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How to look for S3 mount in linux box

# Method 1 in command prompt.
df -aTh 

# Method 2 in command prompt. This shows details of the mount points
ps -ef |grep s3fs

# Method 3 in command prompt.
mount -l |grep s3fs. (if you do not do this you will see a lot of mounts)

These are references on AWS.

AWS Architecture Center

AWS Blog