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. Internet [EMAIL PROTECTED] To python-list Sent by: cc python-list-bounces+matthew.warren=uk.bnpparibas.com@ python.org Subject Why chdir command doesn't work with 02/02/2008 23:41 client.get_transport() ? 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 -- View this message in context: http://www.nabble.com/Why-chdir-command-doesn%27t-work-with-client.get_transport%28%29---tp15248798p15248798.html Sent from the Python - python-list mailing list archive at Nabble.com. -- http://mail.python.org/mailman/listinfo/python-list This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified. Do not print this message unless it is necessary, consider the environment. --------------------------------------------- Ce message et toutes les pieces jointes (ci-apres le "message") sont etablis a l'intention exclusive de ses destinataires et sont confidentiels. Si vous recevez ce message par erreur, merci de le detruire et d'en avertir immediatement l'expediteur. Toute utilisation de ce message non conforme a sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. L'internet ne permettant pas d'assurer l'integrite de ce message, BNP PARIBAS (et ses filiales) decline(nt) toute responsabilite au titre de ce message, dans l'hypothese ou il aurait ete modifie. N'imprimez ce message que si necessaire, pensez a l'environnement. -- http://mail.python.org/mailman/listinfo/python-list