The given command is a single-line command using gsutil, the command-line tool for interacting with Google Cloud Storage. It performs a high-performance data transfer (copy) operation (cp) from one location in Google Cloud Storage (gs://source) to another location (gs://destination).
gsutil -o "GSUtil:parallel_composite_upload_threshold=150M" \
-o "GSUtil:parallel_thread_count=10" \
-o "GSUtil:check_hashes=if_fast_else_skip" \
-h "Content-Encoding:gzip" \
-o "GSUtil:sliced_object_download=true" \