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deb-md5sums(5) dpkg suite deb-md5sums(5)

📄 NAME

deb-md5sums – package MD5 file digests

🚀 Quick Reference

Use Case	Command	Description
Verify package file integrity	md5sum -c DEBIAN/md5sums	Check MD5 digests against file list
Generate md5sums file for a package	find /usr -type f -exec md5sum {} \; > DEBIAN/md5sums	Create md5sums file from installed files
Inspect stored checksums	cat DEBIAN/md5sums	Display the MD5 digest list

📋 SYNOPSIS

📁 File Location

DEBIAN/md5sums

📝 DESCRIPTION

A package declares the MD5 digests for the package file contents by including an md5sums file in its control archive (i.e. DEBIAN/md5sums during package creation). This file is used for integrity verification and deduplication purposes, and not for any kind of security purpose.

This file contains a list of MD5 digests (as 32 case-insensitive hexadecimal characters) followed by two spaces (U+0020 SPACE) and the absolute pathname of a plain file, one per line.

Trailing slashes (U+002F /) in the pathname will be trimmed. Neither trailing whitespace nor empty or whitespace-only lines are accepted.

If the control file does not exist in the binary package, dpkg(1) will generate the matching information at unpack time (since dpkg 1.16.3).

💡 EXAMPLE

53c0d4afe4bc4eccb5cb234d2e06ef4d  usr/bin/dpkg
f8da2bc74cdcad8b81c48a4f0d7bb0a8  usr/bin/dpkg-deb
70b913132de56e95e75de504979309b4  usr/bin/dpkg-divert
[…]

🔗 SEE ALSO

• md5sum(1)
• dpkg-deb(1)
• dpkg(1)

1.21.1 2025-09-09 deb-md5sums(5)

📄 NAME 🚀 Quick Reference 📋 SYNOPSIS 📝 DESCRIPTION 💡 EXAMPLE 🔗 SEE ALSO