I am giving ping command in exec method of Runtime().
But ping syntax is different for linux and windows. So when I run command on windows it wasn't worked. I am giving command -->ping -c5 ipaddress . This works fine for linux but in windows, there is no -c option. So is there any solution to overcome this situation?
please reply ASAP.
Thanks,
Raj
I am writing code that runs ping command on all OS.
Ping syntax different for different OS (like windows,linux,solaris etc).
I don't want to check for each OS and run command specific to that OS.
I want to write a generic program so ping command execute regardless of which OS.
Can I use system calls in my program to execute the ping command, If yes, how?
please reply soon.
Thanks,
Raj
> I am writing code that runs ping command on all OS.
>
> Ping syntax different for different OS (like
> windows,linux,solaris etc).
> I don't want to check for each OS and run command
> specific to that OS.
> I want to write a generic program so ping command
> execute regardless of which OS.
This is self-contradictory. You can't use one command line string on different platforms if they don't support this one command string.
The ping command is different (concretely, this -c option you mention is indeed not supported on Windows - what does it do anyway?) on different OS.
So, you basically have two options:
- You use only a subset of the ping options, one that does run on all your platforms (I actually expect ping to be pretty portable anyway but...).
- Or you do use platform specific options like -c, in which case there's no way around checking the running OS and generating a specific command line.
> Can I use system calls in my program to execute the
> ping command, If yes, how?
Rephrase please.
> I am writing code that runs ping command on all OS.
Since the ping command isn't available to all OSes, that might not work.
> Ping syntax different for different OS (like
> windows,linux,solaris etc).
> I don't want to check for each OS and run command
> specific to that OS.
You'll have to.
> I want to write a generic program so ping command
> execute regardless of which OS.
Then you need to find a generic ping method. The ping commands are not generic. By the way, did it occur to you to enter "ping" into the forum search?
Thanks for ur response.
But requirement is that I don't have to check OS.
>Can I use system calls in my program to execute the
> ping command, If yes, how?
-->Rephrase please.
Is java provide any system call that run ping command?
Thanks,
Raj
> Thanks for ur response.
>
> But requirement is that I don't have to check OS.
Why? Your requirement is to do something that is inherently platform specific, without checking the platform it is running on...
>
> >Can I use system calls in my program to execute the
> > ping command, If yes, how?
> -->Rephrase please.
>
> Is java provide any system call that run ping
> command?
Yes, thanks, that's meaningful.
What is a "system call" to you? Is it not calling a platform-specific C function in the OS' API (which you can do with JNI)? In which case you would have to know what platform you are running on to make the call.
Thanks for ur response.
> What is a "system call" to you? Is it not calling a platform-specific C function in the OS' API (which you can do with JNI)? In which case you would have to know what platform you are running on to make the call.
Ok. I agree.. For use native methods i have to know OS.
So is there no any other way except check for OS. bcoz I have to implement code for each OS (linux,windows,solaris..etc) for that i have check OS and run appropriate command. Is that so ? Is there any better solution except this?
Thanks,
Raj
> The ping command is different (concretely,
> this -c option you mention is indeed not supported on
> Windows - what does it do anyway?) on different OS.
PING(8) System Manager's Manual: iputils
-c count
Stop after sending count ECHO_REQUEST packets.
With deadline option, ping waits for count ECHO_REPLY
packets, until the timeout expires.
> So is there no any other way except check for OS.
> bcoz I have to implement code for each OS
> (linux,windows,solaris..etc) for that i have check OS
> and run appropriate command. Is that so ? Is there
> any better solution except this?
How about, as I think I already pointed out in the very first reply, implementing the ping functionality yourself? Shouldn't be rocket science.
Nope, I can't use URLConnection. Because I want to check connection for user entered IP Address.
How we implement ping functionality programatically.
I want same o/p as following commands giving:
Windows : ping -n 5 -l 64
linux : ping -c5 -s64
Thanks,
Maulik
//java.net.InetAddress
public boolean isReachable(int timeout)
throws IOException
/*
Test whether that address is reachable.
Best effort is made by the implementation to try to reach the host,
but firewalls and server configuration may block requests resulting
in a unreachable status while some specific ports may be accessible.
A typical implementation will use ICMP ECHO REQUESTs
if the privilege can be obtained, otherwise
it will try to establish a TCP connection on port 7 (Echo)
of the destination host.
Since:
1.5
*/
