Runtime.getRuntime().exec(x) "Command not found"?

Hello,
I am attempting to run the following code in my java program.
System.out.println("<!> gunzip -c " + curZippedFilePath + " | tar xf - --directory " + curMovedUnzippedPath;
String unzipCommand[] = {"sh gunzip -c " + curZippedFilePath + " | tar xf - --directory " + curMovedUnzippedPath};
              Process unzipChild = Runtime.getRuntime().exec(unzipCommand);
             However, when it is run, I get the following message.
<!> gunzip -c /gnm/apache/htdocs/GNM_Data/1c02.tgz | tar xf - --directory /gnm/GNM_Autoupdate/databaseUpdate/dataDump/1c02
Exception in thread "main" java.io.IOException: java.io.IOException: gunzip -c /gnm/apache/htdocs/GNM_Data/1c02.tgz | tar xf - --directory /gnm/GNM_Autoupdate/databaseUpdate/dataDump/1c02: not found
        at java.lang.UNIXProcess.<init>(UNIXProcess.java:148)
        at java.lang.ProcessImpl.start(ProcessImpl.java:65)
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:451)
        at java.lang.Runtime.exec(Runtime.java:591)
        at java.lang.Runtime.exec(Runtime.java:464)
        at DatabaseBackUpdate.main(DatabaseBackUpdate.java:49)Why is the gunzip command not found? Also, the command works when I try it in the shell. Why doesn't it work in the Java code?

I got it!
I needed to use the following without passing an array to the exec() function.
String theCommand = "tar xfz " + curZippedFilePath + " -C " + dataDumpDir;
Process unzipChild = Runtime.getRuntime().exec(theCommand);No onto another problem : (

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PROBLEM in executing a shell command through Runtime.getRuntime().exec()

Hi all,
I was trying to execute the following code:
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import java.io.InputStream;
import java.io.InputStreamReader;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.Statement;
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* Created on Mar 13, 2007
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
* @author 195092
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
public class ClassReportDeleteDaemon {
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     public static void main(String[] args) throws Exception
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          Statement stmt = null;
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But it is giving the error "BAD OPTION -print|xargs". The command run well in shell.
Please help.
Thanking u.......

Since the pipe '|' is interpreted by the shell then you need the shell to invoke your command
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        final Process process = Runtime.getRuntime().exec(command);
You should also read http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html at least twice and implement the recommendation regarding stdout and stderr.
P.S. Why are you not using Java to find and delete these files?
Message was edited by:
sabre150

Runtime.getRuntime().exec(cmd) not working

I have created binary scrip to parse file from one format to another format and the file parser is available on Linux path and working fine when calling from command prompt but while calling this program from jsf or any any java form bean it adds some special charaters with program and throws IOException as belows
calling command
String[] cmd={"delimiter",inputFile.toString(),outputFile.toString()};
Process p=Runtime.getRuntime().exec(cmd);
it gives following error.
java.io.IOException: delimiter@! : not found
while calling this from jaav main application working fine.
any suggestion would be appriciated.
Cheers,
dharmendra

Thanks.
I printed out whatever values are being passed and it is printing the right values on console and in log file and I also tried this command in stand alone application program an working fine. but when I call it from jsf form bean it adds ^@ at the end of first parameter and says ;
IOException : delimiter^@ : not found
i actually created the same copy as delimiter^@ and put it in same path directory with 777 mode.
and now its working fine. but I did not know the reason why it change the name of first argument.
Thanks,

Strange behaviour of Runtime.getRuntime().exec(command)

