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Guile Reference Manual

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13.2 Executable Modules

When Guile is installed, in addition to the (ice-9 FOO) modules, a set of executable modules (scripts BAR) is also installed. Each is a regular Scheme module that has some additional packaging so that it can be called as a program in its own right, from the shell. For this reason, we sometimes use the term script in this context to mean the same thing.

As a convenience, the guile-tools wrapper program is installed along w/ guile; it knows where a particular module is installed and calls it passing its args to the program. The result is that you need not augment your PATH. Usage is straightforward:

 
guile-tools --help
guile-tools --version
guile-tools [OPTION] PROGRAM [ARGS ...]

If PROGRAM is "list" or omitted, display contents of scripts dir, otherwise
PROGRAM is run w/ ARGS.  Options (only one of which may be used at a time):
 --scriptsdir DIR    -- Look in DIR for scripts
 --guileversion VERS -- Look in $pkgdatadir/VERS/scripts for scripts
 --source            -- Display PROGRAM source (ignore ARGS) to stdout

The modules are self-documenting. For example, to see the documentation for lint, use one (or both) of the shell commands:

 
guile-tools display-commentary '(scripts lint)'
guile-tools --source lint

The rest of this section describes the packaging that goes into creating an executable module. Feel free to skip to the next chapter.


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