---
name: "gt-merge"
section: "1"
platform: "linux"
package: "genometools"
version: "1.6.5+ds-2.2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/gt-merge"
---

# gt-merge(1)

Merge sorted GFF3 files in sorted fashion.

## NAME

gt-merge - Merge sorted GFF3 files in sorted fashion.

## SYNOPSIS

**gt merge** \[option ...\] \[GFF3\_file ...\]

## DESCRIPTION

- **-retainids** \[*yes\|no*\]

  when available, use the original IDs provided in the source file (memory consumption is proportional to the input file size(s)) (default: no)

- **-tidy** \[*yes\|no*\]

  try to tidy the GFF3 files up during parsing (default: no)

- **-o** \[*filename*\]

  redirect output to specified file (default: undefined)

- **-gzip** \[*yes\|no*\]

  write gzip compressed output file (default: no)

- **-bzip2** \[*yes\|no*\]

  write bzip2 compressed output file (default: no)

- **-force** \[*yes\|no*\]

  force writing to output file (default: no)

- **-help**

  display help and exit

- **-version**

  display version information and exit

## REPORTING BUGS

Report bugs to https://github.com/genometools/genometools/issues.