About speed evaluation

[almahdi]

How slower find -exec repetitively calling bash -c'' for invoking a function
inside, compare to pipe repeated

such this 
https://stackoverflow.com/questions/4793892/recursively-rename-files-using-find-and-sed
all work correctly, so this ask all just on speed evaluation or comparison

(1st answer suggest function inside script to be invoked by -exec
2nd answer suggest solution by some core utils pipings )



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