errno(1)

errno1

Look up errno names and descriptions

Usage

errno name-or-code errno [-ls] [--list] errno [-s] [--search] word errno [-S] [--search-all-locales] word

Overview

errno looks up errno macro names, errno codes, and the corresponding descriptions. For example, if given FCENOENTF[0] on a Linux system, it prints out the code 2 and the description "No such file or directory". If given the code 2, it prints FCENOENTF[0] and the same description.

Options

FC-lF[0], FC--listF[0]

List all errno values.

FC-sF[0], FC--searchF[0]

Search for errors whose description contains all the given words (case-insensitive).

FC-SF[0], FC--search-all-localesF[0]

Like FC--searchF[0], but searches all installed locales.

Releases

8 releases since Debian 7 (Wheezy); the text changed 4 times.

  1. 7
  2. 8
  3. 9–10
  4. 11–13
  5. Arch

--list until Debian 13 (Trixie); --search until Debian 13 (Trixie); --search-all-locales until Debian 13 (Trixie); -S until Debian 13 (Trixie); -l until Debian 13 (Trixie); -s until Debian 13 (Trixie).

Author

Lars Wirzenius

From moreutils 0.70-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.