If you dig a bit deeper into md5sum (or similar commands), you may want to improve your code by taking advantage of its features. It is common to save a checksum to a file (e.g. SUM), as you don't need to hardcode it in your script, and then use that file for the comparison, and use md5sum's exit code for the if statement:
Of course you need to create and update that file regularly.
Hi all,
I am kinda puzzled. When and Why do we use md5sum? I've read man pages for mp5sum, but didn't get anything out of it. Please, can someone explain this to me in couple of words.
Thank you all. (1 Reply)
i downloaded a Linux distribution from a FTP site today, and i found there is a file named MD5SUM in the same directory, with the following contents:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
c9a4d963a49e384e10dec9c2bd49ad73 valhalla-SRPMS-disc1.iso
41b03d068e84d2a17147aa27e704f79b ... (1 Reply)
Is it possible to call the unix command md5sum from within a C program. I am trying to write a C program that scans a directory and computes the MD5Sum of all the files in the directory. Whenever I use md5sum 'filename' I get the error 'md5sum undeclared'. Is there a header file or some library... (3 Replies)
something strange is that i find the md5sum command in different linux generate different result, for example, i have tried the same file in CentOS and Rhel, The md5 results are different, it is quite headache, who know the tricks? (3 Replies)
Hello,
I need to download multiple files from an FTP server but occasionally they arrive in error so I need to perform an integrity check. I've been attempting to write a bash script that does the following:
Downloads all files including those in sub directories
Perform md5sum using... (4 Replies)
And not to start. I can compare files, that's easy. The problem is that I compare files in a directory, and check if these files exist in another directory. The problem is that the file names are not the same. So I have to compare with "md5sum" or something similar. How I can do?
All this in... (7 Replies)
I'm trying to think of a way to compare two boxes and make sure their files will be the same. There may be extra files on one side and some on the other.
I also need to make sure the file content is identical.
So far I've gotten this to create a file
find /directorypath/ -type f -name... (3 Replies)
I'm running on a staging server. I will need to use expect and I think ssh or scp to the other boxes.
I need to see something like this....Enter:Host 1
Enter:Host 2
Enter full directory path to compare: example /apps/acd/jboss-customer1/
Enter User Id:
Enter Password:
( Assumes... (6 Replies)
I am getting No such file or directory if my variable contains white spaces... Is there a way to fix this?
This works
x="1.md5"
md5sum -c "$x"
This, does not
x="23\ 5\ 6\ 7\ 8\ 9\ 10.md5"
md5sum -c "$x"
md5sum: '23\ 5\ 6\ 7\ 8\ 9\ 10.md5': No such file or directory
How do I fix... (1 Reply)