I'm new to writing Windows batch file. I have the following batch file to start a new javaw process and redirect the output of the commands in the batch file to a log file.
#echo OFF
call :sub >start-demo.jar.cmd.log
exit /b
:sub
echo starting demo.jar ..
start "" javaw -jar demo.jar
echo done ..
It's working fine and I can see that the output is redirected correctly to the log file and the javaw process is also started with a new process id when I execute the batch file.
Here is the output redirected to the log file after the batch file is executed.
starting demo.jar ..
done ..
However, when I try to edit or delete the log file after the batch file is executed, it says that the action can't be completed because the file is open in Java(TM) Platform SE binary.
Only after killing the javaw process I'm able to edit or delete the log file.
Not sure why this is happening and how to fix this. My expectation is that once the javaw process is started successfully, I should be able to edit or delete the log file. Is this correct?
My OS is Windows 10 Enterprise 64 bit.
Related
I would expect the below code to open up in the C:\Users\zjafri\Desktop\Arthur\Runner2 directory when running this bat file, but instead it opens up to my desktop directory.
Does somebody have an idea why?
%windir%\system32\cmd.exe "/K" C:\ProgramData\Anaconda3\Scripts\activate.bat C:\ProgramData\Anaconda3
CD C:\Users\zjafri\Desktop\Arthur\Runner2
The console output is:
C:\Users\zjafri\Desktop>C:\windows\system32\cmd.exe "/K" C:\ProgramData\Anaconda3\Scripts\activate.bat C:\ProgramData\Anaconda3
(base) C:\Users\zjafri\Desktop>
The used command lines are wrong for the wanted behavior which is activating Anaconda environment with making a specific directory the current directory and keep the command process running for entering manually more commands to execute.
A batch file is a script. A script needs a script interpreter executable. The interpreter for Windows batch files is the Windows command processor cmd.exe which is with full qualified file name %SystemRoot%\System32\cmd.exe or %ComSpec%. SystemRoot and ComSpec are two predefined Windows Environment Variables.
Windows command processor halts the processing of a batch file on starting an executable until the started executable terminated itself.
What does happen on cmd.exe instance processing the batch file executes the following command line?
%windir%\system32\cmd.exe "/K" C:\ProgramData\Anaconda3\Scripts\activate.bat C:\ProgramData\Anaconda3
Windows command processor starts one more command process to process the other batch file and keeps running after batch file execution finished because of option /K enclosed uselessly in double quotes. So the started second instance of cmd.exe does not terminate itself. For that reason the first instance of cmd.exe waits and waits and waits for termination of second instance of cmd.exe before it continues processing the batch file with reading the next command line.
Therefore the command line CD C:\Users\zjafri\Desktop\Arthur\Runner2 is executed by first command process only when the user typed exit in second command process to terminate second cmd.exe instance.
One solution would be the usage of following command lines in a batch file:
call "C:\ProgramData\Anaconda3\Scripts\activate.bat" "C:\ProgramData\Anaconda3"
cd /D "%UserProfile%\Desktop\Arthur\Runner2"
This batch file results in executing the batch file activate.bat, next is executed command CD and then processing of batch file is finished.
What happens next depends on how the batch file was started. If just a double click was made on the batch file, Windows called cmd.exe with using implicit option /C to execute the batch file and then close the command process. So on double clicking the batch file, a console window opens, the two command lines are executed and the console window closes as cmd.exe terminates itself.
But if the user opened a command prompt which means starting cmd.exe with using implicit the option /K, and executes the batch file from within the command prompt window by typing its full qualified file name without or with the completion help by hitting one or more times TAB after entering just a few characters of a folder/file name, and hits RETURN or ENTER to execute the batch file, the command prompt window remains opened and Anaconda environment is activated with directory %UserProfile%\Desktop\Arthur\Runner2 being the current directory.
Well, first opening a command prompt window and manually running the batch file with full path is not really handy. The batch file could be stored with a short file name in one of the folders of which path is present in value of environment variable PATH like the Windows directory. This would make it possible to open a command prompt, type just the file name of the batch file and hit key RETURN or ENTER to execute it.
Another handy solution would be creating on user's desktop a shortcut file (*.lnk) with file name Anaconda3 on which in properties of the shortcut is configured:
Target: %SystemRoot%\System32\cmd.exe /K C:\ProgramData\Anaconda3\Scripts\activate.bat C:\ProgramData\Anaconda3
Start in: C:\Users\zjafri\Desktop\Arthur\Runner2
Comment: Opens a command prompt and activates Anaconda3 in Runner2
There are multiple advantages on using a shortcut file. A shortcut key can be defined to start Windows command processor and execute the batch file to activate Anaconda environment independent on which application has currently the input focus and if the desktop is behind an application window or in front of all other windows. On the tabs Options, Font, Layout, Colors of the shortcut properties the options and the look can be defined which should be used on using Anaconda like using a console window with more lines/columns and with a larger font as by default.
