loop through a subfolder in bash

Question

I am super fresh in the bash language and I am missing several key concepts. Please excuse my ignorance.

My structure is

folder A
   |--- folderB1q/output/output.csv
   |--- folderB2q/output/output.csv
   |--- ...
   |--- folderB100q/output/output.csv

I want to read in bash from folder A each output.csv file and apply a function on it. I have tested my function and it works when I go to the directory of the file. I have thousands of directories though...

for each in *q/output/ 
do
my function .......
done

Thank you for your time and sorry for my bad coding

KamilCuk · Accepted Answer · 2021-07-19 13:58:00Z

2

each output.csv

Then loop over output.csv files.

for each in */output/output.csv
do
    my function "$each"
done

I have thousands of directories though...

With many directories, using a shell loop might be memory expensive, because shell. Use a find.

find . -type f -mindepth 3 -maxdepth 3 -path '.*/output/output.csv' |
xargs -d'\n' -n1 my_command

answered Jul 19, 2021 at 13:58

KamilCuk

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