Question

The task is to copy a file from several sub-directories that are numbered from n=1:10 (e.g. /dir_4/file.txt) to the main directory under a different name (e.g. file_4.txt) as follows:

for n=1:10
 cp /dir_n/file.txt file_n.txt
end

How to write and execute this script in Linux?

Answer 1

In bash, this should do it.

#!/bin/bash
for I in {1..10}; do
    cp /dir_${I}/file.txt file_${I}.txt
done