Although the usage of a shortcut file would be definitely the best solution for this use case, it is also possible to run a batch file with a double click to open a command prompt window to execute the batch file to activate Anaconda environment and keep the command process running with current directory set to wanted directory.
Such a batch file would require just one command line:
#start "Anaconda3" /D"%UserProfile%\Desktop\Arthur\Runner2" %ComSpec% /K C:\ProgramData\Anaconda3\Scripts\activate.bat C:\ProgramData\Anaconda3
In this case cmd.exe processing the batch file with this command line starts a new command process with option /K to keep the command process running after execution of the batch file by started cmd.exe with Anaconda3 as title for the new console window and with setting before starting cmd.exe the directory CD C:\Users\zjafri\Desktop\Arthur\Runner2 as current directory. cmd.exe does not wait for termination of the started second cmd.exe in this case and so the cmd.exe instance processing the batch file with this single command line terminates immediately.
The disadvantage of this batch file solution is that the user has no possibility to configure the options, font, layout, colors of the command process which keeps running after activating the Anaconda environment.
For understanding the used commands and how they work, open a command prompt window, execute there the following commands, and read entirely all help pages displayed for each command very carefully.
call /?
cd /?
cmd /?
start /?
PS: I have installed neither Anaconda nor read its documentation. So I don't know what happens on execution of C:\ProgramData\Anaconda3\Scripts\activate.bat C:\ProgramData\Anaconda3 and what is the current directory after execution of this batch file. If the batch file is good coded and the argument C:\ProgramData\Anaconda3 does not mean to change the current directory to this directory, then everything should work as written above. Otherwise the provided solutions need to be adapted depending on what activate.bat changes on environment, i.e. when it changes the current directory.
perform the cd command prior to the cmd command (concatenated) and wrap it all in a code block.
(CD C:\Users\zjafri\Desktop\Arthur\Runner2 & cmd.exe /K C:\ProgramData\Anaconda3\Scripts\activate.bat C:\ProgramData\Anaconda3)
Currently am executing a program from command prompt, basically a Python command, but I want that to be automated so that the program runs the latest version of the files before the program starts.
So current program is run by saying:
python c:\program\mysoftwareUI.py
mysoftwareUI.py is present in folder that constantly is provided with updates
Now I want to write a batch file with the above command but before that also SVN command that updates the folder before the actual program is run.
How can I do this?
Create a .bat file script and place it into a directory that is in the PATH variable or the current working directory.
=== doit.bat
#ECHO OFF
PUSHD "c:\program"
svn up
python c:\program\mysoftwareUI.py
POPD
EXIT /B
I am trying to upload a file from Windows server to third party server (I do not know OS etc. of this) through windows batch script. I am using PSFTP to upload files. It was working since a long time but since yesterday while uploading files, I am getting 'Network error: connection timed out' and batch script file control is doing further steps after file uploading step.
My requirement is whenever there is a failure to upload a file through psftp command through batch script, system should not proceed further. It should stop executing further steps.
Please let me know how to do this in Windows batch scripting?
psftp returns exit code 1 on error. So you just check the exit code and act accordingly.
To records errors, just redirect all psftp.exe output to a file.
psftp.exe -b script.txt > script.log 2>&1
if errorlevel 1 (
echo Error
) else (
echo Success
rem Other commands to perform on success
)
When I start a batch file from another batch file, it just opens a new CMD window named just "TEST.bat", and doesn't run the actual batch. Running it manually works fine.
cd %~dp0\Colours\TEST.bat
start "TEST.bat"
I have tried many different ways to run the batch, but it all does the same thing. I've also tried to run the batch as administrator but same result again.
Full code(not finished): http://pastebin.com/GE8yJP0J
To run another batch file, use call not start. Also: cd expects a directory, not a filename.
cd "%~dp0\Colours"
call TEST.bat
I have an .exe file that when run opens a cmd window that outputs a unique ID and waits for input. I have to run this .exe file on about 100 PC's to unlock their settings.
I want to run this .exe and output the ID to a text file as I don't want to have to run it manually on all machines. I have tried using a batch file but it doesn't work. What seems to be catching me is it's waiting until it receives input before it outputs to the file .
start "C:\unlock\Unlock.exe" >> ./Unlock.txt
cmd /K "C:\unlock\Unlock.exe" >> ./Unlock.txt
Attempting to feed parameters to the exe using the cmd command doesn't seem to work either.
cmd /k "C:\unlock\Unlock.exe" 11 >> ./Unlock.txt
I'm open to all suggestions for automating this. A batch file, vbs, powershell or python.
I've also tried using psexec but it does output to the cmd window I'm running the remote command from.