Thanks for the reply , but my major concerns is that java program should first establish he connection with server first how it will make ssh connection first and then it will execute that script , please advise
Say in unix (AIX) m/c, I am logged in with s1 user and want to start process p1 with user credentials of s2.
I can do manually in this way:
#su - s2
#enter password for s2> somePassword
$ p1
But all this I have to do through a java program. How to pass the password through program.
One... (1 Reply)
Hi,
I'm curious about the advantage of forking and executing a program in a user shell as opposed to forking and executing the program directly without the user shell.
For example:
why is it often like:
SSHD->fork&exec(shell, sftp-server)->fork&exec(sftp-server)
And Not like:
... (2 Replies)
Hi,
I am looking for a cgi-script which runs a shell script from a web page.
When I click "Run" from a web page it should run the shell commands in an
textarea and results should get back to web page.
Thanks
Venkat (5 Replies)
I am entirely new to shell scripting and would like to create a script to execute a java program called Main. I've already compiled it and placed the .java and .class files at /root/javaTest. Next I made a shell script that simply contained: java /root/javaTest/Main . I made the script... (2 Replies)
I have a program that returns a shell script and I want to execute the script.
I'll use cat in my simple example, but wget is an example that is feasible.
$ # First setup a script
$ echo "ls
> df" > simple
$ # "cat simple" is now a program that returns a script
$ cat simple
ls
df
$ ... (3 Replies)
Hi All,
well , i am facing this problem.. i have tried a few sample codes but there isn't any solution . could anyone please give a sample code as of how to do this...
Please see the below details...and read the details carefully.
I have written some code, logic is
1)from... (4 Replies)
Hi,
We are having a java server which can run on command line and once initiated, it will prompt options to enter from 0 to 5. The java program kickoff respective operation once number is entered between 0 to 5. However i want to always enter "1" and write another shell program wrapper to start... (4 Replies)
Hi,
I have create a Shell Script, with one function.
I want to call the script file in Java Program.
It working fine. but the problem is the function in the Shell Script is not executed.
Please suggest me,
Regards,
Nanthagopal A (2 Replies)
I have a .jar placed in my Unix directory. The .jar creates a .csv file .I want to execute the .jar and place the output file in a target Unix directory.
The Unix Script is as follows. The issue that i am facing is that the file is not being placed in the REPORTDIR=/cdunix/IQNavigator/wrk instead... (4 Replies)
I'm trying to use a shell script to compile and execute a java file. The java classes are using sockets, so there is a client.java file and a server.java file, each with their own shell script. I also want to handle the command line arguments within the shell script, not the java classes. The... (1 Reply)
Discussion started by: britty4
1 Replies
LEARN ABOUT DEBIAN
java-wrappers
JAVA-WRAPPERS(7) Java wrappers JAVA-WRAPPERS(7)NAME
java-wrappers - capacities shared by java wrapper scripts
DESCRIPTION
Most Java programs are not run directly, but through small shell scripts that take care of various things, such as finding a suitable java
environment and looking for libraries.
To ease the task of the maintainers, they rely on a library providing runtime detection, library detection and other features. This manual
page describes the common features of all those scripts, and to which point you can configure them. This is mainly done via environment
variables.
ENVIRONMENT VARIABLES
java-wrappers understands some environment variables:
JAVA_CMD
The java command that will be run. If this variable is set, it disables all lookup for a java runtime.
JAVA_BINDIR
Specifies a directory that will be looked for a java or a jdb executable (depending on the setting of JAVA_DEBUGGER). It has prece-
dence over JAVA_HOME but not over JAVA_CMD.
JAVA_HOME
A path to a java runtime. If this variable is set, all lookup for a java runtime is disabled, except that if no java executable is
found in the path, the command java is used.
JAVA_FLAVOR
A probably more easy-to-use version of the JAVA_HOME variable: instead of specifying the full path of the java runtime, you name it.
List of available flavors can be found in the file /usr/lib/java-wrappers/jvm-list.sh. See examples below.
JAVA_DEBUGGER
If this is set, the wrapper will try to pick up a java debugger rather than a java interpreter. This will fail if the jbd of the
runtime found is a stub.
JAVA_CLASSPATH
Additional classpath, will have priority over the one found by the wrapper.
JAVA_ARGS
Additional arguments to the java command. They will come before all other arguments.
FORCE_CLASSPATH
If this variable is set, it will be the only classpath. You'd better know what you are doing.
DEBUG_WRAPPER
This is probably the most important variable; if it set, the wrapper will print out useful information as it goes by its business,
such as which runtime it did find, and which command is run eventually.
JAVA_JARPATH
The path where the wrappers will go looking for jar archives. If not set, the wrapper will look into the default directory,
/usr/share/java. Warning : the wrapper will not look anywhere else than in JAVA_JARPATH. Setting it incorrectly will most probably
result in early crashes.
EXAMPLES
The examples all rely on rasterizer(1), from the package libbatik-java, but they really apply to all scripts that use java-wrappers.
Print out debugging information:
DEBUG_WRAPPER=1 rasterizer
Limit rasterizer's memory to 80 MB:
JAVA_ARGS=-Xmx80m rasterizer
Force rasterizer to run with kaffe(1):
JAVA_HOME=/usr/lib/kaffe rasterizer
The same, but using JAVA_BINDIR:
JAVA_BINDIR=/usr/lib/kaffe/bin rasterizer
Force rasterizer to run with openjdk:
JAVA_FLAVOR=openjdk rasterizer
Debug rasterizer with Sun's debugger, while printing debugging information from the wrapper:
DEBUG_WRAPPER=1 JAVA_CMD=/usr/lib/jvm/java-6-sun/bin/jdb rasterizer
BUGS
Care has been taken to make the wrappers bug-free. If that was not the case, please file a bug report against the java-wrappers package.
If you wish to submit any problem with a java executable relying on java-wrappers, please also submit the output of the command run with
DEBUG_WRAPPER=1. It will save one mail exchange and therefore potentially reduce the time it takes to fix the bug.
DEVELOPERS
There is currently no documentation about writing a wrapper script save the comments in /usr/lib/java-wrappers/java-wrappers.sh. If you
have to write one, we suggest you base yourself upon, for instance, the rasterizer wrapper script, or any other one (just pick up any
direct reverse dependency of java-wrappers and look for scripts).
SEE ALSO java(1), jdb(1)
/usr/lib/java-wrappers/java-wrappers.sh
AUTHOR
java-wrappers and its documentation were written by Vincent Fourmond <fourmond@debian.org>
Version 0.1.16 2010-05-04 JAVA-WRAPPERS(7)