hey
how can i change part of a file

i hve to do in a masses so mv or cp is not practical.
I have to change xxx_rrr to xxx_yyy

pls help

thank

find / -name xxx_rrr -exec mv xxx_yyy {} \;

If you want to change the file names from *_rrr to *_yyy use the below one...

find . -name "*_rrr" | xargs -I{} basename {} _rrr | xargs -I{} mv {}_rrr {}_yyy


if you want to replace the text inside the file, then

perl -i -pe 's/_rrr/_yyy/' *