When I run the following manually via the command line, it work beautifully.

However, when I run this same script via sudo crontab, it just deletes everything. What could I be doing wrong:

Assumption: There are 10 snapshots for this specific droplet.

Script:

#!/bin/bash
DROPLETID=XXXXXXXXX
NUMRETAIN=5

SNAPSHOTS=$(sudo /snap/bin/doctl compute image list-user --format "ID,Type" --no-header | grep snapshot | wc -l)

# Deleting all snapshots beyond $NUMRETAIN
while [[ "$SNAPSHOTS" -gt "$NUMRETAIN" ]]
    do 
        OLDEST=$(sudo /snap/bin/doctl compute image list-user --format "ID,Type" --no-header | grep -e '$DROPLETID\|snapshot' | awk '{print$1}' | head -n 1)
        OLDESTNAME=$(sudo /snap/bin/doctl compute snapshot list --format "ID,Name,ResourceId" | grep $DROPLETID | awk '{print$2}' | head -n 1)
        echo "Deleting "$OLDESTNAME""
        sudo /snap/bin/doctl compute image delete $OLDEST --force 
        SNAPSHOTS=$(sudo /snap/bin/doctl compute snapshot list --format "ID,Name,ResourceId" --no-header | grep $DROPLETID | awk '{print$1}' | wc -l)
done

sudo crontab -e:

50 12 * * *  /bin/bash /home/aaron/projects/DOCTL-Remote-Snapshot/auto_snapshot.bash