data - emcconville/cif GitHub Wiki
Data
A literal string, or a location to where to read data from. If the given argument value starts with a "@" symbol, then cif will treat the argument values as a URI location, and read the contents of location as data value.
Example Usage
Encode string Hello World into a QR code
cif CIQRCodeGenerator -inputMessage "Hello World" hello.png
Encoded the contents of license.txt into QR code
cif CIQRCodeGenerator -inputMessage "@license.txt" legal.png