Re: [JSch-users] JSch Exec and the remote users environment

[Mr M. <ya...@lu...>]

> Hmm... I'm still confused (sorry).  How does that reconcile with this code
> from the Exec.java example?
>
> String command=JOptionPane.showInputDialog("Enter command",
>                                                  "set|grep SSH");
>
>       Channel channel=session.openChannel("exec");
>       ((ChannelExec)channel).setCommand(command);
>
> It sure seems like whatever input the user gives is captured as a string
> and
> passed directly to the channel without modification into a set of
> character
> arrays.  In my code (not handy now, but I can post it on Monday), I'm
> doing
> essentially the same thing.  Also, why would double-double quoting make
> the
> string work?

Sorry I was thinking in C not java.

OK second guess:

Something somewhere is already putting one set of quotes in. Adding more
quotes unquotes the first set.
i.e.
"ls -l" is a single command no arguments
and
""ls -l"" is a command with one argument
The double quotes are used to escape things in the shell in this case a
space.
Two quotes in a row escape what's in between i.e. nothing

Try this on a shell and you should see this behaviour.
Also "ls" has the expected behaviour but "ls " wont work.

Have you tried printing out the command to check what the string is?

-- 
M