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

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