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I could use packages installed with quick lisp: Using packages installed from quicklisp with clisp

I tried to execute the lisp code that uses packages using command line. The code is 

(ql:quickload "yacc") (use-package 'yacc)

When I tried it with clisp ex.lisp, I got this error message:

*** - READ from #<INPUT BUFFERED FILE-STREAM CHARACTER #P"ex.lisp" @2>: there is no package with name "QL"

I had to use clisp < ex.lisp to load the package.

What makes the difference between the two approaches? Is clisp < ex.lisp the only way to use packages in command line?

I found this How to use quicklisp when CL program is invoked as a shell script?, but it's not for clisp.

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    I suspect clisp handles init files differently in interactive and non-interactive mode, so your quicklisp setup isn't loaded when you launch with an argument. Commented Jan 7, 2014 at 15:06
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    @molbdnilo -- I would second that. According to the CLISP man page, "No RC file will be executed", when the interpreter is started as clisp script.lisp. The OP should use the -i option to cause setup.lisp to be loaded. Commented Jan 7, 2014 at 15:47

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Make a c.lisp that executes and exits the calculator.lisp.

(load "calculator.lisp") ;(in-package #:yacc-calculator) (yacc-calculator:calculator) (ext:exit)

Run clisp with -i: clisp -i c.lisp.

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