---
name: "checkisomd5"
section: "1"
platform: "linux"
package: "isomd5sum"
version: "1.2.5-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/checkisomd5"
---

# checkisomd5(1)

check an MD5 checksum implanted by implantisomd5

## NAME

checkisomd5 — check an MD5 checksum implanted by **implantisomd5**

## SYNOPSIS

**checkisomd5** \[**--md5sumonly**\]  \[**--verbose**\]  \[**--gauge**\]  \[isofilename  \| blockdevice \]

## DESCRIPTION

This manual page documents briefly the **checkisomd5** command.  **checkisomd5** is a program that checks an embedded MD5 checksum in a ISO9660 image (.iso), or block device.  The checksum is embedded by the corresponding **implantisomd5** command.

The check can be aborted by pressing Esc key.

## EXIT STATUS

Program returns exit status 0 if the checksum is correct, 1 if the checksum is incorrect or non-existent, or 2 if the check was aborted.

## OPTIONS

- **--md5sumonly**

  Do not check the target.  Instead, output human-readable information about the target's checksums.

- **--verbose**

  Display human-readable progress as the target is checked.  Without this option, nothing is outputted except errors.

- **--gauge**

  Display a series of numbers from 0 to 100, corresponding to check progress.  This output can be piped to **dialog --gauge** for a user-friendly progress bar.

## SEE ALSO

implantisomd5 (1).