md5sum is a command line program used to calculate MD5 hashes of files, and provides a simple way to check the integrity of a download.

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dpkg -V , What does the output mean?

I ran DPKG Verify on all packges and got this output and I don't know what it means : ??5?????? c /etc/lightdm/lightdm-gtk-greeter.conf ??5?????? c /etc/default/chromium-browser ??5?????? /usr/...
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Hash script to audit filesystem from /bin,/sbin,/usr/bin,/usr/sbin/ [duplicate]

I trying to do a script to audit files from many directories with md5sum sha256sum and sha512sum. Here is what I have now: #! /bin/bash clear hashone=md5sum hashtwo=sha256sum hashthree=...
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1answer
92 views

How to check the md5sum and sha256sum of a directory (an entire folder)? [duplicate]

In the terminal it's easy to find the md5sum of a single file, but how about for an entire directory? And would the same apply to sha256sum?
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1answer
33 views

Ubuntu 15.10 64bit Desktop invalid Checksums

Is the MD5 checksum for Ubuntu 15.10 incorrect or is there an issue for me? I'm getting a value of 3f29c5423393fc282216ed80e25af7c5 whereas the website is reporting an expected value of ...
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2answers
110 views

How do I compare two files containing several md5 checksums to determine changed files?

I have two files MD1 and MD2. MD1 contains md5sums: 5f31caf675f2542a971582442a6625f6 /root/md5filescreator/hash1.txt 4efe4ba4ba9fd45a29a57893906dcd30 /root/md5filescreator/hash2.txt ...
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1answer
33 views

Check several files with MD5

Every month, a company sends me a hard drive - ext4 encrypted with cryptsetup - with backup files from a server. In that drive there are 1000+ files, and they almost fill up a 2Tb HDD. Each file has ...
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2answers
220 views

Generate a separate .md5 file for each .fastq file in a directory?

I am trying to generate separate .md5 files for each .fastq file in a directory. I found solutions to generate a single .md5 file for many files, but this is not what I am looking for. I have file1....
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1answer
35 views

Are my md5 keys actually different? Do I have to redownload Ubuntu?

I have downloaded the ubuntu-14.04.3-desktop-amd64 Ubuntu version, I just did the md5sum check from the Windiws command prompt and had 414f5d28b2ac85d0e7aaf969f9bd0cb5 as a return. As far as the md5 ...
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1answer
24 views

How to get md5sum for online video without download

I am using Ubuntu. Is it possible to check md5sum of a video using its URL? In man md5sum : md5sum [OPTION]... [FILE]... So no URL. Is there any way to check md5sum
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2answers
455 views

Verifying Ubuntu ISO with `md5sum` - does the missing “*” matter?

I'm trying to understand security and verification a bit more so I've been playing with getting random ISOs and verifying them with md5sum. For instance if I download the Ubuntu GNOME 15.10 release ...
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0answers
81 views

Ubuntu Live USB installation found corrupted file, yet disk md5 checks out

An attempt was made to install ubuntu-14.04.3-desktop-amd64 on macbook pro-11,2 using a bootable USB flash drive, following the directions given here. Before the installation, I checked the disk for ...
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5answers
212 views

Bash get MD5 of online file

I need to get the MD5 hash of an online file, and then compare it to a file on the local machine. How can I do this in bash?
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1answer
338 views

Verify the current Google Chrome installation's integrity

I have installed Google Chrome from the .deb file provided here, but after I installed it I realised that I had not checked the MD5 of the .deb file to make sure that it was not corrupt or tampered ...
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1answer
2k views

Bashscript making a variable equal a command. error command not found

Hi i keep getting the error ./imagehash.sh: line 2: =: command not found When i know that i set the $CMD variable correctly (i tried the command outside the bash script and it worked just fine) ...
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2answers
77 views

Check for redundancy before downloading any file

Is there a way you can check whether you have already downloaded a file previously or not before actually downloading it. I know - wget can do that, only if the filename of the file trying to be ...
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1answer
25 views

md5sums are wrong on 2 downloads downloading a 3rd now

md5sums have been wrong on 2 of my downloads of ubuntu Desktop, checked all sums on the page with software link ubuntu provided, what's up?
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1answer
196 views

Dvd md5 same as iso, sha1 and sha256 not

So here's my dilemma: i ran these 3 commands in terminal, one at a time, to check the hashes of a burnt dvd: dd if=/dev/cdrom bs=1 count='size' | md5sum dd if=/dev/cdrom bs=1 count='size' | ...
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1answer
98 views

Checksum of system binaries changed

This morning I received several OSSEC notifications about changed integrity checksums. Affected files are /bin/mv, /bin/dir, /bin/pwd, /bin/chrgrp and about 50 similar binaries from /bin and /usr/bin. ...
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1answer
169 views

ubuntu MD5SUM hash doesnt match, now how to repair the iso image?

