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Piping in a file on the command-line using System.Diagnostics.Process
(3 answers)
Closed 2 years ago.
I have created the mysql database dump file(utf8) successfully with this:
ProcessStartInfo psi = new ProcessStartInfo();
psi.FileName = Application.StartupPath + "\\mysqldump.exe";
psi.RedirectStandardInput = false;
psi.RedirectStandardOutput = true;
psi.Arguments = "-r D:\\backup.sql --user=root --password=1234 --opt databasename";
psi.UseShellExecute = false;
Process process = Process.Start(psi);
process.WaitForExit();
process.Close();
I am able to restore the utf8 dump file into database successfully by using windows CMD with this single line command:
mysql.exe -u root --password=1234 databasename < d:\backup.sql
but, I failed to execute the command in C#. Could you please advice me where is gone wrong. Thanks you very much. Below are my commands:
ProcessStartInfo psi = new ProcessStartInfo();
psi.FileName = Application.StartupPath + "\\mysql.exe";
psi.RedirectStandardInput = false;
psi.RedirectStandardOutput = false;
psi.Arguments = "--user=root --password=1234 databasename < D:\\backup.sql";
psi.UseShellExecute = true;
Process process = Process.Start(psi);
process.WaitForExit();
process.Close();
Are you sure that your C# exe is executed in the same directory where MySQL is installed? If you are running from your commandline at c: the FileName would be C:\mysqldump.exe. I doubt it's lying there. If mysqldump.exe is in the path you'd probably won't need to append the Application.StartupPath or any other path...
You might want to leave out the database name in the restore. since you created the dump file with a DB name it doesn't need and may not like the database name you provided. I know it ran at the command line, so that may not be it, but the syntax i saw was
psi.Arguments = "--user=root --password=1234 < D:\backup.sql";
If the database already exists were you want to restore it, you may need to use
mysqlimport -u [uname] -p[pass] [dbname] [backupfile.sql]
I also noticed you used psi.RedirectStandardOutput = false; in the restore where it was true in the backup. you are not using the output so they should likely both be false.
if that all fails, if you can include the error you are getting on the restore that may be helpful
Related
I need to run a bunch of commands in C# in order for my program to run correctly. Previously, this script ran flawlessly and I used to get the desired output my program needs in order to compile and run correctly.
This is the script I have currently
Process cmd = new Process();
cmd.StartInfo.FileName = "cmd.exe";
cmd.StartInfo.Arguments = #"/C mkdir C:\IL & del Output.il & cd C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6.1 Tools & ildasm /out=C:\IL\Output.il " + filePath;
cmd.StartInfo.UseShellExecute = false;
cmd.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
cmd.StartInfo.RedirectStandardOutput = true;
cmd.StartInfo.CreateNoWindow = true;
cmd.StartInfo.RedirectStandardError = true;
cmd.Start();
Filepath is a parameter I pass back to this method. This parameter contains the file's URL.
When the filepath is loaded into the application now, this set of commands does not run whatsoever. There is no output file or anything. However, these commands run when I enter them manually into Command Prompt.
I've tried this process from this answer, and implemented the following code to try and get this batch file to work.
ProcessStartInfo cmd = new ProcessStartInfo( "cmd", #"/C mkdir C:\IL & del Output.il & cd C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6.1 Tools & ildasm /out=C:\IL\Output.il" + filePath );
cmd.CreateNoWindow = true;
cmd.UseShellExecute = false;
Process.Start( cmd );
The above method hasn't worked out, and the other posts on here have the same code as my own script, which doesn't help at all.
Is there anything wrong with my script? Or is there a setting that I can enable in Visual Studio?
