A reminder for some common s3cmd syntax.

s3cmd-syntax.sh

# Sync folders, follow symlinks, don't store FS attributes
s3cmd sync -F --no-preserve origin/ s3://bucket/

# Sync folders recursivly, delete remote objects with no corresponding local file
s3cmd sync -r --delete-removed assets/ s3://bucket/assets/

# Add header to single file on bucket
s3cmd modify -r --add-header=Cache-Control:max-age=0 s3://bucket/index.html

# Remove header from all files in folder (or on bucket)
s3cmd modify -r --remove-header=x-amz-meta-s3cmd-attrs s3://bucket/