hello guys,
i wrote a program which executes some commands in commandline (actually tried multiple stuff.)
what did i try?
open "cmd.exe" manually (administrator)
type "echo %PROCESSOR_ARCHITECTURE%" and hit enter, which returns me
"AMD64"
type "java -version" and hit enter, which returns me:
"java version "1.6.0_10-beta"
Java(TM) SE Runtime Environment (build 1.6.0_10-beta-b25)
Java HotSpot(TM) 64-Bit Server VM (build 11.0-b12, mixed mode)"
type "reg query "HKLM\SOFTWARE\7-zip"" returns me:
HKEY_LOCAL_MACHINE\SOFTWARE\7-zip
Path REG_SZ C:\Program Files\7-Zip\
i wrote two functions to execute an command
1) simply calls exec and reads errin and stdout from the process started:
public static String execute(String command) {
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               in = child.getErrorStream();
               while ((c = in.read()) != -1) {
                    result += ((char) c);
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     }the second function allows me to send multiple commands to the cmd
public static String exec(String[] commands) {
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          OutputStream stdin = null;
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               stderr = process.getErrorStream();
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     }so i try to execute the commands from above (yes, i am using \\ and \" in java)
(1) "echo %PROCESSOR_ARCHITECTURE%"
(2) "java -version"
(3) "reg query "HKLM\SOFTWARE\7-zip""
the first function returns me (note that ALL results are different from the stuff above!):
(1) "" <-- empty ?!
(2) java version "1.6.0_11"
Java(TM) SE Runtime Environment (build 1.6.0_11-b03)
Java HotSpot(TM) Client VM (build 11.0-b16, mixed mode, sharing)
(3) ERROR: The system was unable to find the specified registry key or value.
the second function returns me:
(1) x86 <-- huh? i have AMD64
(2) java version "1.6.0_11"
Java(TM) SE Runtime Environment (build 1.6.0_11-b03)
Java HotSpot(TM) Client VM (build 11.0-b16, mixed mode, sharing)
(3) ERROR: The system was unable to find the specified registry key or value.
horray! in this version the java version is correct! processor architecture is not empty but totally incorrect and the reg query is still err.
any help is wellcome
note: i only put stuff here, which returns me strange behaviour, most things are working correct with my functions (using the Runtime.getRuntime().exec(command); code)
note2: "reg query "HKLM\HARDWARE\DESCRIPTION\System\CentralProcessor\0" /t REG_SZ" IS working, so why are "some" queries result in ERR, while they are working if typed by hand in cmd.exe?

ok, i exported a jar file and execute it from cmd:
java -jar myjar.jar
now the output is:
(1) "" if called by version 1, possible to retrieve by version 2 (no clue why!)
(2) "java version "1.6.0_10-beta"
Java(TM) SE Runtime Environment (build 1.6.0_10-beta-b25)
Java HotSpot(TM) 64-Bit Server VM (build 11.0-b12, mixed mode)"
(3) C:\Program Files\7-Zip\
so all three problems are gone! (but its a hard way, as i need both functions and parse a lot of text... :/ )
thanks for the tip, that eclipse changes variables (i really did not knew this one...)

Runtime.getRuntime.exec() not working when Tomcat is made a windows Sevice

Hi,
I am working on a web application which launches a exe file on subitting the form. I am using Apache Tomcat 4.0.6 to run the web application. Initially Tomcat was not made a windows service on my machine and when I launch an exe it is launching without any problems. I used the following command to launch the exe file:
<code>
Process p = Runtime.getRuntime().exec("C:\\Program Files\\Mercury Interactive\\WinRunner\\arch\\wrun.exe" + strWROptions);
</code>
The above command launches WinRunner on the local machine.
without using tomcat if I just compile and run a test program with this command, the exe is launching perfectly. But, Once I made tomcat a windows service on my machine the exe is not launching.
Also, a process is being created in the windows task bar named wrun.exe once I submit the form but WinRunner is not lauching on the desktop.
Can any one please help and suggest me.
Thanks,
Ramesh

The version of Java I am using is 1.4.2. Even without
using the string array as you mentioned, the exe
(wrun.exe) is launched on my desktop if I don't run
Tomcat as a windows service. But the problem arises on
making it a service :-(
That is strange because going by the documentation what you have been using should never work. I can't test it though, I'm not on MSWindows at the moment..
Now, when I use this string array convention, I am
getting an error saying "The tool could not launch..
some error occured".
That's not a Java error message, it must come from WinRunner. This means that you have succesfully started WinRunner (great!) but something else is wrong; maybe the parameters you pass to it are incorrect.
How would you run it on the command line? Like this?wrun -t "D:\L5_QE\L5A\Initial" -create_text_report on -runThat line executes the wrun program and passes it five parameters, not three. The first parameter is "-t", the second "D:\L5_QE\L5A\Initial", the third "-create_text_report", the fourth "on", and the fifth "-run". The array of strings that corresponds to that line isString[] command = {"C:\\Program Files\\Mercury Interactive\\WinRunner\\arch\\wrun.exe",
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Running curl command from a java program using Runtime.getRuntime.exec

for some reason my curl command does not run when I run it from within my java program and errors out with "https protocol not supported". This same curl command however runs fine from any directory on my red hat linux system.
To debug the problem, I printed my curl command from the java program before calling Runtime.getRuntime.exec command and then used this o/p to run from the command line and it runs fine.
I am not using libcurl or anything else, I am running a simple curl command as a command line utility from inside a Java program.
Any ideas on why this might be happening?

thanks a lot for your response. The reason why I am using curl is because I need to use certificates and keys to gain access to the internal server. So I use curl "<url> --cert <path to the certificate>" --key "<path to the key>". If you don't mid could you please tell me which version of curl you are using.
I am using 7.15 in my system.
Below is the code which errors out.
public int execCurlCmd(String command)
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Runtime.getRuntime().exec() does not return

Hello,
I am running into a case where the call to Runtime.getRuntime.exec(command) does not return. The scenario is that the main thread spawns another thread which calls the Runtime.exec(). Since the call does not return, both threads seems to be hung. The jstack output from the main thread shows
----------------- t@2 -----------------
0xfeedab45 ___lwp_cond_wait + 0x15
0xfeb4030d void os::PlatformEvent::park() + 0xa9
0xfebadd48 void ObjectMonitor::wait(long long,bool,Thread*) + 0x26c
0xfe770287 void ObjectSynchronizer::wait(Handle,long long,Thread*) + 0xef
0xfe76ffbb JVM_MonitorWait + 0x20f
0xfb20a032 * java.lang.Object.wait(long) bci:0 (Interpreted frame)
0xfb20308d * java.lang.Thread.join(long) bci:38 line:1143 (Interpreted frame)
0xfb20308d * java.lang.Thread.join() bci:2 line:1196 (Interpreted frame)
0xfb20308d * DataLoader.checkThreadGroup() bci:92 line:316 (Interpreted frame)
0xfb202f27 * DataLoader.checkTables(int) bci:1 line:336 (Interpreted frame)
0xfb202f69 * DataLoader.runLoad(int, java.lang.String, java.lang.String, java.lang.String, com.sabre.fltsked.apm.util.FSIOHelper)
... more below ....
So it is waiting for the spawned thread on a join()
And the jstack dump for the thread that called exec() is
----------------- t@70 -----------------
0xfeed7409 __lwp_park + 0x19
0xfeed1be7 cond_wait_queue + 0x5e
0xfeed1f64 cond_wait_common + 0x1db
0xfeed20d2 condwait + 0x7b
0xfeed20fd cond_wait + 0x21
0xfeed2136 pthread_cond_wait + 0x1b
0x9741082a soft_delete_object_cleanup + 0x57
0x97410906 soft_delete_object + 0x5b
0x97410953 soft_delete_all_objects_in_session + 0x2e
0x97407b7a soft_delete_session + 0xec
0x97407860 soft_delete_all_sessions + 0x3c
0x97402525 finalize_common + 0x66
0x974026ae softtoken_fini + 0x34
0x974355f9 _fini + 0x21
0xfefdd49a remove_hdl + 0x766
0xfefd8be9 dlclose_core + 0xb1
0xfefd8c1d dlclose_intn + 0x21
0xfefd8c96 dlclose_check + 0x2a
0xfefd8d00 dlclose + 0x38
0x97480aeb pkcs11_slottable_delete + 0xb1
0x9747c691 finalize_common + 0xe2
0x9747c6e0 pkcs11_fini + 0x3e
0x9747c3bf pkcs11_fork_child + 0x73
0xfee628b8 postforkchild_handler + 0x2f
0xfeeca9ec fork + 0x12e
0xfe338029 Java_java_lang_UNIXProcess_forkAndExec + 0x395
0xfb20a032 * java.lang.UNIXProcess.forkAndExec(byte[], byte[], int, byte[], int, byte[], boolean, java.io.FileDescriptor, java.io.FileDescriptor, java.io.FileDescriptor) bci
:0 (Interpreted frame)
0xfb202f69 * java.lang.UNIXProcess.<init>(byte[], byte[], int, byte[], int, byte[], boolean) bci:62 line:53 (Interpreted frame)
0xfb20308d * java.lang.ProcessImpl.start(java.lang.String[], java.util.Map, java.lang.String, boolean) bci:182 line:65 (Interpreted frame)
0xfb202f27 * java.lang.ProcessBuilder.start() bci:112 line:452 (Interpreted frame)
0xfb202f27 * java.lang.Runtime.exec(java.lang.String[], java.lang.String[], java.io.File) bci:16 line:593 (Interpreted frame)
0xfb202f27 * java.lang.Runtime.exec(java.lang.String, java.lang.String[], java.io.File) bci:69 line:431 (Interpreted frame)
0xfb202f27 * java.lang.Runtime.exec(java.lang.String) bci:4 line:328 (Interpreted frame)
0xfb202f27 *SQLLoad(java.lang.StringBuffer) bci:181 line:51 (Interpreted frame)
0xfb202e61 *FSLoadThread.run() bci:84 line:54 (Interpreted frame)
The command I am trying to exec is "sqlldr" and I do have it in my PATH variable. Why is that the call to exec does not return? Any ideas?
This is on jdk1.6.0_17
Thanks,
Bijoy.