Thanks for viewing
i am performing offline operations on images taking image as a input with parameters and processing it in VTK C++ exe i am unable to pass parameters to C++ exe through C# program and retrive output .
please explain me with some example
If you just mean that you have a compiled C++ program (which we'll call "foo.exe", with path stored in string "exe_folder") and you want to call that with command line parameters (stored in string "exe_params") from C#, then the following should work:
string exe_params = "target_image.jpeg HOUGH_TRANSFORM"; // Or whatever params are appropriate.
string exe_full_path = Path.Combine(exe_folder, "foo.exe");
Process proc = System.Diagnostics.Process.Start(exe_full_path, exe_params);
https://msdn.microsoft.com/en-us/library/h6ak8zt5(v=vs.110).aspx
Let say that your executable is called test.exe and it is in the test dir. For me, the following would be working:
Process process = new Process();
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.WindowStyle = ProcessWindowStyle.Hidden;
startInfo.FileName = "cmd.exe";
startInfo.Arguments = "/C cd C:\\..test\\ && test.exe target_image.jpg yourtransformation";
process.StartInfo = startInfo;
process.Start();
If you have further problems, try setting the working directory of processStartInfo.
I am trying to delete a directory using C#. The first method I tried was
Directory.Delete(#"C:\Program Files (x86)\Qmuzki32");
I get an exception stating that the directory is not empty. I then found a cmd command which I can use to delete the directory quietly regardless of the fact that the directory is empty or not. I ran the following command in cmd:
rmdir /s /q "C:/Program Files (x86)/Qmuzik32"
This worked and did exactly what I wanted it to do. With my first attempt I tried building this command into a C# process like so:
if (Directory.Exists(#"C:\Program Files (x86)\Qmuzik32"))
{
string sQM32Folder = #"C:\Program Files (x86)\Qmuzik32";
Process del = new Process();
del.StartInfo.FileName = "cmd.exe";
del.StartInfo.Arguments = string.Format("rmdir /s /q \"{0}\"", sQM32Folder);
del.WaitForExit();
}
This did not work and then I tried it like this:
if (Directory.Exists(#"C:\Program Files (x86)\Qmuzik32"))
{
string sQM32Folder = #"C:\Program Files (x86)\Qmuzik32";
Process del = new Process();
del.StartInfo.FileName = "rmdir.exe";
del.StartInfo.Arguments = string.Format("/s /q \"{0}\"", sQM32Folder);
del.WaitForExit();
}
Same problem. I get the exception:
No process is associated with this object.
I do think I am on the right track; maybe the code above just requires some tweaking.
Just use Directory.Delete(string, bool).
While the low-level filesystem APIs of course require you to make sure the directory is empty first, any half-decent framework abstracting them allows you do do a recursive delete. In fact, existence of such a method would be the first thing I'd check before even trying to resort to external programs.
If you want to use the cmd way you can use this:
ProcessStartInfo Info = new ProcessStartInfo();
Info.Arguments = "/C rd /s /q \"C:\\Program Files (x86)\\Qmuzik32\"";
Info.WindowStyle = ProcessWindowStyle.Hidden;
Info.CreateNoWindow = true;
Info.FileName = "cmd.exe";
Process.Start(Info);
del.Start();
del.WaitForExit();
you didn't start the procces so it doesn't have a PID so it dies
i have searched and read about issues with psexec.exe from sysinternals not working properly with c# and stdout. i am now trying to figure out how to just call a batch file that has the following instead of using System.Diagnostics.Process to call psexec:
test.bat contains the following line:
psexec.exe \\hostname -u user -p password ipconfig /all >c:\test.txt
test.txt will be saved on the host where i am running my c sharp app and executing psexec.
when i execute the following:
System.Diagnostics.Process psexec_run = new System.Diagnostics.Process();
psexec_run.StartInfo.FileName = "cmd.exe";
psexec_run.StartInfo.Arguments = #"/c """ + cur_dir + #"\test\test.bat""";
psexec_run.StartInfo.UseShellExecute = false;
psexec_run.Start();
psexec_run.WaitForExit();
i see the cmd window pop up and it runs something but not sure what and goes away.
if i execute the following:
System.Diagnostics.Process psexec_run = new System.Diagnostics.Process();
psexec_run.StartInfo.FileName = cur_dir + "\\test\\psexec.exe";
psexec_run.StartInfo.Arguments = #"\\hostname -u user -p password ipconfig /all";
psexec_run.StartInfo.UseShellExecute = false;
psexec_run.Start();
psexec_run.WaitForExit();
then i see the command window open and it runs psexec which takes quite a few secs and i quickly see my output i need, but i have no way of capturing the output or writing it to a file.
