Mastering Bash Parameter Expansion and Special Variables
Direct Variable Expansion
When a shell identifier is assigned a value, it can be referenced during execution by prefixing the name with a dollar sign. The interpreter substitutes the placeholder with its stored content at runtime.
#!/bin/bash
greeting="Hello"
target="World"
echo $greeting
echo $target
Running this snippet ...
Posted on Sat, 01 Aug 2026 17:00:29 +0000 by aalmos