The variable si::*command-args* is set to the list of strings passed in when gcl is invoked.
Various flags are understood.
-eval
-eval
-load
-load
.
-f
-f
.
Open the file following -f
for input, skip the first line, and then
read and eval the rest of the forms in the file. This can be used
as with the shells to write small shell programs:
#!/usr/local/bin/gcl.exe -f (format t "hello world ~a~%" (nth 1 si::*command-args*))The value si::*command-args* will have the appropriate value. Thus if the above 2 line file is made executable and called `foo' then
tutorial% foo billy hello world billyNOTE: On many systems (eg SunOs) the first line of an executable script file such as:
#!/usr/local/bin/gcl.exe -fonly reads the first 32 characters! So if your pathname where the executable together with the '-f' amount to more than 32 characters the file will not be recognized. Also the executable must be the actual large binary file, [or a link to it], and not just a
/bin/sh
script. In latter case the
/bin/sh
interpreter would get invoked on the file.
Alternately one could invoke the file `foo' without making it
executable:
tutorial% gcl -f foo "from bill" hello world from billFinally perhaps the best way (why do we save the best for last.. I guess because we only figure it out after all the others..) The following file `myhello' has 4 lines:
#!/bin/sh #| Lisp will skip the next 2 lines on reading exec gcl -f "$0" $ |# (format t "hello world ~a~%" (nth 1 si::*command-args*))
marie% chmod a+x myhello marie% myhello bill hello world billThe advantage of this method is that `gcl' can itself be a shell script, which sets up environment and so on. Also the normal path will be searched to find `gcl' The disadvantage is that this would cause 2 invocations of `sh' and one invocation of `gcl'. The plan using `gcl.exe' bypasses the `sh' entirely. Inded invoking `gcl.exe' to print `hello world' is faster on most systems than a similar `csh' or `bash' script, but slightly slower than the old `sh'.
-batch
-dir
-libdir
-libdir `/d/wfs/gcl-2.0/'would mean that the files like gcl-tk/tk.o would be found by concatting the path to the libdir path, ie in
`/d/wfs/gcl-2.0/gcl-tk/tk.o'
-compile
-compile
.
Other flags affect compilation.
-o-file
-o-file
then do not produce an .o
file.
-c-file
-c-file
is specified, leave the intermediate .c
file there.
-h-file
-h-file
is specified, leave the intermediate .h
file there.
-data-file
-data-file
is specified, leave the intermediate .data
file there.
-system-p
-system-p
is specified then invoke compile-file
with the
:system-p t
keyword argument, meaning that the C init function
will bear a name based on the name of the file, so that it may be invoked
by name by C code.
Returns the current time in decoded time format. Returns nine values: second, minute, hour, date, month, year, day-of-week, daylight-saving-time-p, and time-zone.
Returns the host part of PATHNAME as a string.
Renames the file FILE to NEW-NAME. FILE may be a string, a pathname, or a stream.
Returns the author name of the specified file, as a string. FILE may be a string or a stream
Returns the host slot of PATHNAME.
Sets the file pointer of the specified file to POSITION, if POSITION is given. Otherwise, returns the current file position of the specified file.
Converts UNIVERSAL-TIME into a decoded time at the TIMEZONE. Returns nine values: second, minute, hour, date, month (1 - 12), year, day-of-week (0 - 6), daylight-saving-time-p, and time-zone. TIMEZONE in GCL defaults to 6, the time zone of Austin, Texas.
Returns the home directory of the logged in user as a pathname. HOST is ignored.
Returns a string that identifies the physical location of the current GCL.
Returns a list of files that match NAME. NAME may be a string, a pathname, or a file stream.
Returns a string that identifies the software version of the software under which GCL is currently running.
Returns a string which uniquely identifies PATHNAME with respect to DEFAULTS.
If the specified module is not present, then loads the appropriate file(s). PATHNAME may be a single pathname or it may be a list of pathnames.
Does the inverse operation of DECODE-UNIVERSAL-TIME.
Returns a string that tells you when the current GCL implementation is brought up.
Returns a string that identifies the machine instance of the machine on which GCL is currently running.
Displays information about storage allocation in the following format.
Returns the current time as a single integer in universal time format.
Returns the run time in the internal time format. This is useful for finding CPU usage. If the operating system allows, a second value containing CPU usage of child processes is returned.
Returns a string that identifies the physical location of the current GCL.
Returns the real time in the internal time format. This is useful for finding elapsed time.
Returns a string that identifies the machine type of the machine on which GCL is currently running.
Syntax:
(time form)
Evaluates FORM and outputs timing statistics on *TRACE-OUTPUT*.
Returns a string that identifies the software type of the software under which GCL is currently running.
Returns a string that tells you that you are using a version of GCL.
This function causes execution to be suspended for N seconds. N may be any non-negative, non-complex number.
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