Execute system command line instructions

Hi,
suppose that my java program has to execute a system command line instrction(let's say dir/p for dos or ls * f or linux)
how can we execute these system command line instructions programmatically from within a java program?
thanks indeed for helping...

i want to thank jfbriere for the usefull link he/she provides me with. 1- He
2- You're welcome :-)

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is there any way to set the "Operating System Command Line" in the file adapter as ASMA / dynamic attribute?
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thx
holger

hi,
>>>is there any way to set the "Operating System Command Line" in the file adapter as ASMA / dynamic attribute?
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Hello,
I would like to know if there is any way by which I can call a system command through a java program . This system command takes parameters. If yes then how do i pass these paramaeters. This program will be called thru a sheel scripts and the parameters may vary...

If I just look at the question in your post, I would say the answer is to call Runtime.getRuntime().exec("the system command"). But the title of the post mentioned passing it to a server; I won't attempt to answer that without knowing what it's all about.

Executing System Commands In Java

Hi,
I am not sure if this is a bug � or I am just doing this wrong. I have
written a program to move files into ~/.trash/ . My problem is that this
works only for files without spaces � but for files with spaces it will
not work. Some of my code is below.
I have temporarily uploaded the complete file at
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System.out.println("The command would be -- " +
commandString);
try {
Process p = Runtime.getRuntime().exec(commandString);
catch (IOException e) {
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System.exit(-1);
As an example I tried � this with a file that has a space � and I get
the following output.
The command would be -- mv "/home/masca/WORK/Text File"
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Regards,
Rio

Use File.separator or simply / instead of Windows
backslashes.
- SaishI think OP is on a unix machine, and he still needs to escape the spaces. The escape character is, of course, a back-slash.
Depending on the shell (my experience is with bash), to execute the command mv Test File.txt newTest File.txt, the file names either need to be double-quoted so that the command shell will treat them as a single token (I think that will work), or the spaces need to be escaped (I know that will work). In java, to include a single \ in a literal String, you need to escape the escape character, which is why I think two \\ are needed in the String, so that one will survive to be passed on to the exec command.
� {�

Coldfusion 10: execute as command line

Using CF10 on a unix system. Attempting to use cfexecute on perl and batch files do not work but they run fine when executed directly from command line. The perl and bat file permissions are set so anyone can execute them. Does anyone know if I make coldfusion execute the perl or bat file as if it was running as a command line? May need to designate specific user the execute them as.
<cfexecute name="#EDRSDIR#/uploadconvertwrapper.pl" arguments="#filedirectory# #finalfilename# #dcnflag# #splflag# outputFile="/dev/null" timeOut="0" />
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What about:
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dropping the .pl and .bat extensions;
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Executing system commands query

I'm only just starting to program Java although I do have a good grounding in programming other languages so it is probably more a question of familarity, but hopefully someone can answer this problem I am having.
What I am trying to do is to execute TFTP on a Windows NT machine roughly every 5 seconds to get a file. To do this I have created a thread and within "public void run" I have a loop which contains something along the lines of:
Runtime.getRuntime().exec( "C:\\WINNT\\system32\\tftp.exe <ipaddress> get <filename>" );
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The good news is it fetches the file every few seconds as I wanted. The bad news is it creates a new TFTP process each time and so it keeps using more and more memory.
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If possible can anyone mail me directly. Thanks in advance.
Mark.

No I must quite specifically use TFTP. The scenario is information is entered via a FORM on a web page. The data is passed from the client to a server where I parse it using perl and write out the data in the necessary form to a file.
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Using TFTP I can call it with a command line function to invoke TFTP to connect and fetch a file in one line. This seems much simpler using an existing executable than hand crafting code to do the same job.
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Thanks for the suggestion though. I will have a look just out of curiosity now.
Mark.

How to execute System command through Applet

Hi all,
How can I execute a System command through Applet.
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     at sun.plugin.navig.motif.MotifAppletViewer.maf_run(MotifAppletViewer.java:123)
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Manoj.

