String Length

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String Length

String Length

${#variable} gives the number of characters in a string variable. It's a fast, built-in way to check string length without calling an external command like wc. This syntax is part of Bash's parameter expansion feature.

Note: Use ${#var} instead of piping through wc -c — it avoids starting a subprocess.

Example: String Length

bash

#!/bin/bash
name="Hello, Bash!"
echo "Length: ${#name}"

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String Length
Defining and Calling Functions
Substring Extraction
Function Parameters
String Replacement
Return Values and Exit Codes
Local Variables and Scope
String Comparison
Recursion
grep with Strings
Sourcing Files to Share Functions

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String Length

String Length

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