Why chdir command doesn't work with client.get_transport() ?

[Charles_hans]

Thank you, Matt, for your valuable advice! I did try using ';' to issue three
commands at once and it works!

However, I have more problems with issuing ClearCase commands, which is what
I am really doing.

Under telnet, I could issue commands one by one, just as typing at the
command prompt. Now I tried to use ';' manually typing two commands at once
on my Solaris command line, such as 

     ct setview viewName; cd dir_in_clearcase

(ct = cleartool) The second command will not be executed, since the command
prompt changes after the first command. --- I think that it was because
there was a long delay after the first command. (any way out?)

When I used exec_command() to do this in Python, even the first command was
not recognized (error: bad phone number. I used 'man ct' and found that ct
dials a phone number). Even if 'ct' was recognized, the second command would
not be executed. And it is useless to do it in the next exec_command()
function. (Without the first command, one can not cd into a directory in
ClearCase.)

Do you think that paramiko can replace telnet in my application? Thanks.

Charles
2/5


Matthew_WARREN wrote:
> 
> 
> As other have said, it's because exec_command uses a new session each
> time.
> 
> You may get some joy with this, untested
> 
> exec_command('cd /some/where; somecommand')
> 
> uses the semi-colon to separate multiple commands on one command line.
> 
> 
> Matt.
> 
> 
> 
> 
>                                                                                                                                  
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>            python.org                                                                                                   
> Subject 
>                                                                        
> Why chdir command doesn't work with                      
>            02/02/2008 23:41                                            
> client.get_transport() ?                                 
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> 
> 
> 
> 
> I am new to paramiko. I wrote a script to copy files between Solaris and
> XP
> machines as below:
> 
> import paramiko
> def exec_command(trans, command):
>     chan = trans.open_session()
>     chan.exec_command(command)
>     stdin = chan.makefile('wb')
>     stdout = chan.makefile('rb')
>     stderr = chan.makefile_stderr('rb')
>     return stdin, stdout, stderr
> def main():
>     client = paramiko.SSHClient()
>     client.connect(hostname, username=username, password=password)
>     trans = client.get_transport()
>     dummy_chan = trans.open_session()
>     exec_command(trans, 'cd temp')
>     stdin, stdout, stderr = exec_command(pwd)
> 
>>From the last line I found from stdout that the pwd is not changed. I
> tried
> to type the full path in 'cd', did not help. Other UNIX commands such as
> ls,
> mkdir, cp, rm will work. Only this 'cd' never works. I got stuck here.
> 
> Please help. Thanks!
> 
> Charles
> 2/2
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