introduction to Linux Shell
  Add Date : 2018-11-21      
  Linux Shell system offers a variety to choose from, Linux default Shell is the Bourne Again Shell (referred to bash). Linux terminals (Terminals) is a way of using the Shell.

Shell is a command interpreter that interprets commands entered by the user and send them to the core. Moreover, Shell has its own programming language used on the command editor, which allows users to program the shell command thereof. Shell programming languages ​​have many features common programming languages, such as it also has a cyclic structure and branching control structure, with this programming language Shell programs and other applications that have the same effect.

When the ordinary user successfully logs in, the system will perform a program called the shell. It provides a process shell command prompt: for ordinary users with the "$" as a prompt for the superuser (root) with the "#" as a prompt.

Once the shell prompt, you can type the command name and command parameters required. shell will execute these commands. If a command takes a long time to run, or on the screen to produce a lot of output from the keyboard, press ctrl + c interrupt signal to interrupt it (before the normal end of the suspension of its execution).
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