asked on

plink => su: must be run from a terminal

Hello,

I need to reboot a linux server from Windows.

My script doesn't work.

reboot.bat

echo n | putty -ssh -t -noagent  %LOGIN%@%IP% -pw %PASSWORD% -m localshell.sh

Open in new window

localshell.sh

#!/bin/bash 
echo 123456 | su - reboot
ping 127.0.0.1

Open in new window

I can't change linux parameters.
PermitRootLogin No
My user isn't sudoers

i have root password & user password

Thanks for your help !

woolmilkporc

It's

su - -c reboot

ping ... in your script is useless, it will not be processed after "reboot"

What should these "echo n" and "echo 123456" be good for?

Finally. I assume you meant to write "plink" instead of "putty" in the code you posted?

Mazdajai

I don't think you can pass in plain text for password with su.

Any reason why you are not using sudoer? You can pass in a password argument with plink if you have sudoer setup. One line in batch. For example -

plink -pw bad user@server sudo /usr/bin/reboot

simon3270

I assume that the "echo 123456" in localshell.sh is for the root password. Couple of problems with that - su doesn't read the password from stdin, and it can't be run in a pipeline like that.

You need to use expect:

expect <<EOF
spawn su - -c reboot
expect sword
send "123456\r"
expect eof
EOF

Open in new window

PepperRed

ASKER

ping command is just to see the error "su: must be run from a terminal"

With plink or putty in my script, the error is the same.

Don't use sudoer is my company policy.

I try su - -c reboot but : "su: must be run from a terminal"

As Mazdajai say it, i think i can't pass in plain text for password with su.

Do you know an other method to reboot a linux from Windows with my constraints

Thanks

Mazdajai

Passing plaintext password with su is the problem. I don't see this is possibile with your contriant.

ASKER CERTIFIED SOLUTION

Duncan Roe

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

woolmilkporc

Back to the original issue ("su: must be run from a terminal"):

The "-t" flag of plink (not putty!) should take care of allocating a pseudo tty.

Apart from all the other good suggestions above: "su - -c ..." should work and ask you for a password if you really used "plink" and its "-t" flag.
Try without "echo 123456 | " (If you're still interested, that is).

PepperRed

ASKER

I try yours differents solutions with no success and finally i have success with expect script.

My expect script which i launch from a batch :

RebootLinux.exp

expect <<EOF
spawn "C:\\Program Files\\PuTTY\\plink.exe" -ssh -t -noagent  test@192.168.12.345 -pw password

expect sword
send "su -\r"
       expect {
           "Password: " {send "123456\r"}
       }
expect sword
send "reboot\r"

expect eof

Open in new window

Thanks all

plink =&gt; su: must be run from a terminal

plink => su: must be run from a terminal