Bash Scripting Basics: Commands, Conditionals and Loops
Bash scripting basics tested on Ubuntu and RHEL: variables, commands, arguments, exit codes, if and case, file tests, arithmetic, loops and a log checker.
Continue Reading →
Bash Functions, Arrays, getopts and trap: Practical Guide
Bash functions, arrays, getopts, trap, regex and parameter expansion explained with tested Ubuntu and RHEL examples, plus one small script that uses them all.
Continue Reading →
Bash Loops in Practice: for, while and until Examples
Bash for, while and until loops tested on Ubuntu and RHEL: arguments, reading files line by line, safe filenames, polling timeouts and subshell bugs.
Continue Reading →
Bash Variables Explained: Expansion, Quoting, Validation
Bash variables explained with real output: readonly, command substitution, integer math, ${var:-default}, string tricks, validation and quoting.
Continue Reading →
Bash Environment Variables and .bashrc vs .bash_profile
Bash environment variables explained with real output: PATH, HOME, USER, SHELL, LANG, TERM, local vs exported variables, and which startup file Bash reads.
Continue Reading →
Your First Bash Script: Shebang, Shell Types and Limits
Write and run your first Bash script, pick the right shebang (#!/bin/bash vs env), understand login and interactive shells, and know when to switch languages.
Continue Reading →
What Is Shell Scripting in Linux? Shells Explained
What shell scripting is and how it runs on Linux, shell vs terminal, Bash vs sh vs zsh vs ksh vs fish, and why sysadmins and DevOps use it. Real output.
Continue Reading →