NL (Number Lines)

The nl command numbers lines in text files, providing an overview of line locations. By default, it numbers only non-empty lines, but this behavior can be modified. Syntax: nl [options] [file_name]. If no file is specified, nl reads from stdin. Valuable for text processing when line numbers are needed for reference or debugging purposes.

Visit the following resources to learn more:

• @article@nl command
• @article@Linux nl Command: Line Numbering
• @article@Master the Linux 'nl' Command: A Comprehensive Guide