lua 批量重命名文件

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local s = io.popen("dir F:\\headicon /b/s") local filelist = s:read("*all")   local start_pos = 0 local count = 0 while true do     _,end_pos, line = string.find(filelist, "([^\n\r]+.jpg)", start_pos)     if not end_pos then         break     end     count = count + 1     if count <= 100 then         os.rename(line , string.format("F:\\headicon\\%s.jpg", count))     end       print(line)     start_pos = end_pos + 1 end