This article explains Bash's test command and related conditional operators, demonstrates various if/then syntaxes, arithmetic and string comparisons, and shows how to test file attributes with practical code examples for Linux shell scripting.
Learn how Bash’s test command, brackets, arithmetic expressions, and if/then constructs enable condition testing, numeric, string, and file comparisons, with clear examples and syntax for practical shell scripting, including block and character device checks and common operators.
This tutorial explains several Bash techniques—including the test command, single‑bracket and double‑bracket syntaxes, and the stat utility—to reliably determine whether a file exists on a Linux system, complete with example code snippets and a reference table of test flags.
This guide explains how to use the Bash built‑in test command for evaluating numeric, string, and file conditions, shows practical examples with && and || chaining, and demonstrates alternative bracket syntax for robust shell scripting.
This guide walks through Bash's logical operators, file‑test flags, attribute checks, comparison operators, and both [] and [[ ]] conditional expressions, showing usage examples, syntax rules, and performance benchmarks to help you write more efficient shell scripts.
This guide explains Bash logical operators, file‑test flags, comparison symbols, and conditional expressions, showing how to choose the right tests, use test, [] and [[]] syntax, and improve script performance with practical examples.
This guide explains Bash logical test operators, file‑checking flags, comparison symbols, bracket expressions, and shows a performance benchmark where the [[ ]] syntax outperforms test and [] in large loops.
This article demystifies Bash's test constructs—including test, [, [[, and (( ))—explaining their syntax, return codes, common operators, and practical examples so readers can confidently write conditional logic in shell scripts.
