Linux Blog

Recursive MD5 Sum Script

Filed under: Shell Script Sundays — TheLinuxBlog.com at 12:08 am on Sunday, December 9, 2007

This week I made this shell script to search one level deep and MD5 all of the files. I did this because I had multiple images and I wanted to see what images were the same so that I could merge them together. Its a pretty simple script & the output is the same as md5suming a file except there is more than one sum generated.

#MD5 Files in the directories
md5Dir () {
echo $directory;
for x in $(ls -1 $directory); do
md5sum $directory'/'$x;
done;
}
#Lists The Directories
for i in $(ls | grep active); do
directory=$i;
md5Dir;
done;

It only does one level deep but thats good enough for now. I am going to make it search recursively depending on the levels given by the user. I would also like to make it display files that are the same at the end.

It gets the job done for small directories, but if I wanted to run it on large multiple directories with lots of files in them I would definitely redirect the output to a file because it can be quite overwhelming. To run it just copy the code into a file and do the following:

sh [filename]

I hope this helps some one who is trying to MD5 multiple files in different directories!