COMMAND LINE OPTIONS

-hXXXXX

The XXXXX should be an integer, specifying the number of cons cells to allocate in the heap. The default is 100000:10. Or an integer followed by a colon, the number after which gives the maximum number of heaps to malloc with mark and sweep gc mode.

-iXXXXX

The XXXXX should be the name of an init file to load before going into the read/eval/print loop.

-gX

The X is 1 for a stop and copy garbage collector, 0 for a mark and sweep one (the default).

-oXXXXX

The XXXXX should be an integer, specifying the size of the obarray (symbol hash table) to use. Defaults to 1000. Each array element is a list of symbols.

-nXXXXX

The XXXXX should be an integer, specifying the number of pre-cons numbers to create. The default is 100.

-sXXXXX

The XXXXX should be an integer, specifying the number of bytes of recursion on the machine (C-call frame) stack to allow. This may be changed while the programming is running, and is mainly a convenience for detecting defects in programs. Default 200000.

-eXXXXX

The XXXXX is an expression to evaluate (after loading the init file, if any). After evaluating the expression the program will exit.

-lXXXXX

The XXXXX is a library directory to use for the require procedure. defaults to the environment variable SIOD_LIB or /usr/local/lib/siod.

-vXXXXX

The XXXXX is an integer verboseness from 0 to 4. When used in scripts the most generally useful level is 0. Defaults to 4.

-mXXXXX

The XXXXX can be 0 (default) which has no effect, or 1, which causes the scheme procedure main, with no arguments to be invoked after all files are loaded, or 2, which does the same thing but prevents further arguments from being interpreted, or 3, which will wrap special error handling around the call to main which is convenient for writing cgi scripts producing html. The environment may be obtained from the getenv procedure or the variable *env*. Arguments are found in *args*.

-vXXXXX

The XXXXX Is passed along to the siod argument processing, however if the value is greater than 0 a Content-type: text/plain header is generated immediately (except if the number is represented with a leading zero), which can be convenient for debugging WWW cgi scripts. For example:

#!/usr/local/bin/siod -v0,-m2
(define (main)


  (writes nil "Hello World0))
    

Which if invoked normally will result in

%hello.scm
Hello World
    

And with the verbose flag over-ride on the command line:

%hello.scm -v5
Content-type: text/plain
Welcome to SIOD, Scheme In One Defun, Version 3.1x 12-JUN-95
(C) Copyright 1988-1994 Paradigm Associates Inc.
10 heaps. size = 100000 cells, 2400000 bytes. 2048 inums. GC is mark and sweep
loading hello.scm
(define (main) (writes nil "Hello World
"))
done.
Hello World
EXIT