sbcl --core tps3 This is SBCL 2.0.1.debian, an implementation of ANSI Common Lisp. More information about SBCL is available at . SBCL is free software, provided as is, with absolutely no warranty. It is mostly in the public domain; some portions are provided under BSD-style licenses. See the CREDITS and COPYING files in the distribution for more information. tps3 for notme. Version from Friday, April 8, 2022 at 10:20:21. (c) Copyrighted by Carnegie Mellon University. All rights reserved. [Loading changes ... ... done] Argument supplied is not of type BOOLEAN. notme is not allowed to alter this flag. Please send mail to your friendly ETPS maintainer, if you think that you should be allowed to alter this flag! Flag not changed. debugger invoked on a SIMPLE-ERROR in thread #: Couldn't execute "ls": No such file or directory Type HELP for debugger help, or (SB-EXT:EXIT) to exit from SBCL. restarts (invokable by number or by possibly-abbreviated name): 0: [ABORT] Exit from the current thread. (ERROR "Couldn't execute ~S: ~A" "ls" "No such file or directory") source: (DEFTRAP ERROR (FIRST-ARG &REST ARGS) (PROGN (FORMAT *ERROR-OUTPUT* "~%Common Lisp error trapped.~%") (LET ((ERROR-STRING (COND # # #))) (PRINC ERROR-STRING *ERROR-OUTPUT*) (SIGNAL-EVENT (QUOTE ERROR) "Common Lisp error trapped.")))) 0]