There should be a lesson about this somewhere.
When you visit a web page, does it ask you if you want to have an applet loaded?
Answer: No
So, if you visit a page, and an applet is silently loaded which can then execute commands on your computer, is this good?
Answer: No
So why do you want to do this?
Is it good for anyone?
I mean, if I want to do "ls", can't I just open a command line? Do I need an applet to do it for me?
Either you have devious desires or your hacking together something that probably shouldn't be.
If you want to learn start here:
http://java.sun.com/docs/books/tutorial/security1.2/index.html
With the article entitled:
Quick Tour of Controlling Applets
Ian

Executing multiple command lines in command prompt (windows)

Hi,
I am currrently using the command prompt in the windows to try to send a command to the microcontroller that is connected through TCP connection.
I am able to use the normal cmd.exe to send the command but am unable to send all the command successfully using labview.
The Vi. that I am using the the system exec.vi found in labview connectivity section.
Basically what I want to send is "telnet A1" in the cmd.exe to establish connection to the microcontroller, followed by "FOR A1 100 GO" which will be intepreted by the microcontroller to make the necessary motion. But currently, the problem is that I can only establish connection using the system exec.vi but am unable to send the second part of the message "FOR A1 100 GO".
My command line i tried typing is cme.exe /K telnet A1 & FOR A1 100 GO. it seems that labview is only able to execute the first command part. Is there any other alternatives?
Thanks everyone for your help.
Solved!
Go to Solution.

Hi,
Thanks for the help, the picture shows 1 of the error which state Error 56, the error occurs occasionally whenever I have used the command prompt to send a message to the microcontroller.
Alternatively, there are times when no errors occur but my microcontroller does not move as well. It does move if I were to send the command through the cmd prompt.
And I have attached a picture of my program as well. I am currently using Labview 2010 32bit. Thanks.
Jh
Attachments:
TCP Connection.jpg ‏170 KB
Error56.png ‏222 KB
Picomotor_App New v3.0.vi ‏38 KB

Launch executable with command line arguments

I have a programmer that I need to launch in my cvi code. I tried the system command and lauchexecutable command but cannot get the programmer to lauch correctly. If I run it from the command prompt or create a windows shortcut it works fine. Here is the shortcut I created:
C:\TPD\SAVS20P3\asix\up\up.exe /e c:\tpd\savs20p3\q33.hex/erase /q /p
I'm trying to run the up.exe software with /e c:\tpd\v20_hex\v20.hex /erase /q /p as the command line paramters.
I tried the following code which created the above path with command line
strcpy(filename,"C:\\tpd\\savs20p3\\asix\\up\\up.exe /e c:\\tpd\\savs20p3\\hex_ee\\"); ///e c:\\tpd\\savs20p3\\hex_ee\\"");
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strcat(filename, "/q /p");
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any suggestions. I beieve its a simple syntax error.

Well, apart evident typos in the code you posted, which is not creating the command line you stated, I can only think that before "/q" you should add a space to separate the option from the filename.
This code should create the correct command line:
strcpy (hfile, "c:\\tpd\\v20_hex\\v20.hex");
strcpy (filename, "C:\\tpd\\savs20p3\\asix\\up\\up.exe /e ");
strcat (filename, hfile);
strcat (filename, " /erase /q /p");
Proud to use LW/CVI from 3.1 on.
My contributions to the Developer Zone Community
If I have helped you, why not giving me a kudos?

How to execute system command from java program

Hi all,
I want to change directory path and then execute bash and other unix commands from a java program. When I execute them separately, it's working. Even in different try-catch block it's working but when I try to incorporate both of them in same try-catch block, I am not able to execute the commands. The change directory command works but it won't show me the effects of the bash and other commands.
Suggestions??

