du

The du command helps get information on the disk usage. Typically you will want to use the -h flag to make the response human readable. You can also use the -d flag and a number to specify the depth. For example:

$  du -h -d 1

on the root of this repo, for example, gets

235M    ./node_modules
40K     ./src
328K    ./.docusaurus
2.9M    ./.git
908K    ./docs
72K     ./iac
12K     ./.github
208K    ./static
239M    .

If you include the -a flag you will get output for all files, not just directories. You can also specify a path after a command to get the disk usage from that directory. The -c flag will give you a grand total at the end.

du -hac -d 1 /<path to>/cka-prep

will get the output

235M    /<path to>/cka-prep/node_modules
396K    /<path to>/cka-prep/package-lock.json
4.0K    /<path to>/cka-prep/sidebars.js
40K     /<path to>/cka-prep/src
4.0K    /<path to>/cka-prep/babel.config.js
4.0K    /<path to>/cka-prep/.gitignore
4.0K    /<path to>/cka-prep/package.json
4.0K    /<path to>/cka-prep/README.md
328K    /<path to>/cka-prep/.docusaurus
2.9M    /<path to>/cka-prep/.git
908K    /<path to>/cka-prep/docs
72K     /<path to>/cka-prep/iac
12K     /<path to>/cka-prep/.github
208K    /<path to>/cka-prep/static
4.0K    /<path to>/cka-prep/docusaurus.config.js
239M    /<path to>/cka-prep
239M    total