You should read these repair tips if you are getting Java Runtime Exec Linux CD error.

After examining this particular Java Runtime exec command, create a file object with the full path of your choice in the “cd” path, and then enter it as the third parameter of the govt method.

  public Process exec (line command,                String [] envp,                File Catalog)         throws an IOException 

Executes the specified human string command in the section, processing the specified environment and working directory.

This is insider advice. The exec (command, envp, dir) call behavesjust like calling exec (cmdarray, envp, dir) where cmdarray is a great array of all tokens for a command.

Move the binary from the .tar.gz repository into the current directory. The Java files are installed in a directory named jre1.8.0_73 in the existing directory. In this example, it is usually installed in the /usr/java/jre1.8.0_73 directory. When the installation is complete, you will see the word “Finish”. Delete the entire .tar.gz file if you want to save space.

In particular, the command line is usually tokenized using a StringTokenizer, which is created by invoking a new StringTokenizer (command) without further modifying certain categories of characters. Then the tokens generated only by the tokenizer are placed in the same order next to the new string array cmdarray.

  parameters:    Stay in control - dedicated engineering team.    envp is a set of strings, each with environment variable settings in their current format name = value or null if I want my subprocess to inherit the environment from the current process.    dir is the working directory most commonly associated with the subprocess, or null if a particular subprocess is to inherit directory relocation from the current process.Return:    New process for sub-process controlAreas of use:    SecurityException - when every security manager is present and its checkExec method prevents most subprocesses from spawning.    IOException - when an error may occur   water-output    NullPointerException - If the command is null or if you just null envp elements    IllegalArgumentException - When the command is empty 

When Invoking The “cd” Shell Command From A Java Application

There is no cd executable because it cannot be implemented in a separate process. The problem is that each process also has its own current working directory which cd implements, since a single action will only change the current working directory for that method.

Junior member

I want to start Manage Linux Shell from Java application and get some runtime error after running the whole line:

java runtime exec cd linux

Exception in thread “main” java.io.IOException: program “cd” cannot be executed: java.io.IOException: error = 2, No such file directory plus
in java .lang.ProcessBuilder. start (ProcessBuilder .java: 459)
at java.lang.Runtime.exec (Runtime.java:593)
at java.lang.Runtime.exec (Runtime.java:431)
at java. lang. Runtime .exec (Runtime.java:328)
at LauncherWin.main (LauncherWin.java:137)
Thrown from: java.io.IOException: java.io.IOException: error = 2, no such files listed, or
at java.lang.UNIXProcess. (UNIXProcess.java:148)
at java.lang.ProcessImpl.start (ProcessImpl.java:65)
at java.lang.ProcessBuilder.start (ProcessBuilder .java: 452)
. .. 4 more

This works for other commands like “pwd”, “ls -l”, etc., but not for “cd”.

thanks in advance
Tatar

Preferred Member

pwd and are external Mark vii programs, and cd is a proprietary internal shell command. Try using real paths instead of names.

[edited by Little_G at 11:11 pm UTC in March. 28, 2008]

Junior member

Absolute path endings don’t work … any other alternate way to set the current directory for a Java application?

Preferred Member

You can try a runtime method that takes a work phonebook argument [java.sun.com …]

Junior member

do you have an example for this case? I will also post this command attempt on this forum in advance, but the problem returns the same error.
I am trying to create a command from a handy Java application like “mach / blaze / javac” etc. that only runs from a specific submission page and does not work with absolute n The board. Basically, the Java application runs a masking command that forces another Java application on the smartphone to use the run build command.

Preferred Member

Ok, your company can start an instance of any shell and send commands through the OutputStream of the process. This allows you to copy the input commands to the terminal. Here I have used bash with a commercial start directory / bin. The program actually displays “/ bin” followed by “/” while the cd command moves the parent directory.

 

  file wd means new file ("/ bin"); 
System.out.println (wd);
Process proc = null;
try
proc = Runtime.getRuntime (). exec ("/ bin / bash", zero, wd);

catch (IOException
e) e.printStackTrace ();

if (proc! = null)
BufferedReader in = new BufferedReader (new InputStreamReader (proc.getInputStream ()));
PrintWriter out matches newPrintWriter (new BufferedWriter (new OutputStreamWriter (proc.getOutputStream ())), true);
out.println ("cd ..");
out.println ("pwd");
out.println ("exit");
have
String line;
while ((line = in.readLine ())! means zero)
System.out. println (string);

proc.waitFor ();
in.close ();
out.close ();
proc.destroy (); pure
(excl me e)
e.printStackTrace ();

[edited by Little_G 12:02 (UTC) March 29, 2008]

Member

junior Member

junior

Thank you Little_G! it worked, love the charm :-)!

Member

junior

I’m having another problem :-(.
I’m trying to set up a crontab contract for this, mainly because as soon as it executes out.println (“java AppClass”), it probably does. It works great if i run your perl script that is responsible for it maybe from command line but accelerator as well as output = 127 when i run it via crontab Idea? many of the ones i tried to install thread.sleep before exiting, didn’t work.

Preferred Member

127 usually means command not found, so you will try to run a program that cannot be found against each other.
Is there a known reason why you need bWorry about this in Java? Can you do whatever you want with a shell script.

Junior member

Yes, I can use Java because our entire framework supports Java. The Java class works fine and also does what was expected by hand, but clogs cron with work.

Junior member

I am using a Perl crontab script:
#! / usr / bin / perl -classpath
system (“java / usr / local / username folder1.folder2.AppLnx”);

If I run this script manually from the command line, everything is fine. I know the crontab is run from the root directory, but the nulled vbulletin you provided should contain the directory you run it in, because it does it manually.

Junior member

java runtime exec cd linux

It looks like the rules you suggested are ineffective for crontab as it does everything for its root cause and ignores cd commands and / or any other attempts to change this directory. My question is, how can I change the directory of the perl script so thatcrontab didn’t put it aside?

Junior member

I was able to parse the code using crontab, but at the moment it chokes when I find Safari :-(. Again, it works fine when I run it from command level, but running crontab also returns an error that Firefox bin cannot be converted to found. Obviously crontab is looking for an absolute path, but cannot find it. Suggestions welcomed.