Question

我有一个client.exe可执行文件，它将用以＆＃34; autoupdate-client.exe开头的文件替换自己。例如：如果client.exe运行且autoupdate-client.exe在同一文件夹中，则程序将删除client.exe并将autoupdate-client.exe重命名为client.exe。以下代码在widows中实现：

if {[regexp -nocase \
"autoupdate-(.*)" \
[file tail [info nameofexecutable]] - binaryname]} {
after 5000
set dirname [file dirname [info nameofexecutabe]
set targetname [file join $dirname $binaryname]
catch {vfs::mk4::Unmount exe [info nameofexecutable]]
file copy -force [infor nameofexecutable] $targetname
catch {file attributes $targetname -permission 0755}
exec $targetname {*}$argv &
exit 0
} else {
set dirname [file dirname [infor nameofexecutable]
set targetname [file join $dirname \
"autoupdate-[file tail [info nameofexecutablle]]}\
]
if {[file exists $targetname]} {

5000之后 catch {file delete -force $ targetname}

我收到以下错误：

error copying "autoupdate-client.exe" to "client.exe": permission denied
while executing "
file copy -force [info nameofexecutable] $targetname"

我怀疑文件属性$ targetname -permission 0755发出错误。我想知道如何在Windows中授予权限

Answer 1

对于Windows，您需要执行以下步骤：

C:\Users\bll\Desktop\BallroomDJ\windows\64\tcl\bin>copy tclsh.exe t1.exe
        1 file(s) copied.
C:\Users\bll\Desktop\BallroomDJ\windows\64\tcl\bin>copy tclsh.exe t2.exe
        1 file(s) copied.
C:\Users\bll\Desktop\BallroomDJ\windows\64\tcl\bin>.\t1.exe
% file rename -force t1.exe t1-old.exe
% file rename -force t2.exe t1.exe
% file delete -force t1-old.exe
error deleting "t1-old.exe": permission denied
% exit
C:\Users\bll\Desktop\BallroomDJ\windows\64\tcl\bin>dir t*.exe
 Directory of C:\Users\bll\Desktop\BallroomDJ\windows\64\tcl\bin
2017-10-23  10:37           453,579 t1-old.exe
2017-10-23  10:37           453,579 t1.exe
2017-10-23  10:37           453,579 tclsh.exe
C:\Users\bll\Desktop\BallroomDJ\windows\64\tcl\bin>

无法保证此时可以删除旧的可执行文件。您可能需要稍后将其删除。

file attributes

编辑：

Windows没有执行权限的概念。 {{1}}命令可能没有按照您的想法进行。

在TCL中使用文件属性授予文件权限

1 个答案: