[OpenSPARC-T2-SAM] / sam-t2 / devtools / v9 / man / man3 / Tcl_GetNameOfExecutable.3

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'\" RCS: @(#) $Id: FindExec.3,v 1.5 2001/09/28 17:07:54 msofer Exp $
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'\" The definitions below are for supplemental macros used in Tcl/Tk
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'\" .AP type name in/out ?indent?
'\"	Start paragraph describing an argument to a library procedure.
'\"	type is type of argument (int, etc.), in/out is either "in", "out",
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'\" .AS ?type? ?name?
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.TH Tcl_FindExecutable 3 8.1 Tcl "Tcl Library Procedures"
.BS
.SH NAME
Tcl_FindExecutable, Tcl_GetNameOfExecutable \- identify or return the name of the binary file containing the application
.SH SYNOPSIS
.nf
\fB#include <tcl.h>\fR
.sp
void
\fBTcl_FindExecutable\fR(\fIargv0\fR)
.sp
CONST char *
\fBTcl_GetNameOfExecutable\fR()
.SH ARGUMENTS
.AS char *argv0 in
.AP char *argv0 in
The first command-line argument to the program, which gives the
application's name.
.BE

.SH DESCRIPTION
.PP
The \fBTcl_FindExecutable\fR procedure computes the full path name of
the executable file from which the application was invoked and saves
it for Tcl's internal use.
The executable's path name is needed for several purposes in
Tcl.  For example, it is needed on some platforms in the
implementation of the \fBload\fR command.
It is also returned by the \fBinfo nameofexecutable\fR command.
.PP
On UNIX platforms this procedure is typically invoked as the very
first thing in the application's main program;  it must be passed
\fIargv[0]\fR as its argument.  It is important not to change the
working directory before the invocation.
\fBTcl_FindExecutable\fR uses \fIargv0\fR
along with the \fBPATH\fR environment variable to find the
application's executable, if possible.  If it fails to find
the binary, then future calls to \fBinfo nameofexecutable\fR
will return an empty string.
.PP
\fBTcl_GetNameOfExecutable\fR simply returns a pointer to the
internal full path name of the executable file as computed by
\fBTcl_FindExecutable\fR.  This procedure call is the C API
equivalent to the \fBinfo nameofexecutable\fR command.  NULL
is returned if the internal full path name has not been
computed or unknown.

