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Scripting with Scheme Shell
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GOSH(1) Gauche Commands GOSH(1) NAME
gosh - a Scheme script interpreter SYNOPSIS
gosh [-biqV] [-I path ] [-A path ] [-u module ] [-l file ] [-e expr ] [-E expr ] [-f flag ] [--] [ script argument ... ] DESCRIPTION
Gosh is a stand-alone Scheme interpreter built on top of the Gauche Scheme script engine. When script is given, gosh loads the script, evaluating Scheme code in it. Then, if the script defines a procedure named main, gosh calls it with a single argument which is a list of the script name and subsequent arguments. When main returns an integer value, gosh exits with it as an exit code. If main returns non-integer value, or an error is signaled during evaluation, gosh exits with exit code 70 (EX_SOFT- WARE). See SRFI-22 (http://srfi.schemers.org/srfi-22/srfi-22.html) for details. If there's no main procedure defined in the script, gosh exits with code 0 after loading the script file. If no script file is given, gosh goes into an interactive mode. By default, gosh prompts the user to enter a Scheme expression, read and evaluates it, then prints the result, until EOF is read. If the standard input is not a terminal, however, gosh doesn't print a prompt; it allows a user to use gosh as a filter program. This behavior can be controlled by -i or -b option; see below. OPTIONS
Command line options are processed before loading the script file or entering the interactive mode. The options -I, -A, -u, -l, -L, -e and -E are processed in the order of appearance. For example, adding a load path by -I option affects the -l options after it, but not the ones before it. -V Prints gosh version and exits. -b Batch mode. Doesn't print prompt even the standard input is a terminal. Supersedes -i. -i Interactive mode. Forces to print prompt, even the standard input is not a terminal. -q Prevents reading the default initialization file. -Ipath Adds path in front of the load path list. -Apath Appends path to the tail of the load path list. -umodule Loads and imports module, as if "(use module )" is specified in the code. -lfile Loads a Scheme file file. -Lfile Like -l, but doesn't complain if file doesn't exist. -eexpr Evaluates a Scheme expression expr. -Eexpr Same as -e, except that the expr is read as if it is surrounded by parenthesis. -ptype Turns on the profiler. Currently type can only be 'time'. -fflag Sets various flags. case-fold uses case-insensitive reader (as in R5RS) load-verbose report while loading files no-inline don't inline primitive procedures and constants (combined no-inline-globals, no-inline-locals, and no-inline-constants.) no-inline-globals don't inline global procedures. no-inline-locals don't inline local procedures. no-inline-constants don't inline constants. no-post-inline-pass don't run post-inline optimization pass. -Ffeature Makes feature available in cond-expand forms. -- Specifies that there are no more options. If there are more arguments after this, they are taken as script file name and its argu- ments. ENVIRONMENT
GAUCHE_LOAD_PATH A colon separated list of the load paths. The paths are appended before the system default load paths. GAUCHE_DYNLOAD_PATH A colon separated list of the load paths for dynamically loaded objects. The paths are appended before the system default load paths. AUTHORS
Shiro Kawai (shiro @ acm . org) SEE ALSO
gauche-config(1) Gauche Scheme script engine: http://practical-scheme.net/gauche/ For the information about Scheme language, see http://www.schemers.org/ Gauche 0.9.1 GOSH(1)
