sudo inside a here document not working Post: 302473865

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Top Forums Shell Programming and Scripting sudo inside a here document not working Post 302473865 by ygemici on Monday 22nd of November 2010 04:34:45 PM

11-22-2010

Registered User

Quote:

Originally Posted by mnanavati

Have a sudo statement inside of a here document. It prompts me for a password, but doesnt wait for me to enter my password. Is there a way I can use the command without sudo or anyway that I can enter the password correctly?

Eg :

Code:

 
while read  remotehost
do
  ssh -t $2@$remotehost  <<REMOTE
 
   ls /path/to/file/ | while read line
     do
              sudo  vserver \$line enter
              echo "\$line Hello world"
      done
 
REMOTE
done < "$remotehostlist"

This asks for password for the following line sudo vserver $line enter. But it doesnt wait for me to enter password. Also if I type something it appears in cleartext.

Please help!!

I think there are maybe some errors in your script
if you think everything is ok then you can try this

Code:

while read  remotehost
do
  ssh -t $2@$remotehost  <<REMOTE
 
   ls /path/to/file/ | while read line
     do
              sudo -k
              sudo  vserver \$line enter
              echo "\$line Hello world"
      done
 
REMOTE
done < "$remotehostlist"

regards
ygemici

ygemici

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yppasswd

yppasswd(1)						      General Commands Manual						       yppasswd(1)

NAME

       yppasswd - change password in Network Information Service (NIS)

SYNOPSIS

       yppasswd [name]

DESCRIPTION

									  Note

       If Enhanced Security is enabled on your system, use the passwd command to change your password, even if NIS is in use.

       The  yppasswd command lets you change your password in the Network Information Service (NIS) map, a network data base service.  Only you or
       the superuser can change your NIS password.

       When you enter the yppasswd command, the program prompts you for the old password and then for the new password. Note  that  the  passwords
       are not displayed on the screen.

       Next,  the  program asks you for the new password again, to verify that you have typed it correctly.  If you do not type the passwords cor-
       rectly, you will receive an error message after you enter the new password.

       Your new NIS password must meet one of the following requirements: It must be a combination of at least six alphanumeric characters, or	It
       must be a minimum of four characters, with at least one being non-alphanumeric, such as a control sequence.

									  Note

       The passwd command does not change the NIS password.  This command only changes the local password file (/etc/passwd), and not the NIS mas-
       ter password file.

ERRORS

       Your new password does not meet the minimum length requirement.	You misspelled your new password or its verification.  Your  new  password
       can not be activated. It must be different from your old password and your login name.

FILES

       Password file NIS directory

SEE ALSO

       passwd(1), passwd(4), ypfiles(4), yppasswdd(8)

       Network Administration

																       yppasswd(1)