Query Databases from Bash Scripts
You can query databases from bash scripts more easily than you might think, but the most surprising thing is how little explicit configuration most tool.
Bash Articles
50 articles
Debug Bash Scripts with set -x and set -e
Debug Bash Scripts with set -x and set -e — practical guide covering bash setup, configuration, and troubleshooting with real-world examples.
Write a Production-Ready Bash Deploy Script
A Bash deploy script isn't just a sequence of commands; it's an automated contract between your code and your infrastructure.
Automate Docker Tasks with Bash Scripts
Bash scripts can orchestrate Docker operations, but their real power lies in handling the state of your containers and images, not just running commands.
Set and Use Environment Variables in Bash
Bash gets a lot of its power from environment variables, but what most people don't realize is that the shell doesn't actually store the variables; it j.
File Operations in Bash: Read, Write, Copy, Delete
Bash file operations are surprisingly flexible, but the way it handles file descriptors means you're often not working directly with files, but with cha.
Manage File Permissions with chmod in Bash
chmod isn't just about making files executable; it's the gatekeeper of your filesystem, controlling who can read, write, and execute what.
Write Reusable Functions in Bash
Write Reusable Functions in Bash. Bash functions are a first-class citizen, not just a shell scripting quirk. Let's see one in action
Parse CLI Arguments in Bash with getopts
Parse CLI Arguments in Bash with getopts — practical guide covering bash setup, configuration, and troubleshooting with real-world examples.
Get Started Writing Bash Scripts
Bash scripting is the duct tape of the sysadmin world, and knowing how to wield it is less about arcane magic and more about understanding how to string.
Find Files and Text with grep and find in Bash
grep and find are your go-to tools for digging through the filesystem in Bash, but understanding their interplay is key to unlocking their true power.
Use Heredocs in Bash for Multi-Line Strings
Bash's << operator for heredocs, while seemingly straightforward, is actually a surprisingly powerful and flexible tool for injecting multi-line strings.
Prevent Bash Script Injection Vulnerabilities
Bash script injection vulnerabilities arise when untrusted input is incorporated into a Bash script without proper sanitization, allowing an attacker to.
Redirect Input and Output in Bash
Bash redirection lets you send the output of a command to a file, or send the contents of a file as input to a command, all without needing to manually .
Run Background Jobs and Control Processes in Bash
Bash's process management is surprisingly powerful, letting you orchestrate background tasks like a seasoned conductor, often without realizing it.
Process JSON in Bash with jq
jq is a lightweight and flexible command-line JSON processor that lets you slice, filter, map, and transform structured data with the same ease that sed.
Automate Kubernetes Tasks with Bash and kubectl
Bash and kubectl are your Swiss Army knife for automating Kubernetes tasks, but their real power isn't just running commands — it's about orchestrating .
Lint Bash Scripts with ShellCheck
Lint Bash Scripts with ShellCheck. ShellCheck finds bugs in your shell scripts by running them through a static analysis tool. echo "Hello, world
Prevent Race Conditions with Lock Files in Bash
Lock files are a surprisingly effective, albeit sometimes crude, way to prevent multiple instances of a bash script from running concurrently and corrup.
Add Proper Logging to Bash Scripts
Bash scripts often fail silently, leaving you guessing where things went wrong. Here's a script that logs its execution to a file
Master Loops in Bash: for, while, until
Bash loops are how you automate repetitive tasks, but the real magic is how they interact with the shell's internal state and process management.
Build Interactive Menus in Bash
Bash can build interactive menus that feel almost like a GUI, right from your terminal. Let's say you want a simple script to manage a few services: sta.
Write a Bash Monitoring and Alerting Script
Bash scripting is often seen as the duct tape of system administration, but it can also be a surprisingly powerful tool for proactive monitoring and ale.
Automate Network Tasks with Bash TCP/IP Scripts
Bash scripting is surprisingly powerful for network automation because it lets you treat network operations as simple text manipulation.
Run Bash Commands in Parallel for Speed
Running Bash commands in parallel isn't about magically making your CPU faster; it's about keeping all its cores busy doing useful work instead of waiti.
