---
name: "nthash"
section: "1"
platform: "linux"
package: "nthash"
version: "2.3.0+dfsg-4"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/nthash"
---

# nthash(1)

Recursive hash function for hashing all possible k-mers in a DNA/RNA sequence

## NAME

nthash - Recursive hash function for hashing all possible k-mers in a DNA/RNA sequence

## SYNOPSIS

**ntHash** *-k VAR -o VAR* \[*-f VAR*\] \[*-h*\] \[*-s VAR*\] \[*--long*\] \[*--binary*\] \[*--verbose*\] *files*

## DESCRIPTION

Unknown argument: **--help**

### Positional arguments:

- files

  Input sequence files \[nargs: 0 or more\] \[required\]

### Optional arguments:

**-v**, **--version** prints version information and exits

- **-k**

  k-mer size \[required\]

- **-o**

  Output file (for **-f** collect) or directory path \[required\]

- **-f**

  Output file organization (store hashes for each 'file', 'record', or 'collect' all hashes into a single file \[default: "file"\]

- **-h**

  Number of hashes per k-mer/seed \[default: 1\]

- **-s**

  Input spaced seed patterns separated by commas (e.g. 1110111,11011011). Performs k-mer hashing if no value provided.

- **--long**

  Optimize file reader for long sequences (\>5kbp)

- **--binary**

  Output hashes in binary files (otherwise plain text)

- **--verbose**

  Print progress to stdout

## AUTHOR

 This manpage was written by Nilesh Patra for the Debian distribution and\
  can be used for any other usage of the program.