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find-executable in Common Lisp
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| (defun executables () | |
| (loop with path = (uiop:getenv "PATH") | |
| for p in (uiop:split-string path :separator ":") | |
| for dir = (probe-file p) | |
| when (uiop:directory-exists-p dir) | |
| append (uiop:directory-files dir))) | |
| (defun find-executable (name) | |
| (find name (executables) | |
| :test #'equalp | |
| :key #'pathname-name)) |
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