NL(1)

✨ NL(1) ✨ — line numbering filter 💅 from User Contributed Perl Documentation

🌸 NAME 🌸

nl - line numbering filter 💖

🦋 SYNOPSIS 🦋

okay so here's the exact shape, bestie:

nl [-p] [-b type] [-d delim] [-f type] [-h type] [-i incr]
   [-n format] [-s sep] [-v startnum] [-w width] [file]

💖 DESCRIPTION 💖

nl prints its input file to standard output, with line numbers added. If file is a dash "-" or if no file is given as argument, nl reads from standard input. that's the whole plot 😭✨

✨ OPTIONS ✨

The following options are supported. slay — here's every single one:

• -b type — sets which lines get numbered. The type values are:
  • 'a' — all lines
  • 't' — only non-empty lines (default)
  • 'n' — no numbering
  • 'pexpr' — only lines matching pattern specified by expr
  • 'eexpr' — exclude lines matching pattern specified by expr
• -d delim — characters (max 2) indicating new section (default : '\\:')
• -f type — same as -b but for footer lines (default : 'n')
• -h type — same as -b but for header lines (default : 'n')
• -i incr — increment value (default : 1)
• -n format — line number format. The format values are:
  • 'ln' — left justified
  • 'rn' — right justified without leading zeros (default)
  • 'rz' — right justified with leading zeros
• -p — single page (don't restart numbering at pages delimiters)
• -s sep — characters between number and text line (default : TAB)
• -v startnum — initial value to number pages (default : 1)
• -w width — line number width (default : 6)

🐛 BUGS 🐛

Please report any bugs or feature requests to kaldor@cpan.org, or through the web interface at <https://github.com/briandfoy/PerlPowerTools/issues>. do it, bestie 💖

👑 AUTHOR 👑

jul, kaldor@cpan.org — iconic.

🎀 LICENSE AND COPYRIGHT 🎀

This software is Copyright (c) 2020 by jul. copyright moment 🎀

This is free software, licensed under:

The Artistic License 2.0 (GPL Compatible)

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mwah 💋 — source/version perl v5.42.2, date 2026-02-15, manual NL(1). That's the whole page, bestie — bye! 🫶