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(Processes): add documentation for system*.

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Rob Browning 2003-11-19 21:39:35 +00:00
parent d26af5b23e
commit 8141bd983d
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doc/ref/posix.texi
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@ -1470,6 +1470,26 @@ If @code{system} is called without arguments, return a boolean
indicating whether the command processor is available. indicating whether the command processor is available.
@end deffn @end deffn
@deffn {Scheme Procedure} system* . args
@deffnx {C Function} scm_system_star (args)
Execute the command indicated by @var{args}. The first element must
be a string indicating the command to be executed, and the remaining
items must be strings representing each of the arguments to that
command.
This function returns the exit status of the command as provided by
@code{waitpid}. This value can be handled with @code{status:exit-val}
and the related functions.
@code{system*} is similar to @code{system}, but accepts only one
string per-argument, and performs no shell interpretation. The
command is executed using fork and execlp. Accordingly this function
may be safer than @code{system} in situations where shell
interpretation is not required.
Example: (system* "echo" "foo" "bar")
@end deffn
@deffn {Scheme Procedure} primitive-exit [status] @deffn {Scheme Procedure} primitive-exit [status]
@deffnx {C Function} scm_primitive_exit (status) @deffnx {C Function} scm_primitive_exit (status)
Terminate the current process without unwinding the Scheme stack. Terminate the current process without unwinding the Scheme stack.