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Asked: 2026-05-26T04:17:57+00:00

In clisp, the following code works: (defun hit-history () (shell tail ssqHitNum.txt)) However, in

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In clisp, the following code works:

(defun hit-history () (shell "tail ssqHitNum.txt"))

However, in Clozure CL, the shell function is not supported!

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1 Answer

  1. Editorial Team

    No, there is no standard way, but there are libraries which provide this functionality for the important implementations. For example, there’s trivial-shell available in Quicklisp, which provides shell-command. (I didn’t actually test it, but its among the recommended libraries on CLiki.) There is also external-program. Update: inferior-shell seems to be prefered these days, as Ehvince points out in a comment and his own answer.

    You could also use read-time conditionals to make different implementations use their respective functionality to do this.

    CCL has ccl:run-program, for example:

    CL-USER> (run-program "whoami" '() :output *standard-output*)
foobar
#<EXTERNAL-PROCESS (whoami)[NIL] (EXITED : 0) #xC695EA6>
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