# info > CONFIG.SUB

---
type: CommandReference
command: config.sub
mode: man
section: 1
source: man-pages
---

## Quick Reference
- `config.sub x86_64-pc-linux-gnu` — canonicalize the given triplet
- `config.sub --help` — print help
- `config.sub --version` — print version number

## Name
config.sub — validate and canonicalize a configuration triplet

## Synopsis
`config.sub [OPTION] CPU-MFR-OPSYS or ALIAS`

## Options
- `-h`, `--help` — print help and exit
- `-t`, `--time-stamp` — print date of last modification and exit
- `-v`, `--version` — print version number and exit