Rename all files in a directory to the md5 hash

for i in *; do sum=$(md5sum $i); mv -- "$i" "${sum%% *}"; done

2
By: malsploit
2019-10-17 08:46:22
md5sum mv md5sum
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hillarydavidson · 62 weeks and 4 days ago
I guess it would be good if we add some error handling. Two or more files could hash to the same checksum - the so called collision - and vanish without a trace. I did a little experiment - touched 10 empty files (I am using zsh, my favorite shell)... for ((i=0; i<10; ++i)) for> touch file_$i Next I ran the above command: for i in *; do sum=$(md5sum $i); mv -- "$i" "${sum%% *}"; done ls d41d8cd98f00b204e9800998ecf8427e This just gave me one file... Some kind of warning message - or skipping a colliding file would be good.
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