# Download a file preserving the filename.
curl http://example.com/file.zip -O

# Download a file and specify a new filename.
curl http://example.com/file.zip -o new_file.zip

# Fetch only the HTTP headers from a response.
curl -I http://example.com

# Download all sequentially numbered files (1-24)
curl http://example.com/pic[1-24].jpg

# Download a file from FTP.
curl -u username:password -O ftp://example.com/pub/file.zip

# Get an FTP directory listing.
curl ftp://username:password@example.com

# Resume a previously failed download.
curl -C - -o partial_file.zip http://example.com/file.zip

# Fetch your external IP and network info. as JSON.
curl http://ifconfig.me/all/json