/Shell/Bash/Rename all files in a folder with progressive numbers linux

Rename all files in a folder with progressive numbers linux

for i in *.txt; do
	new=$(printf "%01d.txt" "$a")
	mv -i -- "$i" "$new"
	let a=a+1
done

# "%01d.txt" 01 is the number of digits you want your name to be composed of,
# Example: %01.txt --> 1.txt , 2.txt, 3.txt, ..., 10.txt, ...
#		   %04.txt --> 0001.txt, 0002.txt, ..., 0010.txt, ...

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