I have checked MD5SUM hash for the downloaded Ubuntu desktop 14.04 and it didn't match. I have downloaded the file from official website without using any client like utorrent etc. How can I repair ...
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2answers
1k views

MD5 checksum not matching

I just downloaded ubuntu-14.04.1-desktop-amd64.iso from the official website and ran a MD5 checksum d2b966f36e76486ff4c83fb085557f97 which doesn't match any of the MD5 checksums listed at http://...
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0answers
115 views

Checksum failed while bitbake

I am using ubuntu 12.04 to build gumstix-microwindows-image. However I am getting this error when I do bitbake gumstix-microwindows-image NOTE: Handling BitBake files: | (4957/4958) [99 %]ERROR: ...
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1answer
575 views

wubi compares 14.04 md5sum with md5sum from 14.04.1 file

I downloaded lubuntu-14.04.1-desktop-i386.iso. The calculated md5sum is: 281fc36d625f7ca0704297b3b811fa66 . According to help.ubuntu.com/community/UbuntuHashes that is the correct md5sum. Also ...
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1answer
87 views

I am not able to find the md5sum for ubuntu 14.04.1 iso image

I have just downloaded the new release of ubuntu which is ubuntu 14.04.1. but i am unable to find the md5sum for this. the ubuntu website show me the md5sums of ubuntu 14.04 and more previous versions....
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3answers
750 views

MD5 hash for xubuntu-14.04.1-desktop-amd64.iso

I cant find the MD5 hash for xubuntu-14.04.1-desktop-amd64.iso anywhere here. PS: I know that the 14.04 MD5 are there.
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1answer
419 views

Ubuntu 14.04.1 installation error Md5 hash mismatch

I have downloaded the ISO file with correct md5sum hash (119cb63b48c9a18f31f417f09655efbd) but while installing with wubi it says md5sum mismatch error as it is comparing the md5sum of the 14.04.1 ...
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1answer
698 views

MD5 checksum doesn't match

I'd like to install Ubuntu 14.04 LTS 64bit so i've downloaded it to my harddrive. I checked the MD5 checksum and it doesn't match. Mine is 119cb63b48c9a18f31f417f09655efbd The checksum given is ...
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1answer
48 views

Easy way to create an installation USB

Unetbootin and other scripts are too much of a hassle, and dd is just plain scary. How can an unenlightened user like me create an Ubuntu installation USB using intuitive, colorful graphical tools?
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1answer
562 views

14.04.1 md5sums

The official checksum page only goes until 14.04. Where can I check my 14.04.01 download (119cb63b48c9a18f31f417f09655efbd)?
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2answers
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a question about md5sum

Can i be sure, that a burned Ubuntu DVD with right md5 checksum result is free of any malware or could there still be malware on the DVD f.e. in case it was created on a already infected PC? Regards ...
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412 views

Can't install ubuntu 14.04 with usb & md5 check sums are different

when I try to install Ubuntu with usb stick Just gets to where its about to start with the purple ubuntu loading screen then it goes back to text and gives this message BusyBox v1.21.1 (Ubuntu 1:1....
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1answer
172 views

there's an alternative for the windows software “hash check” in ubuntu? [closed]

see: http://code.kliu.org/hashcheck/ there's an alternative for this shell extension for windows on ubuntu? see the features for more info never found a solution so convenient..
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1answer
334 views

Problem while installing Ubuntu 14.04 from USB drive

I have recently downloaded the Ubuntu 14.04 iso file via torrent. After downloading, I checked the MD5 sum of the downloaded .iso file and it was correct. Then I created bootable USB drive using the ...
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1answer
880 views

How to check the progress of md5sum on many huge files?

