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skerl

skerl

In this project we have developed a basic, yet powerful shell --skerl for the unix/linux systems.

Getting Started

These instructions will get you a copy of the project and ready for use on your local unix/linux machine.

Prerequisites

The shell developed is target for unix/linux systems only.

Quick Access

  • Click on the link to download skerl - skerl.zip

  • Extract the zip folder

Release

  • You can download the latest release of skerl from here.

Developer Style

  • GNU GCC complier

  • Clone this repository using the command:

      git clone https://github.com/KrishnanSG/skerl.git
      cd skerl
    
  • Complie and create executable

      gcc skerl.c -o skerl.out
    

How to Use

You're almost there. The following steps will guide you on how to get start with skerl.

  1. Open your favourite terminal
  2. Starting skerl shell
         ./skerl.out
    
  3. Enjoy skerl 😀.

You may use the help command to get help regarding the shell

What can skerl do?

  • Parse and tokenize the given command
  • Execute any given program
  • Maintains history of all commands for quick access
  • Input redirection
eg: /home/user$ wc -l < story.txt
  • Output redirection
eg: /home/user$ ls > out.txt
/home/user$ ls >> out.txt	// append mode
  • Pipes
eg: /home/user$ cat story.txt | wc -l 
  • Execute process in background when suffixed with (&)
eg: /home/user$ program.o -arg1 -arg2 &
  • Provides stats on usage of shell. Try out the following internal commands.
globalusage
averageusage

How does this work?

This is a really interesting section as developer you would love to visit. Keeping this in mind we have provide a pretty detailed explaination.

The report we have created contains:

  • What is a shell?
  • Lifetime of a shell
  • Internal vs External commands
  • Implementation of skerl
  • Working of skerl
  • Conclusion

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