Operating Systems (1) - Final Project

In the final project for the Operating Systems course at Damascus University, fourth year, we were given some tasks that we have to solve using Bash. They cover different aspects of shell scripting such as manipulating text files, registering cronjobs, and parsing arguments.

Overview

The project consists of 5 questions:

1. Interaction with text files:

We have to interact with a simple text file database (key-value pair) using operations that will be described below:

• Adding a record
• Updating a record
• Removing a record
• Searching for a record in the database using its key

Values are saved in the DB in base64 format.

2. Backing up / Restoring / Enabling automatic backups for the database in question 1
3. Monitoring a system's performance
4. Setting up a simple FTP server for downloading/uploading
5. A wrapper around find with a caching layer

Requirements

• (4th question): lftp (sudo apt install lftp), zip (sudo apt install zip)
• (5th question): cacheme script (found in the root of the project) to be included in your $PATH

Code

Naming Conventions

Please try to follow this guideline to ensure consistency across the codebase:

• snake_case for function names
• UPPERCASE for variables
• Append functions with the function keyword
• Utility functions in utils.bash should all be prefixed with __ to avoid namespace collisions

Collaborators

• Hasan Mothaffar
• Redwan Alloush