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From "Sebb (JIRA)" <j...@apache.org>
Subject [jira] Closed: (EXEC-45) Error while executing a command like echo
Date Tue, 23 Mar 2010 15:29:27 GMT

     [ https://issues.apache.org/jira/browse/EXEC-45?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sebb closed EXEC-45.
--------------------


> Error while executing a command like echo
> -----------------------------------------
>
>                 Key: EXEC-45
>                 URL: https://issues.apache.org/jira/browse/EXEC-45
>             Project: Commons Exec
>          Issue Type: Bug
>    Affects Versions: 1.0.1
>         Environment: OS: Windows XP SP3
>            Reporter: varma
>
> Hello,
> After looking at the javaDoc for DefaultExecutor, I've tried a simple command that does
an "echo" and re-direct the output to a file. But, I'm getting "IOException". Not sure what
I am missing here or is it possible to execute a command directly without specifying the path
to an executable? I appreciate your help.
> This is what I'm trying:
> {code:title=CommandExec.java|borderStyle=solid}
> public final void executeEcho()
> {
>       try
>       {
>          final CommandLine command = new CommandLine( "echo someValue" );
>          command.addArgument( "> c:\test.txt" );
>          final DefaultExecutor executor = new DefaultExecutor();
>          final int value = executor.execute( command );
>          System.out.println(value);
>       }
>       catch(Exception e)
>       {
>          e.printStackTrace();
>       }
> }
> {code}
> Exception being thrown:
> {code:title=exception}
> java.io.IOException: Cannot run program "echo someValue": CreateProcess error=2, The
system cannot find the file specified
> 	at java.lang.ProcessBuilder.start(Unknown Source)
> 	at java.lang.Runtime.exec(Unknown Source)
> 	at org.apache.commons.exec.launcher.Java13CommandLauncher.exec(Java13CommandLauncher.java:58)
> 	at org.apache.commons.exec.DefaultExecutor.launch(DefaultExecutor.java:246)
> 	at org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:302)
> 	at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:149)
> 	at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:136)
> 	at testing.CommandExex.main(CommandExex.java:15)
> Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file
specified
> 	at java.lang.ProcessImpl.create(Native Method)
> 	at java.lang.ProcessImpl.<init>(Unknown Source)
> 	at java.lang.ProcessImpl.start(Unknown Source)
> 	... 8 more
> {code}
> From DefaultExecutor's JavaDoc:
> {code}
> Executor exec = new DefaultExecutor();
> CommandLine cl = new CommandLine("ls -l");
> int exitvalue = exec.execute(cl);
> {code}

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