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use ruby
Authored by: ngb on Jul 14, '04 06:01:28PM

alias rubyrename='ruby -e "a = ARGV.shift; b = ARGV.shift; ARGV.each{ |f| File.rename(f, f.gsub(a, b)) }"'
use as follows

rubyrename oldstring newstring filelist
alternatively, you could just hardcode values for a and b

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