giovaneiwamoto/unix-utilities

🐧 Unix Utilities - Simple versions of commonly used commands as CAT, GREP, ZIP and UNZIP. Each utility is implemented as a separate C program, reflecting the core operations of these commands.

UNIX UTILITIES

INTRODUCTION

A few different UNIX utilities, simple versions of commonly used commands like cat, grep, zip, unzip. While the project focuses on writing simple C programs, it also necessitates a foundational knowledge of several other concepts. These include understanding what a command interpreter is and how to use the command line in UNIX-based systems, proficiency in using an editor like Emacs, and a basic grasp of C programming.

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OVERVIEW

Note

The project includes the development of several individual .c files, each corresponding to a specific utility: wcat.c, wgrep.c, wzip.c, and wunzip.c.

These utilities emulate the functionality of the traditional UNIX commands cat, grep, zip, and unzip. The cat command is used for concatenating and displaying file contents, grep for searching text using patterns, zip for compressing files, and unzip for decompressing them. Each utility is implemented as a separate C program, reflecting the core operations of these commonly used UNIX commands.

Important

The programs are designed to compile with strict flags (-Wall and -Werror), ensuring code quality and robustness. By adhering to these stringent compilation standards, the project aims to provide a practical understanding of UNIX utility implementation, fostering proficiency in both C programming and UNIX system operations.

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INSTALLATION GUIDE

Open a terminal and navigate to the directory where the Makefile is located. Run the command $ make all to compile all programs. This will create four executable files: wcat, wgrep, wzip, and wunzip.

Run the wcat program `$ ./wcat [filename]`, where filename is the name of the file you want to read.

Run the wgrep program `$ ./wgrep [search_term] [filename]`, where search_term is the term you want to search for and filename is the name of the file.

Run the wzip program `$ ./wzip [filename]`, where filename is the name of the file you want to compress.

Run the wunzip program `$ ./wunzip [filename]`, where filename is the name of the file you want to decompress.

Tip

To remove all executable files and clean up the directory, run the command make clean. This will delete all the compiled binaries, ensuring that the directory is returned to its original state, free of any generated executable files.

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OBJECTIVES

The primary objectives of this project are to become familiar with the UNIX terminal, shell, and command line, to learn how to use a suitable code editor such as Emacs, and to gain an understanding of the basic implementation of UNIX utilities.

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AUTHOR

• Giovane Hashinokuti Iwamoto - Computer Science student at UFMS - Brazil - MS

I am always open to receiving constructive criticism and suggestions for improvement in my developed code. I believe that feedback is an essential part of the learning and growth process, and I am eager to learn from others and make my code the best it can be. Whether it's a minor tweak or a major overhaul, I am willing to consider all suggestions and implement the changes that will benefit my code and its users.