.SH KEYWORDS
binary, executable file
Commit	Line	Data
920dae64 AT	1	'\"
	2	'\" Copyright (c) 1995-1996 Sun Microsystems, Inc.
	3	'\"
	4	'\" See the file "license.terms" for information on usage and redistribution
	5	'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
	6	'\"
	7	'\" RCS: @(#) $Id: FindExec.3,v 1.5 2001/09/28 17:07:54 msofer Exp $
	8	'\"
	9	'\" The definitions below are for supplemental macros used in Tcl/Tk
	10	'\" manual entries.
	11	'\"
	12	'\" .AP type name in/out ?indent?
	13	'\" Start paragraph describing an argument to a library procedure.
	14	'\" type is type of argument (int, etc.), in/out is either "in", "out",
	15	'\" or "in/out" to describe whether procedure reads or modifies arg,
	16	'\" and indent is equivalent to second arg of .IP (shouldn't ever be
	17	'\" needed; use .AS below instead)
	18	'\"
	19	'\" .AS ?type? ?name?
	20	'\" Give maximum sizes of arguments for setting tab stops. Type and
	21	'\" name are examples of largest possible arguments that will be passed
	22	'\" to .AP later. If args are omitted, default tab stops are used.
	23	'\"
	24	'\" .BS
	25	'\" Start box enclosure. From here until next .BE, everything will be
	26	'\" enclosed in one large box.
	27	'\"
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	31	'\" .CS
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	33	'\"
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	36	'\"
	37	'\" .VS ?version? ?br?
	38	'\" Begin vertical sidebar, for use in marking newly-changed parts
	39	'\" of man pages. The first argument is ignored and used for recording
	40	'\" the version when the .VS was added, so that the sidebars can be
	41	'\" found and removed when they reach a certain age. If another argument
	42	'\" is present, then a line break is forced before starting the sidebar.
	43	'\"
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	45	'\" End of vertical sidebar.
	46	'\"
	47	'\" .DS
	48	'\" Begin an indented unfilled display.
	49	'\"
	50	'\" .DE
	51	'\" End of indented unfilled display.
	52	'\"
	53	'\" .SO
	54	'\" Start of list of standard options for a Tk widget. The
	55	'\" options follow on successive lines, in four columns separated
	56	'\" by tabs.
	57	'\"
	58	'\" .SE
	59	'\" End of list of standard options for a Tk widget.
	60	'\"
	61	'\" .OP cmdName dbName dbClass
	62	'\" Start of description of a specific option. cmdName gives the
	63	'\" option's name as specified in the class command, dbName gives
	64	'\" the option's name in the option database, and dbClass gives
65	'\" the option's class in the option database.
66	'\"
67	'\" .UL arg1 arg2
68	'\" Print arg1 underlined, then print arg2 normally.
69	'\"
70	'\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
71	'\"
72	'\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
73	.if t .wh -1.3i ^B
74	.nr ^l \n(.l
75	.ad b
76	'\" # Start an argument description
77	.de AP
78	.ie !"\\$4"" .TP \\$4
79	.el \{\
80	. ie !"\\$2"" .TP \\n()Cu
81	. el .TP 15
82	.\}
83	.ta \\n()Au \\n()Bu
84	.ie !"\\$3"" \{\
85	\&\\$1 \\fI\\$2\\fP (\\$3)
86	.\".b
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105	.nr )C \\n()Bu+\\w'(in/out)'u+2n
106	..
107	.AS Tcl_Interp Tcl_CreateInterp in/out
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131	.\}
132	.el \}\
133	\h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'\|0u-1.5n\(ul'
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176	.el \h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'\|0u'\c
177	.\}
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204	..
205	'\" # SO - start of list of standard options
206	.de SO
207	.SH "STANDARD OPTIONS"
208	.LP
209	.nf
210	.ta 5.5c 11c
211	.ft B
212	..
213	'\" # SE - end of list of standard options
214	.de SE
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218	See the \\fBoptions\\fR manual entry for details on the standard options.
219	..
220	'\" # OP - start of full description for a single option
221	.de OP
222	.LP
223	.nf
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225	Command-Line Name: \\fB\\$1\\fR
226	Database Name: \\fB\\$2\\fR
227	Database Class: \\fB\\$3\\fR
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242	.de UL
243	\\$1\l'\|0\(ul'\\$2
244	..
245	.TH Tcl_FindExecutable 3 8.1 Tcl "Tcl Library Procedures"
246	.BS
247	.SH NAME
248	Tcl_FindExecutable, Tcl_GetNameOfExecutable \- identify or return the name of the binary file containing the application
249	.SH SYNOPSIS
250	.nf
251	\fB#include <tcl.h>\fR
252	.sp
253	void
254	\fBTcl_FindExecutable\fR(\fIargv0\fR)
255	.sp
256	CONST char *
257	\fBTcl_GetNameOfExecutable\fR()
258	.SH ARGUMENTS
259	.AS char *argv0 in
260	.AP char *argv0 in
261	The first command-line argument to the program, which gives the
262	application's name.
263	.BE
264
265	.SH DESCRIPTION
266	.PP
267	The \fBTcl_FindExecutable\fR procedure computes the full path name of
268	the executable file from which the application was invoked and saves
269	it for Tcl's internal use.
270	The executable's path name is needed for several purposes in
271	Tcl. For example, it is needed on some platforms in the
272	implementation of the \fBload\fR command.
273	It is also returned by the \fBinfo nameofexecutable\fR command.
274	.PP
275	On UNIX platforms this procedure is typically invoked as the very
276	first thing in the application's main program; it must be passed
277	\fIargv[0]\fR as its argument. It is important not to change the
278	working directory before the invocation.
279	\fBTcl_FindExecutable\fR uses \fIargv0\fR
280	along with the \fBPATH\fR environment variable to find the
281	application's executable, if possible. If it fails to find
282	the binary, then future calls to \fBinfo nameofexecutable\fR
283	will return an empty string.
284	.PP
285	\fBTcl_GetNameOfExecutable\fR simply returns a pointer to the
286	internal full path name of the executable file as computed by
287	\fBTcl_FindExecutable\fR. This procedure call is the C API
288	equivalent to the \fBinfo nameofexecutable\fR command. NULL
289	is returned if the internal full path name has not been
290	computed or unknown.
291
292	.SH KEYWORDS
293	binary, executable file