---
name: "combinedeltarpm"
section: "8"
platform: "linux"
package: "deltarpm"
version: "3.6.5+dfsg-1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/combinedeltarpm"
---

# combinedeltarpm(8)

combine multiple deltarpms to a single one

## NAME

combindeltarpm - combine multiple deltarpms to a single one

## SYNOPSIS

**combinedeltarpm** \[**-v**\] \[**-V** *version*\] \[**-z** *compression*\] \[**-S** *signaturerpm*\] *olddeltarpms...* *newdeltarpm*

## DESCRIPTION

combinedeltarpm creates a new deltarpm from multiple old ones. Applying the resulting deltarpm has the same effect as applying each of the old ones in the specified order. Use the **-v** option to make combinedeltarpm more verbose about its work.

combinedeltarpm normally produces a V3 format deltarpm, use the **-V** option to specify a different version if desired. The **-z** option can be used to specify a different compression method, the default is to use the same compression method as used in the last of the old deltarpms.

If you want to use a different header signature you can also specify a rpm with the **-S** option which will be used as signature reference. This feature can be used to if a deltarpm was made against an unsigned rpm which was later signed.

## MEMORY CONSIDERATIONS

The implementation of combinedeltarpm currently unpacks the add-blocks of the deltarpms in memory, thus it needs about twice the uncompressed payload size of the target rpm.

## SEE ALSO

[**makedeltarpm**(8)](/makedeltarpm/8.md) [**applydeltarpm**(8)](/applydeltarpm/8.md)

## AUTHOR

Michael Schroeder \<mls@suse.de\>