---
name: "pxrr"
section: "1"
platform: "linux"
package: "phyx"
version: "1.3.2+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/pxrr"
---

# pxrr(1)

reroot (or unroot) a tree file and produce a newick

## NAME

pxrr - reroot (or unroot) a tree file and produce a newick

## SYNOPSIS

**pxrr** \[*OPTIONS*\]...

## DESCRIPTION

Reroot (or unroot) a tree file and produce a newick. This will take a newick- or nexus-formatted tree from a file or STDIN. Output is written in newick format.

## OPTIONS

- **-t**, **--treef**=*FILE*

  input tree file, STDIN otherwise

- **-g**, **--outgroups**=*CSL*

  outgroup sep by commas (NO SPACES!)

- **-f**, **--namesf**=*FILE*

  outgroups in a file (each on a line)

- **-r**, **--ranked**

  turn on ordering of outgroups. will root on first one present

- **-u**, **--unroot**

  unroot the tree

- **-s**, **--silent**

  do not error if outgroup(s) not found

- **-o**, **--outf**=*FILE*

  output tree file, STOUT otherwise

- **-h**, **--help**

  display this help and exit

- **-V**, **--version**

  display version and exit

- **-C**, **--citation**

  display phyx citation and exit

## CITATION

Brown, Joseph W., Joseph F. Walker, and Stephen A. Smith. 2017. Phyx: phylogenetic tools for unix. Bioinformatics 33(12): 1886-1888. https://doi.org/10.1093/bioinformatics/btx063.

## AUTHOR

Written by Stephen A. Smith (blackrim), Joseph W. Brown

## REPORTING BUGS

Report bugs to: \<https://github.com/FePhyFoFum/phyx/issues\> phyx home page: \<https://github.com/FePhyFoFum/phyx\>

## COPYRIGHT

Copyright © 2014-2024 FePhyFoFum License GPLv3