18 The SYSTEM Package

call-system

Function

Package

system

Syntax

call-system string &optional shell-type => status

Arguments

string: A string.
shell-type: A string.

Values

status: The exit status of the invoked shell.

Description

call-system allows Unix shell commands to be called from Lisp code. The output goes to standard output, as UNIX sees it (This normally means*terminal-io* in LispWorks.)

string is a string which is the shell command you wish to execute. shell-type gives the type of shell required. The default is the Bourne shell, /bin/sh. The C shell may be obtained by specifying"/bin/csh".

call-system returns the exit status of the shell invoked to execute the command.

Example

(call-system (format nil "adb ~a < ~a > ~a"
                (namestring   a)
                (namestring   b)
                (namestring   c)))

See Also
: open-pipe
call-system-showing-output