request about scp command (QProcess) using qt

hlowd

@hlowd

I entered two words in the post, but only one is displayed on the screen...

jsulm

@hlowd said in request about scp command (QProcess) using qt:

I entered two words in the post, but only one is displayed on the screen...

Use code tags properly, then it will be shown correctly

hlowd

@hlowd

listArguments << "D:\\SVN\\Work\\test\\a.ini" << "user@192.168.1.250:/home/user/SW/";

Even though I entered it like this, it is the same.
The response from start comes immediately, but the readOutput function is not called.

jsulm

@hlowd said in request about scp command (QProcess) using qt:

but the readOutput function is not called

Probably because you're deleting m_process right after waitForFinished.
Are you sure scp.exe command is found?
Try with an absolute path to scp.exe to make sure it is actually found.

hlowd

@hlowd

The symptom is the same even if delete is not called.

If it is a command instruction rather than a code, the instruction will be executed normally.
The file is moved normally. (Windows -> Linux)

jsulm

@hlowd Again: try with absolute path to scp.exe

hlowd

@hlowd
There are files in that path.

C:\Windows\WinSxS\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb

scp.exe
ssh-add.exe
ssh-agent.exe
ssh-keygen.exe

// new code

QString strParam = "C:\\Windows\\WinSxS\\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb\\scp.exe";

// error message

"CreateProcessW failed error:2 posix_spawn: No such file or directory"

JonB

@hlowd
If you want help on this, at least for my part, please make the effort to enclose your code blocks and literal extracts in the forums block quotes (</> button) as we have asked several times. It does not require much effort on your side.

By now you should be trying a command of scp, nothing else, no arguments, to verify that (a) it is found and can be run and (b) you can successfully read any output from it, e.g. presumably a "usage" message in this case.

jsulm

@hlowd said in request about scp command (QProcess) using qt:

Can I do it this way?

Yes, just try.
I would also execute scp using this absolute path in a terminal to make sure it works.

hlowd

@jsulm

There are files in that path.

C:\Windows\WinSxS\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb

scp.exe
ssh-add.exe
ssh-agent.exe
ssh-keygen.exe

// new code

QString strParam = "C:\\Windows\\WinSxS\\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb\\scp.exe";

// error message

"CreateProcessW failed error:2 posix_spawn: No such file or directory"

The same error occurs in the command prompt.

JonB

@hlowd
I am not a total Windows expert, but I did not think you should ever attempt to run anything in the WinSxS area? You should be running the scp which is on your PATH (presumably).

jsulm

@hlowd Did scp executable ever work for you in terminal? The path where it is located looks strange, don't know from where it comes. On my machine I have it here: c:\windows\System32\OpenSSH\scp.exe

You can check where your scp.exe is located using this command:

where scp

hlowd

@jsulm

The scp.exe file exists in that path.

C:\Windows\System32\OpenSSH

I don't know why I couldn't find it using Explorer search.

jsulm

@hlowd said in request about scp command (QProcess) using qt:

The scp.exe file exists in that path

Does it work with this path?

hlowd

This post is deleted!

hlowd

@jsulm
No, it doesn't work..

JonB

@hlowd
This really should not be too difficult to diagnose, if you stick to what is suggested and report behaviour.

First try both of

scp
\full\path\to\scp

in a Command Prompt. I assume at least one "works", and produces a "usage" output message?

Whichever produces the message, now try from a Qt program

QProcess proc;
proc.start(".....");    // here try whichever worked in Command Prompt
qDebug() << proc.waitForFinished();
qDebug() << proc.readAll();

and report output.

hlowd

@JonB

it works(data is output)

output 1 : true
output 2 : "\r\nWindows IP ....."

QProcess proc;
proc.start("ipconfig /all");
qDebug() << "output 1 : " << proc.waitForFinished();
qDebug() << "output 2 : " << proc.readAll();

do not Working

output 1 : false
output 2 : ""

QProcess proc;
proc.start("scp C:\\Users\\user\\a.ini user@192.168.1.250:/home/user/SW/");
qDebug() << "output 1 : " << proc.waitForFinished();
qDebug() << "output 2 : " << proc.readAll();

this is also do not working

output 1 : false
output 2 : ""

QProcess proc;
    proc.start("C:\\Windows\\System32\\OpenSSH\\scp.exe C:\\Users\\user\\a.ini user@192.168.1.250:/home/user/SW/");
    qDebug() << "output 1 : " << proc.waitForFinished();
    qDebug() << "output 2 : " << proc.readAll();

jsulm

@hlowd Could you please read QProcess documentation?!
The way you're using QProcess is wrong: all parameters should be part of arguments list. And what about adding error handling as already suggested?

Pl45m4

@hlowd said in request about scp command (QProcess) using qt:

proc.start("scp C:\Users\user\a.ini user@192.168.1.250:/home/user/SW/");

You need argument list for QProcess
The whole statement in start wont work.

Here in your similar topic is an example by @ChrisW67 and me..

https://forum.qt.io/topic/152140/shellexecute-사용-관련-문의