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tiny-shell's Introduction

Tiny Shell

By Akash Gajjar

Requirements

Knowledge of c programming, linux commandline and linux processes is required to understand this piece of code.

Brief Intro

This is a part of an assignment in my course of System Software. This is a look alike shell program and it has a limited functionality. It is an easy project if you follow getting started pdf.

Files

  • Makefile - Compiles your shell program and runs the tests
  • README.md - This file
  • tsh.c - The heart of this whole project
  • tshref - The reference shell binary.

Wraping the head around

  • run make test<testnumber> to run tests on tsh which are specified in the trace files
  • run make rtest<testnumber> to compare the tsh output with tshref (which is the reference shell)

Screenshots

test1

The files that are used to test shell

  • sdriver.pl # The trace-driven shell driver
  • trace*.txt # The 15 trace files that control the shell driver

Little C programs that are called by the trace files

  • myspin.c - Takes argument n and spins for n seconds
  • mysplit.c - Forks a child that spins for n seconds
  • mystop.c - Spins for n seconds and sends SIGTSTP to itself
  • myint.c - Spins for n seconds and sends SIGINT to itself

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