Adding padded zeros to name files [duplicate]

Question

Based off this: How to zero pad a sequence of integers in bash so that all have the same width?

I need to create new file names to enter into an array representing chromosomes 1-22 with three digits (chromsome001_results_file.txt..chromsome022_results_file.txt)

Prior to using a three digit system (which sorts easier) I was using

for i in {1..22}; do echo chromsome${i}_results_file.txt; done

I have read about printf and seq but was wondering how they could be put within the middle of a loop surrounded by text to get the 001 to 022 to stick to the text.

Many thanks

the question you link to is enough information to solve this problem. — jeremysprofile
– jeremysprofile, Commented Aug 26, 2020 at 16:50

Barmar · Accepted Answer · 2020-08-26 16:49:45Z

Use printf specifying a field with and zero padding.

for i in {1..22}; do printf 'chromsome%03d_results_file.txt\n' "$i" done

In %03d, d means decimal output, 3 means 3 digits, and 0 means zero padding.

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