Heredoc
Table of Contents
1. Overview
- Definition: Heredoc (here-document) is a feature in Unix and programming languages like Bash, Perl, and Python for defining multiline string literals.
- Syntax: A heredoc starts with
<<followed by a delimiter (identifier) and ends with the same delimiter on a new line. - Usage: Commonly used for passing blocks of text to commands, or for creating multi-line strings directly in the script.
- Examples:
Bash:
cat <<EOF This is a heredoc example. It can span multiple lines. EOF
Python:
multiline_string = """This is a heredoc in Python. It can also span multiple lines."""