Shell Scripts Playground 🚀

Welcome to my Shell Scripting repository! This is a curated, step-by-step collection of Bash scripts designed to cover everything from absolute core programming concepts to highly practical system administration, logging, and automation tasks.

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📂 Repository Roadmap & Structure

The repository is logically indexed so you can follow along with increasing levels of logic complexity:

1. Basic Concepts & Control Flows

• 01_basic.sh to 04_constant_var.sh – Getting started with execution, comments, variables, and read-only constants.
• 05_arrays.sh & 06_key-value.sh – Managing indexed arrays and associative (key-value) maps in Bash.
• 07_string_ops.sh & 08_user_int.sh – String formatting, manipulations, and capturing interactive user input.
• 09_arith_ops.sh – Performing mathematical and mathematical calculations.
• 10_if_else.sh to 14_ternary_op.sh – Conditional branching, nested elif, case statements, logical operations, and shorthand ternary structures.

2. Loops & File Processing

• 15_for_loop1.sh to 17_for_loop_with_array.sh – Iterating standard numbers, scanning physical files, and mapping arrays.
• 18_while_loop.sh to 21_infinite_for_loop.sh – Controlled iterations, conditional loop blocks, and handling infinite processes safely.
• 22_while_with_file.sh & 23_while_with_csv.sh – Stream-parsing plain files and data grids using structured inputs (test.csv).

3. Modularization & Runtime Arguments

• 24_functions.sh & 25_functions_with_args.sh – Encapsulating re-usable code blocks and parsing local parameters.
• 26_args.sh & 27_shift_args.sh – Processing global script flags and working with positional pointer adjustments via shift.
• 28_break_in_loop.sh to 30_exit.sh – Fine-tuning loop terminations, skipping cycles, and terminating script layers cleanly.

4. System Administration & Automation Utilities

• 31_internet_connection_check.sh – Network testing scripts logging pings to text tracks (ping.log).
• 32_basename_dirname_realpath.sh – Dynamic script execution path tracing.
• 33_file_exit_check.sh – Pre-execution dependency file validation.
• 34_dice_using_random.sh – Utilizing system random entropy channels.
• 35_root_usercheck.sh – Restricting execution scripts to sudo root contexts.
• 36_redirect.sh – Routing standard output/error paths to file streams (redirect.log).
• 38_logger.sh – Injecting custom text entries straight to system /var/log/syslog monitors.
• 39_debugging.sh – Code tracing diagnostics using set -x configurations.
• 40_running_task_background.sh & 41_running_script_on_schedule_basis.sh – Executing processes asynchronously via nohup (nohup.out) and mapping automated triggers with Linux crontab.

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🛠️ How to Execute These Scripts

1. Clone the repository:

   git clone https://github.com
   cd Shell-Scripts

2. Grant execution permissions: By default, newly cloned scripts might lack execute flags. Add them via:

   chmod +x 31_internet_connection_check.sh

3. Run the script:

   ./31_internet_connection_check.sh

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🧠 What I Learned

Through this project, I strengthened my understanding of:

• Safe stream redirection (>, >>, 2>&1)
• Data parsing across unstructured string data payloads and complex .csv datasets
• Automating backend maintenance procedures seamlessly using decoupled cron task managers
• Structuring resilient, human-readable terminal scripting paths

Feel free to star ⭐ the repository if you found these automation templates helpful!