View Full Version : Command Line sytnax

China Diapers
Apr 16, 2011, 04:04 AM

I am trying to run a java solution remotely on a server, I am using the below command in the terminal:

java RemoteShellClient 50001 "cmd" "java -jar -Dusername=xxx -Dpassword=xxx -DcCodes=all C:\BetInTime.jar ServiceSF"

Confidential info hidden with x's.

But am getting the below error:

Invalid input data

Could this be a syntax error?


OK, on further inspection, the shellscript seems to rely on some batch files:


Contents of which are:

set ClassPath=RemoteShell.jar
java RemoteShellServer %1 %2

set ClassPath=RemoteShell.jar
java RemoteShellClient %1 %2 %3 %4

javac -g:none *.java
jar cvf RemoteShell.jar *.class

Do you think it would help to rewrite these as bash files?

Apr 16, 2011, 06:21 AM
The direct port of these batch files to bash scripts would be, respectively:

export CLASSPATH=RemoteShell.jar
java RemoteShellServer $1 $2

export CLASSPATH=RemoteShell.jar
java RemoteShellClient $1 $2 $3 $4

javac -g:none *.java
jar cvf RemoteShell.jar *.class

But you seem to be by-passing them by using java RemoteShellClient directly from the command line. So I don't think they're the cause of your error.

According to JavaClient.bat (now the JavaClient bash script), RemoteShellClient expects 4 arguments. From the look of the command your trying to use, these arguments are: 1) the IP address of the remote computer, 2) the port of the remote computer, 3) the command to run on the remote computer, 4) the arguments to be passed to the remote command. The remote command and argument suggests that the remote computer is running Windows. Is that the case?

Do you know where the error is coming from? I've not seen bash output this error, so I doubt it's coming from there. Is there other output to suggest it's coming from RemoteShellClient, or from the remote computer?

Apr 16, 2011, 11:56 AM
java RemoteShellClient 50001 "cmd" "java -jar -Dusername=xxx -Dpassword=xxx -DcCodes=all C:\BetInTime.jar ServiceSF"

This command won't work.

The pathname to the jar file must immediately follow the -jar option, like this:
java -jar C:\BetInTime.jar -Dusername=xxx -Dpassword=xxx -DcCodes=all ServiceSF"

or this:java -Dusername=xxx -Dpassword=xxx -DcCodes=all -jar C:\BetInTime.jar ServiceSF"

Based on the batch files, I'm not convinced that -jar is the option to use. -cp may be better suited, if you're expecting to run the ServiceSF class. Example:
java -cp C:\BetInTime.jar -Dusername=xxx -Dpassword=xxx -DcCodes=all ServiceSF"

Apr 17, 2011, 07:30 AM
Wouldn't it be easier to wrap the command in a bash script and do an rexec to execute it remotely?

Apr 17, 2011, 11:46 AM
java RemoteShellClient 50001 "cmd" "java -jar -Dusername=xxx -Dpassword=xxx -DcCodes=all C:\BetInTime.jar ServiceSF"

I would break troubleshooting this into two parts:

1. Test that you can remotely execute a command by doing something trivial. Perhaps like this:

java RemoteShellClient 50001 "cmd" "echo testfile > testfile.txt"

Assuming that the RemoteShell server is running, has correct permissions to write somewhere, and you know where that somewhere is you should see a testfile.txt created there. If this doesn't work, then you need to check the server config.

2. Locally run the BetInTime.jar file on the server to verifiy it works properly and that the command arguments are correct. From the C:\ prompt on the server:
java -jar -Dusername=xxx -Dpassword=xxx -DcCodes=all C:\BetInTime.jar ServiceSF

If that doesn't work, you need to figure out why, and adjust the command so it does.