find -name '*FOO*' -maxdepth 1 -print0 | xargs -r0 perl -MFile::Copy -
+e 'for(@ARGV){ $a=$_; s/FOO/BAR/; move($a,$_) }'

[download]
(Or if you are appalled by the find syntax, it may suffice to 
ls | grep FOO | xargs -r perl -MFile::Copy -e 'for(@ARGV){ $a=$_; s/FO
+O/BAR/; move($a,$_) }'

[download]
though that won't cope with pathologically named files.)

Makeshifts last the longest.

In reply to Re^3: Renaming bunches of files by Aristotle
in thread Renaming bunches of files by dragonchild

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