rename multiple files in a directory

Question

I have a bunch of files in a directory. The file names are created like this: a_dc.ac.txt, a_dc.aa.txt, a_dc.cc.txt and so on. I need to replace all the a_dc portion of the names to a_adj. I tried the following but it's not working:

rename 's/a_dc/a_adj/s' *

Is there any other way to fix this? I am not sure why rename is not working.

P.S. I am using centos

Answer 1

Using find one-liner:

find . -maxdepth 1 -name 'a_dc.*.txt' -exec bash -c 'x="{}"; mv "$x" "a_adj.${x#*.*.}"' \;