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Archibugio avatar Ubuntu

How to assign a path variable on a bash file?

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Archibugio

I need to create a bash file that automatically makes new directories and assign some of them to a variable. I can make folder without problems but when I test variables with echo the console return me nothing:

#!/bin/bash

mkdir ~/Scrivania/TEST2/Salmonella_enterica
mkdir ~/Scrivania/TEST2/Salmonella_enterica/NCBI
mkdir ~/Scrivania/TEST2/Salmonella_enterica/NCBI/vs2
mkdir ~/Scrivania/TEST2/Salmonella_enterica/NCBI/vs2/Annotation
mkdir ~/Scrivania/TEST2/Salmonella_enterica/NCBI/vs2/Sequence
mkdir ~/Scrivania/TEST2/Salmonella_enterica/NCBI/vs2/Sequence/Chromosomes
mkdir ~/Scrivania/TEST2/Salmonella_enterica/NCBI/vs2/Sequence/WholeGenomeFasta
CHR="~/Scrivania/TEST2/Salmonella_enterica/NCBI/vs2/Sequence/Chromosomes"
ANN="~/Scrivania/TEST2/Salmonella_enterica/NCBI/vs2/Annotation"
WGF="~/Scrivania/TEST2/Salmonella_enterica/NCBI/vs2/Sequence/WholeGenomeFasta"
cd ~/Scrivania/TEST2

When I try to assign the variable directly from terminal it works perfectly (copy-pasted from the script, so no typo), it just does nothing when i execute the .sh, except creating folders. Thanks, i'm sure it's a stupid question but I never used bash files before.

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