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VMWare Workstation for home lab
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PICOLISP(1) User Commands PICOLISP(1) NAME
pil, picolisp - a fast, lightweight Lisp interpreter SYNOPSIS
pil [arguments ...] [-] [arguments ...] [+] picolisp [arguments ...] [-] [arguments ...] [+] DESCRIPTION
PicoLisp is a Lisp interpreter with a small memory footprint, yet relatively high execution speed. It combines an elegant and powerful lan- guage with built-in database functionality. pil is the startup front-end for the interpreter. It takes care of starting the binary base system and loading a useful runtime environ- ment. picolisp is just the bare interpreter binary. It is usually called in stand-alone scripts, using the she-bang notation in the first line, passing the minimal environment in lib.l and loading additional files as needed: #!/usr/bin/picolisp /usr/lib/picolisp/lib.l (load "@ext.l" "myfiles/lib.l" "myfiles/foo.l") (do ... something ...) (bye) INVOCATION
PicoLisp has no pre-defined command line flags; applications are free to define their own. Any built-in or user-level Lisp function can be invoked from the command line by prefixing it with a hyphen. Examples for built-in functions useful in this context are version (print the version number) or bye (exit the interpreter). Therefore, a minimal call to print the version number and then immediately exit the inter- preter would be: $ pil -version -bye Any other argument (not starting with a hyphen) should be the name of a file to be loaded. If the first character of a path or file name is an at-mark, it will be substituted with the path to the installation directory. All arguments are evaluated from left to right, then an interactive read-eval-print loop is entered (with a colon as prompt). A single hyphen stops the evaluation of the rest of the command line, so that the remaining arguments may be processed under program con- trol. If the very last command line argument is a single plus character, debugging mode is switched on at interpreter startup, before evaluating any of the command line arguments. A minimal interactive session is started with: $ pil + Here you can access the reference manual : (doc) and the online documentation for most functions, : (doc 'vi) or directly inspect their sources: : (vi 'doc) The interpreter can be terminated with : (bye) or by typing Ctrl-D. FILES
Runtime files are maintained in the ~/.pil directory: ~/.pil/tmp/<pid>/ Process-local temporary directories ~/.pil/history The line editor's history file BUGS
PicoLisp doesn't try to protect you from every possible programming error ("You asked for it, you got it"). AUTHOR
Alexander Burger <abu@software-lab.de> RESOURCES
Home page: http://home.picolisp.com Download: http://www.software-lab.de/down.html PICOLISP(1)
