---
name: "reapr-facheck"
section: "1"
platform: "linux"
package: "reapr"
version: "1.0.18+dfsg-7"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/reapr-facheck"
---

# reapr-facheck(1)

checks IDs in fasta file

## NAME

reapr-facheck - checks IDs in fasta file

## SYNOPSIS

**reapr facheck** \<in.fa\> \[out\_prefix\]

## DESCRIPTION

Checks that the names in the fasta file are ok.  Things like trailing whitespace or characters (\|':-) could break the pipeline.

If out\_prefix is not given, it will die when a bad ID is found. No output means everything is OK.

If out\_prefix is given, writes a new fasta file out\_prefix.fa with new names, and out\_prefix.info which has the mapping from old name to new name.

## SEE ALSO

[reapr(1)](/reapr/1.md)