gzip tl;dr
This will remove file after compression:
# Remove file after compression
gzip file
# Keep file
gzip -k file
# Decompress file, remove archive, store on fs
gzip -d file
# Decompress file, write to stdout
gzip -dc file
This will remove file after compression:
# Remove file after compression
gzip file
# Keep file
gzip -k file
# Decompress file, remove archive, store on fs
gzip -d file
# Decompress file, write to stdout
gzip -dc file