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Questions tagged [md5sum]

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

329 questions
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How to calculate MD5 checksum of blob using JQuery

My requirement is to upload large files (upto 50GB) through browser. So I used JQuery file upload plugin to upload those large files in smaller chunks. Now I have to calculate MD5 checksum for each chunk to avoid data corruption issues from browser…
Awesome
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How to add md5 sum to file metadata on a Linux file-system for the purpose of search and de-duplication?

I have a large number of files that occasionally have duplicates that have different names and would like to add a fslint like capability to the file system so that it can be de-duplicated and then any new files created in specified locations be…
Daniel Matthews
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bash - hash binary contents of variable without creating a file

I am trying to obtain the hash of the contents stored in a variable created from a curl statement without outputting the curl into a file. Basically I am trying to avoid: curl website.com/file.exe >> tempfile.bin md5sum tempfile.bin The above…
Onitsoga
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Differential backup issue using comparison with md5sum in shell script

Hello I have a quick question. I am trying to implement a differential backup but where I am having trouble is comparing the hash from md5sum.txt to diffmd5.txt I am getting the following error: Currently the command runs and gives no errors but…
Dmitriy
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Creating a shell script to traverse a file system and hash every file

I need to create a shell script that will traverse my entire file system, hash each file, and write it into a text database. I will be doing this on Ubuntu 12.04 and using md5sum and, if we are being honest here, I don't even know where to begin.…
Overlord
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Is there any way to get a consistent MD5 Hash from a maven build?

I can run the same maven build 5 times in a row on a group of jar/war files, without any changes to any of them, and yet I get a different MD5 hash on each of the jar/war files each time. I would expect the java compiler to produce the same hash…
user1209809
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Create md5sum in C

Im trying to use the md5sum command in a C program, right now im using dirent.h to get all the files in a folder, now, I want to get all the md5 of all those files, I am doing this: #include #include #include…
Hook
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bash, md5sum behaves strange

Why is this different? text="tralala" echo -n $text | md5sum - result: def7d827536761c20f449f69262ff20f echo -n "tralala" | md5sum - result : 7e4ef92d1472fa1a2d41b2d3c1d2b77a what am I doing wrong?
user1986815
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hexdigest generating different values in linux and windows for same file

I am using Digest::MD5 module and in that hexdigest returning different value for windows and linux. please help me in solving the issue. use Digest::MD5; my $ctx=Digest::MD5->new(); open RD, "input.txt"; $ctx->addfile(*RD); close RD; print…
Saravanan
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Using sed to add a space

I need to add a space between the md5sum and the file name. So my current output is: 1be9df543bb5fa37c4b53f0401072f98 file.xml And I need it to be: 1be9df543bb5fa37c4b53f0401072f98 file.xml I am a mess with regex/sed but this is what I have and…
cakes88
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Perl combine MD5 / SHA2 sum from multiple files to a MD5 / SHA2 sum

Below is the code which generates MD5 / SHA2 sum of individual files present under directory or sub directories recursively. #!/usr/bin/perl -w use strict; use warnings; use File::Find; use IO::File; use Digest::MD5; use Digest::SHA…
Abhinav
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BASH: dealing with duplicates using md5sum

I managed to separate hash from file path while finding duplicates in my directory. My next task is to print only the duplicates (ex: 3 files, 2 duplicates). What I did so far is placing the output in an array like this: arr=( $(find $1 -type f…
Atieh
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Why is MD5Sum so fast

I've been studying hashing in C/C++ and tried to replicate the md5sum command in Linux. After analysing the source code, it seems that md5sum relies on the md5 library's md5_stream. I've approximated the md5_stream function from the md5.h library…
MagikWorx
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How to XOR md5 hash values and cast them to HEX in postgresql

What I have tried so far SELECT md5(text) will return text (hex strings) . After that We need to xor them SELECT x'hex_string' # x'hex_string'; But the above results in binary values. How do I again convert them into hex string? Is…
Shankar
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MD5 Script and grep cmd

I found this neat little script on the Ubuntu website. The script verifies contents of CD by comparing it to an MD5 sum of an iso(9660) file. I don't understand why the script parses the string after the md5 sum is computed. CSUM1=$(CHECKSUM "$1" |…
LogicalConfusion
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