Tcl_FindExecutable(3) Tcl Library ProceduresTcl_FindExecutable(3)_________________________________________________________________NAMETcl_FindExecutable - identify the binary file containing
the application
SYNOPSIS
#include <tcl.h>
char *
Tcl_FindExecutable(argv0)ARGUMENTS
char *argv0 (in) The first command-line argument
to the program, which gives the
application's name.
_________________________________________________________________DESCRIPTION
This procedure computes the full path name of the exe-
cutable 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 load command. It is also returned by the info name-
ofexecutable command.
On UNIX platforms this procedure is typically invoked as
the very first thing in the application's main program;
it must be passed argv[0] as its argument. Tcl_FindExe-
cutable uses argv0 along with the PATH environment vari-
able to find the application's executable, if possible.
If it fails to find the binary, then future calls to info
nameofexecutable will return an empty string.
KEYWORDS
binary, executable file
Tcl 7.5 1