Batch rename files to their MD5 (or SHA1) sum with BASH.

[Surreal Killa]

I've found info on batch renaming (http://www.linuxforums.org/forum/lin...ing-files.html, Batch File Rename with awk and sed - Bash - Snipplr) but I'm wondering how I'd go about having the files named to their respective checksums?

[AdmiralBeotch]

Here ya go... Here's the command:

md5sum * | sed 's/^\(\w*\)\s*\(.*\)/\2 \1/' | while read LINE; do mv $LINE; done

Here's what it does:

echo $RANDOM > file1.txt
$ echo $RANDOM > file2.txt
$ echo $RANDOM > file3.txt
$ echo $RANDOM > file4.txt
$ echo $RANDOM > file5.txt
$ echo $RANDOM > file6.txt
$ echo $RANDOM > file7.txt


$ls
total 36K
drwxr-xr-x  2 admiral admiral 4.0K Feb  1 02:27 .
drwxr-xr-x  8 admiral admiral 4.0K Feb  1 02:28 ..
-rw-r--r--  1 admiral admiral    6 Feb  1 02:27 file1.txt
-rw-r--r--  1 admiral admiral    5 Feb  1 02:27 file2.txt
-rw-r--r--  1 admiral admiral    6 Feb  1 02:27 file3.txt
-rw-r--r--  1 admiral admiral    6 Feb  1 02:27 file4.txt
-rw-r--r--  1 admiral admiral    5 Feb  1 02:27 file5.txt
-rw-r--r--  1 admiral admiral    5 Feb  1 02:27 file6.txt
-rw-r--r--  1 admiral admiral    6 Feb  1 02:27 file7.txt

$ md5sum * | sed 's/^\(\w*\)\s*\(.*\)/\2 \1/' | while read LINE; do mv $LINE; done
$ ls
total 36K
drwxr-xr-x  2 admiral admiral 4.0K Feb  1 02:42 .
drwxr-xr-x  8 admiral admiral 4.0K Feb  1 02:28 ..
-rw-r--r--  1 admiral admiral    5 Feb  1 02:27 0e0c00262f7cc669cf69a927825a18e9
-rw-r--r--  1 admiral admiral    6 Feb  1 02:27 5043348975568be5f9279b601a132078
-rw-r--r--  1 admiral admiral    5 Feb  1 02:27 7a0c8deb59bc898fb7f4395ccb4af164
-rw-r--r--  1 admiral admiral    5 Feb  1 02:27 85b30d1e0a33b316fe29c8cce8e4cef0
-rw-r--r--  1 admiral admiral    6 Feb  1 02:27 85d12147f174d39429f63e7cf77b8d07
-rw-r--r--  1 admiral admiral    6 Feb  1 02:27 ace7931e8090a82547d00859545015c2
-rw-r--r--  1 admiral admiral    6 Feb  1 02:27 d9f2495a9f490f0fe60f599a5abe99a8

[Surreal Killa]

Thanks. I'll try that.

[twjolson]

What about renaming files but retaining their extension? I am trying to do that, but I am new to bash and regular expressions.