Drive Checksum add-on for Google Sheet lets you to find md5 checksum of your Google Drive files/folders.
Find md5 hash of individual drive files
Export as md5sum.txt hashes (to compare against source hashes using linux md5sum)
Full path display
Selectively pick file or folder
For more details about quotas visit: https://developers.google.com/apps-script/guides/services/quotas
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