md5sum is a computer program that calculates and verifies 128-bit MD5 hashes, as described in RFC 1321.

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2
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6answers
126 views

Compute md5sum of every 1MB part of stream from pipe

I want to do checksumming of large files and stream in unix/linux, and I want get many checksums from every large part of file/stream, every 1 MB or every 10MB. For example, I have disk image, ...
3
votes
1answer
69 views

Why does tar with -z option create archive with different hash everytime

Can you tell me why tar czf archive.tar dir creates archive with different hash everytime (I check with 'md5sum') Without compression parameter -z or with parameter -j instead all works fine. ...
25
votes
3answers
4k views

How accurate is `md5sum`?

When using md5sum to verify the integrity of a file, how accurate is the process? Does a verified MD5 mean that EVERY bit is exactly the same, or is there a threshold that must be broken before ...
1
vote
1answer
39 views

Quickly Maintain Database of sha256sums? [closed]

I have many different disks (primarily harddisks) storing various files. I want to know that they are all backed up in some form. Given that I have terabytes of files somehow (backups of backups ...
0
votes
1answer
346 views

Rename files by md5 checksum

What program can I use to rename files with their calculated md5 checksums? GUI or CLI Programs for Linux or Windows or scripts for DOS or the Linux terminal.
1
vote
3answers
172 views

Finding a file by md5sum

Given the md5sum of a file, I want to know if anywhere else in the directory tree is another file with the same md5sum (but maybe under a different name). How can I do that in bash? P.S.: To ...
0
votes
0answers
43 views

How to MD5sum via right-click in Lubuntu Precise?

I found this link (md5sum via right click in ubuntu) which explains how to do what I want to do in Ubuntu, but it doesn't work in Lubuntu... I don't have a "scripts sub-menu" in my right-click ...
0
votes
1answer
49 views

How to print md5sum on separate line?

I am trying to calculate the md5 hash of a string (say 'hunter5'). To do this, I run md5sum , type or paste the string, then type Control-D (EOT) twice. > md5sum ...
0
votes
2answers
164 views

find duplicate files by size and MDF

I am writing script to search for dups files and group them by size and then by their MD5 check sum. here is my script: find . -type f -printf "%s\n" | sort -rn | uniq -d | xargs -I{} -n1 find -type ...
0
votes
0answers
48 views

How to verify download of TortoiseHg software for Windows

When installing software onto my PC, I generally like to run a hash check against my download before installing it. Many download pages provide an MD5sum to use for this kind of check. See: Some ...
0
votes
1answer
2k views

MD5 hash of original Windows 8 pro iso file

What is the MD5 hash of the original Win 8 Professional ISO (upgrade version)? I downloaded the file over multiple download sessions, and want to make sure that the file is not corrupted. Does the ...
0
votes
1answer
710 views

How can I compute an md5sum on Macintosh OSX Lion?

How can I compute an md5sum on Macintosh OSX Lion? Is it built in to the OS or do I need to download an application?