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            Access environment variables?

There is no standard for dumping a Lisp image. Here are the commands from some lisp implementations: Lucid: DISKSAVE Symbolics: Save World [CP command] CMU CL: SAVE-LISP Franz Allegro: EXCL:DUMPLISP (documented) SAVE-IMAGE (undocumented) Medley: IL:SYSOUT or IL:MAKESYS MCL: SAVE-APPLICATION &key :toplevel-function :creator :excise-compiler :size :resources :init-file :clear-clos-caches KCL: (si:save-system "saved_kcl") LispWorks: LW:SAVE-IMAGE Be sure to garbage collect before dumping the image. You may need to experiment with the kind of garbage collection for large images, and may find better results if you build the image in stages.

There is no standard for running a Unix shell command from Lisp, especially since not all Lisps run on top of Unix. Here are the commands from some Lisp implementations: Allegro: EXCL:RUN-SHELL-COMMAND (command &key input output error-output wait if-input-does-not-exist if-output-exists if-error-output-exists) Lucid: RUN-PROGRAM (name &key input output error-output (wait t) arguments (if-input-does-not-exist :error) (if-output-exists :error) (if-error-output-exists :error)) KCL: SYSTEM For example, (system "ls -l"). You can also try RUN-PROCESS and EXCLP, but they don't work with all versions of KCL. CMU CL: RUN-PROGRAM (program args &key (env environment-list) (wait t) pty input if-input-does-not-exist output (if-output-exists :error) (error :output) (if-error-exists :error) status-hook before-execve) LispWorks: FOREIGN:CALL-SYSTEM-SHOWING-OUTPUT

To toggle source file recording and cross-reference annotations, use Allegro: excl:record-source-file-info excl:load-source-file-info excl:record-xref-info excl:load-xref-info LispWorks: (toggle-source-debugging nil)

Memory management: CMU CL: (bytes-consed-between-gcs) [this is setfable] Lucid: (change-memory-management &key growth-limit expand expand-reserved) Allegro: tenured-bytes-limit LispWorks: LW:GET-GC-PARAMETERS (use LW:SET-GC-PARAMETERS to change them)

Environment Variable Access: Allegro: (sys:getenv var) (sys:setenv var value) or (setf (sys:getenv var) value) Lucid: (environment-variable var) (set-environment-variable var value) CMU CL 17: (cdr (assoc (intern var :keyword) environment-list)) {A}KCL, GCL: (system:getenv var) CLISP: (system::getenv var)

Exiting/Quitting: CLISP: EXIT Allegro: EXIT (&optional excl::code &rest excl::args &key excl::no-unwind excl::quiet) LispWorks: BYE (&optional (arg 0)) Lucid: QUIT (&optional (lucid::status 0)) CMU CL: QUIT (&optional recklessly-p)