The code I am using is....
try
String str="cd D:\\Test";
Process p=Runtime.getRuntime().exec("cmd /c cd
"+str);your str string is already having cd in it but again you ar giving cd as part of this command also please check this,i will suggest you to remove cd from str
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catch(IOException e)
System.err.println("Error on exec() method");
e.printStackTrace();
Message was edited by:
ragas

Execute Process Task :Executing DOS Command lines in Execute Process Task

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binary
open username@hostname
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Hi ConnectDebz,
According to your description and script example, do you use WinSCP.exe to perform the SFTP files transfer? If so, you should set the Executable of the Execute Process Task to the path of the WinSCP.exe, save the script in a .txt file and set the Argument
of the Execute Process Task like “/script=C:\Temp\sftploader.txt” (without quotes).
References:
http://www.sqlservergeeks.com/blogs/raunak.jhawar/sql-server-bi/395/sql-server-sftp-with-ssis-execute-process-task
http://gregcaporale.wordpress.com/2012/02/23/using-sftp-in-sql-server-ssis/
Regards,
Mike Yin
If you have any feedback on our support, please click
here
Mike Yin
TechNet Community Support

Unable to execute a command line command using Java

I am trying to run a command to add a group name. It is executed in command prompt of Windows 2003/2000
Say this is the command I want to execute:
net localgroup LordSM /add
Here LordSM is the group name.
I wrote the following code but it does not seem to work. Please suggest.
String ABC=Value1TextField.getText();
Value2Label.setText("Value is now " + ABC);
// Above is to get value from a JText Field
// Below is the code to run command for adding a group name to a System.
String ExecutedCmd = "net localgroup " + ABC + "/add";
Process p = Runtime.getRuntime().exec(ExecutedCmd);
BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));
BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));
// read the output from the command
System.out.println("Here is the standard output of the command:\n");
while ((s = stdInput.readLine()) != null)
{ System.out.println(s); }
// read any errors from the attempted command
System.out.println("Here is the standard error of the command (if any):\n");
while ((s = stdError.readLine()) != null)
{ System.out.println(s); }
I am trying to run a command to add a group name. It is executed in command prompt of Windows 2003/2000
Say this is the command I want to execute:
net localgroup LordSM /add
Here LordSM is the group name.
I wrote the following code but it does not seem to work. Please suggest.
String ABC=Value1TextField.getText();
Value2Label.setText("Value is now " + ABC);
// Above is to get value from a JText Field
// Below is the code to run command for adding a group name to a System.
String ExecutedCmd = "net localgroup " + ABC + "/add";
Process p = Runtime.getRuntime().exec(ExecutedCmd);
BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));
BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));
// read the output from the command
System.out.println("Here is the standard output of the command:\n");
while ((s = stdInput.readLine()) != null)
{ System.out.println(s); }
// read any errors from the attempted command
System.out.println("Here is the standard error of the command (if any):\n");
while ((s = stdError.readLine()) != null)
{ System.out.println(s); }
It does not seem to work means, that no Standard Error is defined, when it executes and group name is not added as well. The following is JUnit Test Result: Hope it gives a better idea of the problem I am facing:
compile:
run:
Here is the standard output of the command:
Here is the standard error of the command (if any):
The syntax of this command is:
NET LOCALGROUP [groupname [/COMMENT:"text"]] [DOMAIN]
groupname {ADD [/COMMENT:"text"] | /DELETE} [DOMAIN]
groupname name [...] {ADD | /DELETE} [DOMAIN]
Got it
BUILD SUCCESSFUL (total time: 10 minutes 49 seconds)
I had even tried this:
Runtime rt =Runtime.getRuntime();
String[] cmd = new String[3];
cmd[0] = "cmd.exe";
cmd[1]="net localgroup";
cmd[2] =ABC + "/add";
rt.exec(cmd);
but again, it does not give any error as such, but it does not create the group name either. Please suggest. We can see the group names that are added on right clicking My Computer Icon and click Manage and then go to User & Group section. On executing either of the code nothing happens.
Thanks

Duplicate post:
http://forum.java.sun.com/thread.jspa?threadID=5203526&messageID=9812067#9812067

Executing system commands and capturing results

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Execute system command line instructions

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