Bash Admin Scripts

Small Bash scripts for Linux system administration practice. This repository is focused on simple, readable scripts that support common entry-level IT tasks such as checking disk usage, reviewing logs, collecting system information, and creating basic reports.

Purpose

I am building practical command-line skills for entry-level IT support, Linux administration, and cybersecurity fundamentals. These scripts are written for learning, documentation, and lab use.

Skills demonstrated

• Bash scripting basics
• Linux command-line troubleshooting
• File and directory operations
• System information collection
• Log review workflows
• Clear script documentation
• Safe administrative habits
• Git version control

Repository structure

bash-admin-scripts/
├── README.md
├── scripts/
│   ├── disk-usage-check.sh
│   ├── system-inventory.sh
│   ├── failed-login-review.sh
│   ├── service-status-check.sh
│   ├── network-baseline.sh
│   ├── package-inventory.sh
│   └── backup-folder.sh
├── docs/
│   ├── script-usage.md
│   └── testing-notes.md
└── examples/
    └── sample-output.md

Planned scripts

disk-usage-check.sh

Checks disk usage and prints directories or files that may need review. This supports common support tasks where a user reports a full disk or slow system.

system-inventory.sh

Collects basic system details such as OS version, kernel version, uptime, disk usage, memory, and network interface information.

failed-login-review.sh

Reviews authentication logs in a lab environment to identify failed login attempts and summarize basic patterns.

service-status-check.sh

Checks whether selected services are active and prints a simple status report.

network-baseline.sh

Collects a basic network troubleshooting baseline, including IP addresses, routes, DNS test, IP connectivity test, and listening ports.

package-inventory.sh

Creates a basic package inventory for documentation and rebuild planning.

backup-folder.sh

Creates a timestamped backup of a selected folder for lab use. This script will include safety checks to avoid overwriting existing files.

Script standards

Each script should include:

• A short purpose statement
• Usage instructions
• Input validation where needed
• Comments explaining important commands
• Safe defaults
• Example output

Example script header

#!/usr/bin/env bash

# Purpose: Check disk usage and print a simple report.
# Usage: ./disk-usage-check.sh
# Notes: Intended for personal lab and learning use.

Testing approach

Before adding a script, I will test it in a personal Linux lab environment and document:

• What system it was tested on
• What command was run
• What output was expected
• Any limitations or assumptions

Career relevance

This repository supports applications for:

• IT Support Specialist
• Help Desk Technician
• Linux Support Technician
• NOC Technician
• Junior System Administrator
• Cybersecurity Intern

The goal is to show practical command-line ability and a willingness to automate repeatable support tasks.

Current certification status

I am currently studying for CompTIA Tech+ and plan to complete the exam by October 2026.

Safety note

These scripts are for lab use and learning. They should be reviewed before running on any production or work system.