---
name: "regconcat"
section: "1"
platform: "linux"
package: "regina"
version: "7.4.1-4"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/regconcat"
---

# regconcat(1)

Combine several Regina data files

## NAME

regconcat - Combine several Regina data files

## SYNOPSIS

**regconcat** \[ **-o** *output-file* \] *input-file ...*

**regconcat** { **-v, --version** \| **-?, --help** }

## DESCRIPTION

This utility combines several individual Regina data files into a single larger data file.  The new file will have a container as its top-level packet, and beneath this container will be the packet trees from each of the input files that you supply.

If an output file is specified through option **-o**, the new file will be written as compressed XML to this output file. Otherwise the new file will be written as uncompressed XML to standard output.

## OPTIONS

- **-o** *output-file*

  Specifies that the new combined data file should be written as compressed XML to the given output file.

- **-v, --version**

  Show which version of Regina is being used, and exit immediately.

- **-?, --help**

  Display brief usage information, and exit immediately.

## MACOS USERS

If you downloaded a drag-and-drop app bundle, this utility is shipped inside it.  If you dragged Regina to the main Applications folder, you can run it as /Applications/Regina.app/Contents/MacOS/regconcat.

## WINDOWS USERS

The command-line utilities are installed beneath the *Program Files* directory; on some machines this directory is called *Program Files (x86)*. You can start this utility by running c:\\Program Files\\Regina\\Regina 7.4.1\\bin\\regconcat.exe.

## SEE ALSO

regina-gui.

## AUTHOR

This utility was written by Benjamin Burton \<bab@maths.uq.edu.au\>. Many people have been involved in the development of Regina; see the users' handbook for a full list of credits.