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Old 06-02-2007, 05:32 PM   #1
alix123
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Registered: Nov 2004
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Question specifying password in the ssh command


in windows using plink i can execute the following command

plink.exe -ssh -l root -pw password9 10.201.200.22 /sbin/shutdown -r ,to reboot a remote linux box.

not i want to execute the above command in linux ?
Is there a way in from linux i can specify password in the command line.

for example i checked the man page it does have an option for -l (login) but it does't have an option for specifying the password.

The man page only says you have to go through the keygen process ,so that next time it doesnt asks you the password.

Anybody is aware how to reboot a remote Linux machine from another linux box (without installing any extra package)?

Last edited by alix123; 06-02-2007 at 05:42 PM.
 
Old 06-02-2007, 05:53 PM   #2
jschiwal
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The keygen program isn't a new package. It is a part of the ssh installation. Even in windows, putty for example would have a similar program installed. You can also use expect.

However, you are doing two very bad things.
1) putting the password in a script is a very bad thing to do. If the windows machine is compromised, every machine who's password you have stored is also compromised.
2) Your target linux machine allows root logins.

Even using keygen and authorized hosts isn't the best thing to do, because if your windows machine is compromised, so are the keys. It is best to set up the keys to require a passphrase and then use ssh-agent when you boot the machine. Then you enter the passphrase (from memory) once then can then run automated scripts which supply the keys needed to connect to the remote server.

Last edited by jschiwal; 06-02-2007 at 05:54 PM.
 
Old 06-03-2007, 04:00 AM   #3
alix123
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Registered: Nov 2004
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Question I'am not concerned about the security of the machine

Hii

I'am not concerned about the security of the machine,since all of the machines are test machines and have private addressing scheme. and we reimage the machines very often.

I'am more concerned about executing command remotely to reboot the machine.

Are you aware of a way to do it ?? so that i can put that in my scripts? objective here is

Linux Scripts machine ----Reboot---> Remote Linux machine

Last edited by alix123; 06-03-2007 at 04:03 AM.
 
  


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