I have some 500 files of 650MB each, named bigfile.000 to bigfile.199 and I need to calculate the MD5 checksum of all files combined. The command I am using is: cat bigfile.* | md5sum I have the ...
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2answers
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How to automate comparison of md5sum hash values for a large number of files

I can check md5sum hash of a file from a terminal as, $ md5sum my_sensitive_file 8dad53cfc973c59864b8318263737462 my_sensitive_file But the difficult part is to compare the hash value with exact ...
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3answers
4k views

Dump md5 and sha1 checksums with a single command!

I am looking for command or utilities for calculating md5,sha1 hash value by one command. Right now ubuntu has sha1sum and md5sum command for calculating hash value.
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0answers
15 views

md5 Hash for 12.04.3 versions not listed [duplicate]

The UnbuntuHash page only lists hashes up to version 12.04.2. Where can I find the hash for 12.04.3?
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2answers
1k views

Better solution to a wrong md5 checksum

Sometimes, while downloading the ISO installation file, it may get corrupted on the way and becomes unfit for use. One possible solution that I know to deal with this problem is re-downloading the ...
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2answers
645 views

sha256sum/md5sum gives different results for big files (Ext4/Full disk Encryption)

Yesterday I reinstalled Ubuntu 13.04 64-bit on my computer (4GB RAM), and for the first time I decided to use Full Disk Encryption (all default settings). Today while running backups my computer ...
2
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2answers
5k views

How do I install a program using a .md5 file?

This is a very basic question that probably has a very easy answer. I am a frequent customer at humblebundle.com and some of the games come in a format called ".md5". I understand it is a format that ...
2
votes
1answer
966 views

Enabling TCP MD5 signatures in 12.04?

After running a NeXpose scan of one of my servers, I'm getting notice that TCP MD5 signatures may not be enabled. I've looked all over the net and from what I can see this feature should be enabled ...
2
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3answers
976 views

MD5 checksum cross-platform compatibility

I was just checking a md5 checksum to see if a file has downloaded correctly or not. situation is like this. I have downloaded a Linux iso file in Windows and checked the md5 with the Microsoft 'File ...
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1answer
591 views

How large a checksum file can md5sum handle?

I have a large collection of files (87.3 GB and 80054 objects) which I am copying from drive to drive. To make sure everything went well, I have made a checksum file to check with md5sum -c checksums....
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1answer
50 views

Searching for MD5SUMS of 12.04 Daily Build on January 19th

I downloaded and burned Precise Pangolin Daily Build on 19th January 2013 but forgot to gather the MD5Sum... which was a bad idea since I'd like to verify the file & disk now. Is there an archive ...
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2answers
4k views

How to identify and replace broken files in a corrupted Ubuntu ISO?

So, this isn't exactly an issue running Ubuntu, but rather with installing it. Every time I try to download the Ubuntu ISO (from any source) it seems to end up corrupt. That is, the MD5 sums are ...
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3answers
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Are ubuntu packages (deb-files) only md5sum secured?

Introductory Background to the question below### (so the question is more usable to more people) Inside of an Ubuntu/debian-style package (*.deb file) there is a file named /DEBIAN/md5sums which has ...
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1answer
9k views

Check hash (MD4, MD5, SHA-1, and CRC) on Ubuntu 12.04 and 12.10 [duplicate]

I have a lot of iso-files downloaded from internet. I want to check the hash from my Ubuntu 12.04 and 12.10. Is there any application on Ubuntu to check the MD4, MD5, SHA-1, and CRC hash? I need the ...
0
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1answer
2k views

Where can I get the hash for 12.04.1 ISO? [duplicate]

Possible Duplicate: Where to find the md5sums of Ubuntu ISO images? Where can I get the hash for 12.04.1 ISO? Is it the same for 12.04? I can't find it.
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2answers
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Why does integrity check fail for the 12.04.1 Alternate ISO?

I have followed various recommendations from the Ubuntu Documentation to create a bootable Ubuntu USB flash drive using the 12.04.1 Alternate install ISO-file for 64-bit PC. But the integrity test of ...
2
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3answers
622 views

Should I be worried? md5

I installed Ubuntu 12.04 a few weeks ago, from a download off of the website. I still have the dvd used. I was talking to my friend today about it and he mentioned something about checking the hash to ...
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What are the differences between “md5sum” and “sha256sum”?

Why we need two tools for verifying ISO . is there any specific things to consider between them ?