errors-fyi

Look up error codes from the command line. Data is fetched live from errors.fyi — a community-maintained directory covering HTTP, POSIX, PostgreSQL, MySQL, Node.js, Python, AWS, Kubernetes, and more.

Installation

npm install -g errors-fyi

Requires Node 18 or later.

Usage

errorfyi <code> [options]

# Look up a code across all namespaces
errorfyi ENOENT
errorfyi 404
errorfyi 11000

# Filter to one namespace
errorfyi 23505 -n postgresql
errorfyi 1064 -n mysql

# Output raw JSON
errorfyi ECONNREFUSED --json

Symbolic codes with a numeric equivalent are cross-referenced automatically — looking up 2 will also return ENOENT, EACCES, and any other symbolic code mapped to that number.

Options

| Flag | Description | |---|---| | -n, --namespace <ns> | Filter results to one namespace | | -j, --json | Output raw JSON instead of formatted text | | -h, --help | Show usage |

Namespaces

aws curl dns docker git grpc http http2 java kubernetes mongodb mysql nodejs openssl posix postgresql python rsync ruby shell smtp sqlite systemd windows windows-errno

Licence

CC0 1.0 — data and code are in the public domain.