bash script to create folder names out of a portion of a filename

Question

I'm new to bash, and coding. I have a list of files:

test-T01___2022.txt
test-T01__2021.txt
test-T01_NONE.txt
test-T02___2022.txt
test-T02__2021.txt
test-T02_NONE.txt
test-T03___2022.txt
test-T03__2021.txt
test-T03_NONE.txt

I'm trying to write a script to create folders T01 (containing *T01 files), T02 (containing all files with T02), etc. I'm trying with wildcards and regexps and something similar to this post but having some trouble. I appreciate some help.

Many thanks!

The proposed duplicate describes how to remove prefixes and suffixes from strings, which is what you want to do I think. — rghome, Jan 13 '23 at 15:16
@rghome indeed, I want to create folders from T0i for i belonging to [0-9] — HwiNoree27, Jan 13 '23 at 15:20

score 0 · Answer 1 · answered Jan 13 '23 at 15:36

0

Use the bash prefix and suffix removal operations. See the link in the comments for more details.

For example:

files=...
for file in $files
do
    a=${file#test-}
    dir=${a%%_*}
    mkdir "$dir"
    mv "$file" "$dir"
done

answered Jan 13 '23 at 15:36

rghome

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bash script to create folder names out of a portion of a filename

1 Answers1