i guess my issue now is since psexec will not work with stdout how can i capture the output from the psexec command to write it to a file???
see the following link for the issues with psexec, the last reply on this url mentioned a way to write the process output to a file without using stdout, i'm newbie to c# i can't figure out how to write process output without use stdout :(
http://forum.sysinternals.com/psexec-fails-to-capture-stdout-when-launched-in-c_topic19333.html
based on response below i tried the following:
ProcessStartInfo psi = new ProcessStartInfo(cur_dir + "\\test\\psexec.exe", #"\\hostname -u user -p password ipconfig /all");
psi.RedirectStandardOutput = true;
psi.RedirectStandardError = true;
psi.UseShellExecute = false;
Process p = Process.Start(psi);
StreamReader myStreamReader = p.StandardOutput;
// Read the standard output of the spawned process.
string sOutput = myStreamReader.ReadToEnd();
i did ReadToEnd so i would make sure it got all the output, it DID NOT!! for some reason it only go the first line of ipconfig output that was it. Also the cmd window it opened up never closed for some reason. even with CreateNoWindow=true the code just hangs. so again something is wrong with psexec and stdout i think?? as i can run this code just fine using ipconfig /all command on the local host and not use psexec...
again i am looking to avoid stdout and somehow find a way to get the output from this command or unless there is something else i'm over looking? also, not to make more work for anyone, but if you d/l psexec.exe from sysinternals and test it with a command on a remote host you will see. i have spent 2 days on this one :( trying to figure out how to use psexec or find some other quick method to execute remote command on a host and get ouptput.
UPDATE:
i gave up on psexec in c# code, i saw many posts about psexec eating the output, having a child window process ,etcc
until my head hurt :) so i am trying to run a batch file and output to a file and it's not making sense...
i have a batch file test.bat with the following
psexec.exe \\\hostname -u name -p password ipconfig /all >c:\test.txt
when i run the following code:
ProcessStartInfo psi = new ProcessStartInfo(cur_dir + #"\test\test.bat");
psi.RedirectStandardOutput = true;
psi.RedirectStandardError = true;
psi.UseShellExecute = false;
Process p = Process.Start(psi);
p.WaitForExit();
the cmd windows comes and goes really quickly and the test.txt file is created but is 0 bytes no info in it.
so if i run the batch file in a windows cmd line with the psexec command it works perfectly fine!!???
so then to verify psexec was the issue i changed the batch file to:
ipconfig /all >c:\test.txt
i execute my code above and it works fine creates the output in the test.txt file..???!!!!
why is not working with psexec am i missing something? if it's psexec, does anyone have
any recommendations for how i can execute a command on a remote windows host and get me the
output???
I have an answer to this problem that has worked for me.
Hopefully someone else will find it useful.
I have literally just spent the last two hours tearing my hair out with this. The psexec tool runs completely fine using a normal command prompt but when attempting to redirect the streams it truncates the output and you only get half output back.
In the end how I fixed my issue was a little bit of a hack. I piped the output of the command to a text file and read it back in to return it from the function.
I also has to set UseShellExecute to true. Without this it still wouldn't work. This had the unfortunate side effect of showing the console window. To get around that I set the window style to be hidden and hey presto it works!!!
Heres my code:
string ExecutePSExec(string command)
{
string result = "";
try
{
string location = AppDomain.CurrentDomain.BaseDirectory;
// append output to file at the end of this string:
string cmdWithFileOutput = string.Format("{0} >{1}temp.log 2>&1", command,location );
// The flag /c tells "cmd" to execute what follows and exit
System.Diagnostics.ProcessStartInfo procStartInfo = new System.Diagnostics.ProcessStartInfo("cmd", "/c " + cmdWithFileOutput);
procStartInfo.UseShellExecute = true; // have to set shell execute to true to
procStartInfo.CreateNoWindow = true;
procStartInfo.WindowStyle = ProcessWindowStyle.Hidden; // as a window will be created set the window style to be hiddem
System.Diagnostics.Process proc = new System.Diagnostics.Process();
proc.StartInfo = procStartInfo;
proc.Start();
proc.WaitForExit();
// now read file back.