Speed Up Bash Scripts: 10 Performance Hacks
Speed Up Bash Scripts: 10 Performance Hacks — practical guide covering bash setup, configuration, and troubleshooting with real-world examples.
Use Pipes and Process Substitution in Bash
Pipes and process substitution are two of Bash's most powerful, yet often misunderstood, features for chaining commands together.
Manage Processes in Bash: Start, Stop, Monitor
Bash processes aren't just commands you run; they're living entities with states, lifecycles, and interactions you can orchestrate.
Use Regular Expressions in Bash Pattern Matching
Use Regular Expressions in Bash Pattern Matching — Bash's built-in ... conditional construct is where you'll most often encounter regular expression pa.
Bash Scripting Cheat Sheet: Commands You Use Daily
Bash scripting is more than just a way to automate tasks; it's a powerful tool for manipulating data and controlling your system's behavior.
Write Secure Bash Scripts: Pitfalls to Avoid
Bash scripts are often treated as disposable utilities, but when they handle sensitive information or execute with elevated privileges, they become a si.
Automate SSH Connections and Tasks with Bash
SSH connections are notoriously brittle, and trying to automate them with Bash scripts often feels like wrestling an octopus.
String Manipulation in Bash: 15 Practical Tricks
Bash string manipulation is surprisingly powerful, allowing you to do more than just echo variables. Let's see it in action
Use Subshells and Command Substitution in Bash
Bash's subshells and command substitution are surprisingly powerful tools for dynamic shell scripting, allowing you to weave the output of one command d.
Bash Script Template: Copy-Paste Starting Point
This template provides a robust starting point for any Bash script, incorporating best practices for error handling, variable management, and script str.
Process Text Files with awk and sed in Bash
awk and sed are your bash shell's built-in text manipulation powerhouses, letting you slice, dice, and transform files without needing to write a full-b.
Handle Signals Gracefully in Bash with trap
Bash's trap command lets you intercept signals that would normally terminate your script and run custom code instead, giving you a chance to clean up.
Unit Test Bash Scripts with BATS
Unit Test Bash Scripts with BATS. BATS lets you test your bash scripts with the rigor of other programming languages. Here’s how a typical test looks:
Variables and Data Types in Bash
Variables and Data Types in Bash. Bash variables are more like named pointers to strings than strict typed containers. Let's see it in action
Parse and Process YAML Files in Bash
Bash can actually parse YAML files without needing external tools like yq or jq by leveraging its built-in string manipulation capabilities, though it q.
Advanced Bash Techniques Every Developer Should Know
Bash isn't just for running commands; it's a surprisingly powerful scripting language that can automate complex workflows and manipulate data in ways ma.
Call REST APIs from Bash with curl
You can actually make curl do way more than just download files; it’s your go-to for interacting with web services directly from the command line.
Do Math in Bash: Arithmetic Operations Guide
Bash can do math, but it doesn't do it like a high-level language; it treats numbers as strings by default, so you need special syntax to get it to perf.
Use Arrays and Associative Arrays in Bash
Use Arrays and Associative Arrays in Bash — practical guide covering bash setup, configuration, and troubleshooting with real-world examples.
Automate AWS Tasks with Bash and AWS CLI
Bash and AWS CLI are your go-to tools for automating AWS tasks, but the real magic isn't in scripting simple aws s3 ls commands; it's in how you orchest.
Write a Robust Backup Script in Bash
A robust backup script in Bash isn't just about copying files; it’s about creating a self-healing, auditable, and efficient system that can actually rec.
Understand .bashrc vs .bash_profile and When to Use Each
You're probably wrestling with where to put your custom shell aliases and environment variables, and if you put them in.
Parse Config Files in Bash Scripts
Parse Config Files in Bash Scripts — practical guide covering bash setup, configuration, and troubleshooting with real-world examples.
Control Flow in Bash: if, else, case Explained
Bash's if, else, and case statements aren't just for basic branching; they're the bedrock of dynamic command execution, letting your scripts adapt to an.
Schedule Tasks with Bash Cron Job Scripts
Cron jobs are the unsung heroes of system administration, quietly executing tasks on a schedule. Let's see one in action