Mike V wrote:
Thank you! That looks a lot better than the craziness I was doing.
When you do createChannel() how do you send the command to the shell
channel?
Hi, simplifed createChannel looks like this:
protected Channel createChannel() throws JSchException {
ChannelExec echannel = (ChannelExec)
session.openChannel("exec"); // NOI18N
echannel.setCommand(theCommand);
echannel.setInputStream(null);
echannel.setErrStream(System.err);
echannel.connect();
return echannel;
}
-- Sergey
Thank you for your help
-Mike
------------------------------------------------------------------------
Date: Tue, 16 Sep 2008 01:16:12 +0400
From: [EMAIL PROTECTED]
Subject: Re: [JSch-users] How do you capture output of a command
executed on Shell?
To: [EMAIL PROTECTED]
CC: [email protected]
You can just read from channel.getInputStream(). That's my code for
running remote shell commands:
try {
channel = createChannel();
InputStream is = channel.getInputStream();
in = new BufferedReader(new InputStreamReader(is));
out = new StringWriter();
String line;
while ((line = in.readLine()) != null ||
!channel.isClosed()) {
if (line != null) {
out.write(line + '\n');
out.flush();
}
}
in.close();
is.close();
setExitStatus(channel.getExitStatus());
} catch (JSchException jse) {
log.warning("Jsch failure during running " + cmd);
} catch (IOException ex) {
log.warning("IO failure during running " + cmd);
} finally {
disconnect();
}
Mike V wrote:
How do you capture output of a command executed on Shell, and how
do you know if it is done executing?
I need this because some programs look for variables set by the
.profile (ksh).
This is how I'm doing it now:
-open Shell channel and send a ByteArrayInputStream that contains
my command, while outputing to a tmpfile.txt
-sleep for a bit and then (this is because i dont know when my
command is done running.. this is a retarded way of doing it since
some commands take a lot longer than others)
-open another channel(Exec) and send "cat tmpfile.txt" then read
the input stream
-remove the temp file
********************start of sample code**********
commandToRun=commandToRun + " > "+tempFile+"\n";
byte[] bytes = commandToRun.getBytes();
ByteArrayInputStream bais=new ByteArrayInputStream(bytes);
try { ..... //session connection stuff
.....
Channel channel=session.openChannel("shell");
((ChannelShell)channel).setInputStream(bais);
channel.connect();
try{Thread.sleep(1500);}catch(Exception ee){}
Channel channel2=session.openChannel("exec");
((ChannelExec)channel2).setCommand("cat
"+tempFile+"\n");
InputStream in1=channel2.getInputStream();
channel2.connect();
//channel 3 deletes the temp file
**********************end of sample code **************************
There must be a better way of doing this...
What about a way to know when the command is done? Since the first
channel is a shell, i dont think you can wait for is to be
.isClosed() since it never is.
Thank you very much for your help.
Mike
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