It has definitely forked, and this is the child process. It says so. If it was the parent process it would just show Java code related to launching processes. That does not involve PKCS11. After the fork there are two identical processes with the same stack: the child process of the fork goes on to replace itself with the target command via Unix exec(), which it doesn't look like it is succeeding at. The parent process doesn't do much at all, probably just housekeeping and then a Unix wait() for Process.waitFor() to hook into.

Runtime.getRuntime().exec() does not work after JRE upgradation

I have upgraded JRE from 1.3.0_02 to 1.3.1_15. After this upgrade, Runtime.getRuntime().exec() has suddenly stopped working. If I downgrade to 1.3.0_02, it starts working again.
Please help.

It has definitely forked, and this is the child process. It says so. If it was the parent process it would just show Java code related to launching processes. That does not involve PKCS11. After the fork there are two identical processes with the same stack: the child process of the fork goes on to replace itself with the target command via Unix exec(), which it doesn't look like it is succeeding at. The parent process doesn't do much at all, probably just housekeeping and then a Unix wait() for Process.waitFor() to hook into.

Unable to run certain commands on unix using the Runtime.getRuntime().exec(

Hi Folks,
I am unable to get any output if I try : Runtime.getRuntime().exec("who am i")
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if I give Runtime.getRuntime().exec("echo $PATH") then instead of printing the path it prints $PATH instead !!! similarly it is unable to understand any of the special unix characters such as " or ' & is assuming it to be a literal instead.
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I don't think that Runtime.getRuntime().exec() spawns a shell it just executes the file that is specified in the string. ecause of this you can not use commands that are built-in in the shell directly nor use special shell characters. You must spawn your own shell, try something like this:
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Executing a command by Runtime.getRuntime.exec().

Hi,
I am try to run a java command from one java program. Is it possible
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Runtime.getRuntime.exec(startjvm);
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when i execute the above command from the command line it executes,but when are run the main method for class A nothing happens meaning the message : "Inside the main for class B" is not displayed.
I also tried displaying the int returned by process.waitfor() method. process is the object returned by the Runtime.getRuntime.exec() method. The int returned is 0 which means the process terminated previously.
Thanks in advance

You could get InputStream from created Process and read
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For example
import java.io.BufferedReader;
import java.io.InputStreamReader;
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How to use Runtime.getRuntime().exec() in JSP? is it works in JSP or not

Hi to all,
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It depends, usually (ie in an J2EE container) you're not allowed to access files or the runtime environment, by definition. What do you wan't to achieve with the exe?
--olaf

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Hi ,
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No, I am using the right path, I am sure. Also I tried giving the absolute path of the UserGuide.pdf. Still it cannot find. Please anyone try spawning an application from a different directory and lemme know your openion.
Regards,
Thomas.

