Scripting

31 articles
Interview Preparation Advanced

Bash Projects

Five practical, portfolio-ready Bash projects that combine everything from this series — a server health checker, log analyzer, backup tool, …

Jan 20, 2026 Read more
Interview Preparation Advanced

Bash Security

Command injection risks, safe handling of secrets, quoting pitfalls that become vulnerabilities, and hardening scripts that run with …

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Interview Preparation Advanced

Production-Grade Bash

The patterns that separate a throwaway script from a production-grade one — structure, logging, idempotency, configuration, and testing.

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Interview Preparation Advanced

Bash + Kubernetes

Scripting Kubernetes operations with kubectl and Bash — deployment waits, rollout automation, log aggregation, and cluster audit scripts.

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Interview Preparation Advanced

Bash + Docker

Scripting Docker operations from Bash — container entrypoints, health-check waits, cleanup automation, and building images in CI.

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Interview Preparation Advanced

Bash + AWS CLI

Scripting AWS operations with the AWS CLI and jq — EC2 automation, S3 sync, tagging audits, and safe patterns for infrastructure scripts.

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Interview Preparation Advanced

Log Processing

Building Bash scripts that parse, filter, rotate, and alert on log files — combining text tools with loops and conditionals into real …

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Interview Preparation Advanced

SSH Automation

Running remote commands, copying files, and orchestrating multi-server tasks over SSH from Bash scripts, using keys instead of passwords.

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Interview Preparation Advanced

Networking Automation

Automating connectivity checks, port scans, and API calls from Bash using curl, nc, and the standard networking commands.

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Interview Preparation Advanced

Cron & Scheduling

Writing crontab schedules, and the environment/PATH pitfalls that make scripts behave differently under cron than in an interactive shell.

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Interview Preparation Advanced

Signals & Trap

Handling SIGTERM, SIGINT, and other signals in Bash scripts with trap, for graceful shutdown and guaranteed cleanup.

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Interview Preparation Advanced

Processes & Background Jobs

Running background jobs from a script, waiting for them, capturing their output, and running tasks in parallel with process control.

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Interview Preparation Intermediate

Debugging

Debugging Bash scripts with set -x, bashdb-style tracing, shellcheck, and practical techniques for finding the exact line that's failing.

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Interview Preparation Advanced

Exit Codes & Error Handling

Exit statuses, set -euo pipefail, trap, and building Bash scripts that fail loudly and safely instead of silently continuing after an error.

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Interview Preparation Intermediate

Text Processing

Using grep, sed, awk, and cut inside Bash scripts to parse logs, transform config files, and build reports.

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Interview Preparation Intermediate

Redirection & Pipes

stdin, stdout, stderr, file descriptors, redirection operators, pipes, and process substitution in Bash.

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Interview Preparation Intermediate

File Handling

Reading, writing, appending, checking, and looping over files in Bash — the everyday file-manipulation patterns used in real scripts.

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Interview Preparation Intermediate

Command-Line Arguments

Positional parameters, shift, getopts, and parsing both short (-e) and long (--environment) flags in Bash scripts.

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Interview Preparation Intermediate

Functions

Defining and calling Bash functions, passing arguments, return values vs exit codes, local scope, and recursion.

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Interview Preparation Intermediate

Arrays

Indexed and associative arrays in Bash — declaring, accessing, looping, slicing, and the quoting rules that matter.

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Interview Preparation Beginner

Loops

for, while, and until loops in Bash — iterating over lists, files, command output, and ranges, plus break and continue.

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Interview Preparation Beginner

Conditions

if/elif/else, case statements, and combining conditions in Bash for real decision-making logic in scripts.

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Interview Preparation Beginner

Operators

Arithmetic, comparison, logical, and file test operators in Bash — and the crucial difference between [ ], [[ ]], and (( )).

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Interview Preparation Beginner

Strings

String concatenation, length, substring extraction, case conversion, splitting, and comparison in Bash.

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Interview Preparation Beginner

User Input

Reading interactive input with read, prompts, hidden password input, timeouts, and reading input from a file or pipe.

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Interview Preparation Beginner

Variables

Declaring and using variables in Bash, quoting rules, variable scope, readonly and environment variables, and parameter expansion.

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Interview Preparation Beginner

Bash Fundamentals

What Bash actually is, the shebang line, script permissions and execution, comments, and the anatomy of a first real script.

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