string filePath = string.Format("{0}temp.log", location);
result = System.IO.File.ReadAllText(filePath);
}
catch (Exception objException)
{
// Log the exception
}
return result;
}
and its usage:
string command = #"psexec.exe -l -u domain\username -p password /accepteula \\192.168.1.3 netstat -a -n";
ExecutePSExec(command);
I had exactly same problem. i was getting "Windows ip config. " as first line when i run with psexec. i tried with paexec it worked well. I used Marius's code.
Note: if you dont use first cmd / c in arguments command runs only on local computer even if you define target as \\remoteserver
ProcessStartInfo psi = new ProcessStartInfo("cmd.exe");
psi.Arguments = #"cmd/c C:\paexec.exe \\\192.168.2.5 -s -u test.local\administrator -p Password1 cmd /c ipconfig";
psi.CreateNoWindow = true;
psi.RedirectStandardOutput = true;
psi.RedirectStandardError = true;
psi.UseShellExecute = false;
Process p = Process.Start(psi);
System.IO.StreamReader myStreamReader1 = p.StandardOutput;
p.WaitForExit();
string sOutput = myStreamReader1.ReadToEnd();
Are you sure your sourcecode is correct? that link is quite a bit old.. maybe its fixed!
Heres an example how to redirect the standard-output and put whole output in a string via streamreader:
ProcessStartInfo psi = new ProcessStartInfo("tftp.exe");
// preferences for tftp process
psi.CreateNoWindow = true;
psi.RedirectStandardOutput = true;
psi.RedirectStandardError = true;
psi.UseShellExecute = false;
Process p = Process.Start(psi);
StreamReader myStreamReader = p.StandardOutput;
p.WaitForExit();
// Read the standard output of the spawned process.
string sOutput = myStreamReader.ReadToEnd();
i found a solution. apparently psexec is NOT going to work in c sharp. so i came up with some wmi code to connect to a remote host and it's working PERFECTLY!!! :)
i used microsoft's WMICodeCreator.exe to create wmi code for C# for the process method on a remote host, wow that tool is amazing because wmi code is little confusing to me.
psexec's output goes to StandardError and not StandardOutput. I don't know why it is that way. Following code snippet access it.
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.RedirectStandardError = true;
Process process = new Process();
process.StartInfo = startInfo;
process.Start();
process.WaitForExit();
errors = process.StandardError.ReadToEnd();
process.Close();
Hey all,
I'm trying to run an exe file ON A REMOTE MACHINE (not from, but ON).
I have very simple code as following:
ProcessStartInfo info = new ProcessStartInfo("C:\\PsTools");
info.FileName = "psexec \\\\" + machine.Name + "\\C\\Program Files\\test.exe";
info.RedirectStandardOutput = true;
info.UseShellExecute = false;
Process p = Process.Start(info);
When trying to run this code i get "The system cannot find the file specified" error.
There is a file named "test.bat" on the specified directory.
The remote machine is on the same domain and the C folder is shared (I'm the admin).
I have PsTools installed and configured as environment variables.
I have tried variety of codes (for example if i don't use "psexec" on the ProcessStartInfo constructor and on the FileName property, the bat file runs on the local machine instead of the remote one...) and nothing works!
any ideas?
My guess is that it's failing to find psexec, because you've set UseShellExecute to false. Try giving the full path to psexec.exe.
You should also set the FileName property to just the file you want to start, and the Arguments property to the command line arguments, like this:
ProcessStartInfo info = new ProcessStartInfo("C:\\PsTools");
info.FileName = #"c:\whatever\psexec.exe";
info.Arguments = #"""\\" + machine.Name + #"\C\Program Files\test.exe""";
info.RedirectStandardOutput = true;
info.UseShellExecute = false;
Process p = Process.Start(info);
Note that I've also added double quotes in the Arguments property so that it doesn't get split into two arguments due to "Program Files" having a space in it.