diff options
| -rw-r--r-- | doc/exec.n | 44 | ||||
| -rw-r--r-- | doc/tclvars.n | 7 |
2 files changed, 38 insertions, 13 deletions
@@ -5,7 +5,7 @@ '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: exec.n,v 1.5 2000/09/07 14:27:47 poenitz Exp $ +'\" RCS: @(#) $Id: exec.n,v 1.6 2002/04/23 19:06:10 hobbs Exp $ '\" .so man.macros .TH exec n 7.6 Tcl "Tcl Built-In Commands" @@ -197,7 +197,8 @@ the program. .sp Additionally, when calling a 16-bit DOS or Windows 3.X application, all path names must use the short, cryptic, path format (e.g., using ``applba~1.def'' -instead of ``applbakery.default''). +instead of ``applbakery.default''), which can be obtained with the +\fBfile attributes $fileName -shortname\fR command. .sp Two or more forward or backward slashes in a row in a path refer to a network path. For example, a simple concatenation of the root directory @@ -207,13 +208,34 @@ point called \fBsystem\fR on the machine called \fBwindows\fR (and the \fBc:/\fR is ignored), and is not equivalent to \fBc:/windows/system\fR, which describes a directory on the current computer. The \fBfile join\fR command should be used to concatenate path components. +.sp +.RS +Note that there are two general types of Win32 console applications: +.RS +1) CLI -- CommandLine Interface, simple stdio exchange. \fBnetstat.exe\fR for +example. +.br +2) TUI -- Textmode User Interface, any application that accesses the console +API for doing such things as cursor movement, setting text color, detecting +key presses and mouse movement, etc... An example would be \fBtelnet.exe\fR +from Windows 2000. These types of applications are not common in a windows +environment, but do exist. +.RE +\fBexec\fR will not work well with TUI applications when a console is not +present, as is done when launching applications under wish. It is desirable +to have console applications hidden and detached. This is a designed-in +limitation as \fBexec\fR wants to communicate over pipes. The Expect +extension addresses this issue when communication between a TUI application +is desired. +.sp +.RE .TP \fBWindows NT\fR . -When attempting to execute an application, \fBexec\fR first searches for the -name as it was specified. Then, in order, \fB.com\fR, \fB.exe\fR, and \fB.bat\fR -are appended to the end of the specified name and it searches for -the longer name. If a directory name was not specified as part of the +When attempting to execute an application, \fBexec\fR first searches for +the name as it was specified. Then, in order, \fB.com\fR, \fB.exe\fR, and +\fB.bat\fR are appended to the end of the specified name and it searches +for the longer name. If a directory name was not specified as part of the application name, the following directories are automatically searched in order when attempting to locate the application: .sp @@ -233,16 +255,16 @@ The directories listed in the path. .RE .sp In order to execute the shell builtin commands like \fBdir\fR and \fBcopy\fR, -the caller must prepend ``\fBcmd.exe /c\0\fR'' to the desired command. +the caller must prepend ``\fBcmd.exe /c\0\fR'' to the desired command. .sp .RE .TP \fBWindows 95\fR . -When attempting to execute an application, \fBexec\fR first searches for the -name as it was specified. Then, in order, \fB.com\fR, \fB.exe\fR, and \fB.bat\fR -are appended to the end of the specified name and it searches for -the longer name. If a directory name was not specified as part of the +When attempting to execute an application, \fBexec\fR first searches for +the name as it was specified. Then, in order, \fB.com\fR, \fB.exe\fR, and +\fB.bat\fR are appended to the end of the specified name and it searches +for the longer name. If a directory name was not specified as part of the application name, the following directories are automatically searched in order when attempting to locate the application: .sp diff --git a/doc/tclvars.n b/doc/tclvars.n index 4503add..ea99b4c 100644 --- a/doc/tclvars.n +++ b/doc/tclvars.n @@ -5,7 +5,7 @@ '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: tclvars.n,v 1.11 2002/02/15 14:28:48 dkf Exp $ +'\" RCS: @(#) $Id: tclvars.n,v 1.12 2002/04/23 19:06:10 hobbs Exp $ '\" .so man.macros .TH tclvars n 8.0 Tcl "Tcl Built-In Commands" @@ -43,7 +43,10 @@ capitalization are converted automatically to upper case. For instance, the PATH variable could be exported by the operating system as ``path'', ``Path'', ``PaTh'', etc., causing otherwise simple Tcl code to have to support many special cases. All other environment variables inherited by -Tcl are left unmodified. +Tcl are left unmodified. Setting an env array variable to blank is the +same as unsetting it as this is the behavior of the underlying Windows OS. +It should be noted that relying on an existing and empty environment variable +won't work on windows and is discoraged for cross-platform usage. .VE .RE .RS |