Runtime.getRuntime().exec(Command) problems...

hi, i am trying to run a NET USE command through using:
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from the command line and it worked fine. This class works perfectly under Windows, but then i took it to an
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under OS/2? any gotchas? thanks

i read that article, and there is a lot to go over. I will start that right now. Anyways, i got the actual stack trace
from this error:
at java.lang.Win32Process.create(Native Method)
at java.lang.Win32Process.<init>(Win32Process.java:67)
at java.lang.Runtime.execInternal(Native Method)
at java.lang.Runtime.exec(Runtime.java:566)
at java.lang.Runtime.exec(Runtime.java:428)
at java.lang.Runtime.exec(Runtime.java:364)
at java.lang.Runtime.exec(Runtime.java:326)
at ReconnectReportServer.run(ReportServer.java:499)
at java.lang.Thread.run(Thread.java:536)
and, once again, i am running this on OS/2. I compiled it on OS/2 as well. Any ideas? thanks!

Runtime.getRuntime().exec("cmd /c start file\\"+"My file.txt" ) Not work

Hello
i have a problem I use:
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Runtime.getRuntime().exec("cmd /c start file\\"+"Myfile.txt");
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Try using the verson where you specify the parameters in an array as this example shows:
http://forum.java.sun.com/thread.jspa?forumID=31&threadID=635363
Note: you may need to enclose the file name in quotes

Runtime.getRuntime().exec(...) problems and exit codes

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                              ecgsProcess = Runtime.getRuntime().exec(ecgCommand, null, new File(Config.HOME_PATH + Config.FLUTE_PATH));
                              String line;
                              ecgsStream = ecgsProcess.getInputStream();
                              isr = new InputStreamReader(ecgsStream);
                              br = new BufferedReader(isr);
                              StyledDocument styleDoc = mm.ecgFluteMessages.getStyledDocument();
                              Style def = StyleContext.getDefaultStyleContext().getStyle(StyleContext.DEFAULT_STYLE);
                              while((line = br.readLine()) != null && running){
                                   if(styleDoc.getLength() > 25000)     mm.ecgFluteMessages.setText("");
                                   styleDoc.insertString(styleDoc.getLength(), line+ "\n", def);
                                   mm.ecgFluteMessages.setCaretPosition(mm.ecgFluteMessages.getDocument().getLength());
                              System.out.println(ecgsProcess.waitFor());
                         }catch(Exception e){
                              try {
                                   br.close();
                                   isr.close();
                                   ecgsStream.close();
                              } catch (Exception e1) {
                                   e.printStackTrace();
               new Thread(r1).start();Adding a Thread.sleep between runnables doesn't have any effect.
In addition, those processes that are not properly launched return an exit value of 255. I have searched for its meaning but I have found nothing. Could anybody tell me where can I find a list of the JVM exit codes in order to guess what is happening?
Can anybody help me with this issue? Help is much appreciated.
Thanks a lot

I have been looking for it but it seems it has not any exit code list or any documentation regarding this. Anyway, I think 255 is a JVM error code (the last one, errors are numbered in modulo 256) which means that the error has nothing to do with JVM but with the application execution (flute in my case).
I have added a prompt for the errorStream and I have this message for the 255 exited programs:
not well-formed (invalid token) at line 15+
And the four commands are like this:
*./flute -S -m:239.255.255.253 -p:60102 -F:./ecgs -r:150 -C*
*./flute -S -m:239.255.255.252 -p:60103 -F:./ads -r:150 -C*
*./flute -S -m:239.255.255.251 -p:60104 -F:./pushvod -r:50 -C*
*./flute -S -m:239.255.255.250 -p:60105 -F:./banners -r:150 -C*
So, as the process is sometimes initialized properly and others it is not, it seems that there is a problem with the tokenizing of the command not happening always. As I have tried it with a single command line and with an array of command strings (the first for "./flute" and the followings for each argument) with the same results I can't understand why is this problem happening sometimes. Happening always would help me in giving a clue but that's not the case.
Any idea? Thanks a lot.
Edited by: dulceangustia on Apr 3, 2008 3:41 AM

Runtime.getRuntime().exec(x) "Command not found"?

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