David McCracken - 2019-02-22

This example is from https://stackoverflow.com/questions/53809771/finding-all-image-files-in-folder-and-change-their-names-with-number?noredirect=1&lq=1. The question is how to rename files, 00043.jpg, 00086.jpg, 00123.jpg, ... 04523.jpg etc. to 00001.jpg, 00002.jpg, etc. in Linux. Linux is important here because, unlike Windows, Linux files are not alphabetically sorted. When executing under Linux and the rename is sequential, rene automatically sorts the directory to maintain the original order.
rene *.jpg :.jpg I/1//5 achieves what is requested. This uses rene's insert-increment rule, with a starting value of 1, default increment of 1, and field width of 5. The new names are 00001.jpg, 00002.jpg, etc.