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Top Forums Shell Programming and Scripting replace information in a file Post 302478357 by rdcwayx on Tuesday 7th of December 2010 06:43:57 PM
Old 12-07-2010
set ssh with keyless on these 100 unix servers with root account, make sure you can login by ssh without password.

test by below command

Code:
$ cat server.list
server1
server2

$ cat server.list |xargs -i ssh {} uname -n

test below code on one server first, if it is successful, add all servers in file server.list
Code:
while read server
do
  ssh $server perl -i.bak`date +%Y%m%d` -pe 's/ntpserver_old/new_ntpservername/'  /etc/inet/ntp.conf
done < server.list


Last edited by rdcwayx; 12-07-2010 at 07:43 PM..
 

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SSH-COPY-ID(1)						      General Commands Manual						    SSH-COPY-ID(1)

NAME
ssh-copy-id - install your public key in a remote machine's authorized_keys SYNOPSIS
ssh-copy-id [-i [identity_file]] [user@]machine DESCRIPTION
ssh-copy-id is a script that uses ssh to log into a remote machine (presumably using a login password, so password authentication should be enabled, unless you've done some clever use of multiple identities) It also changes the permissions of the remote user's home, ~/.ssh, and ~/.ssh/authorized_keys to remove group writability (which would oth- erwise prevent you from logging in, if the remote sshd has StrictModes set in its configuration). If the -i option is given then the identity file (defaults to ~/.ssh/id_rsa.pub) is used, regardless of whether there are any keys in your ssh-agent. Otherwise, if this: ssh-add -L provides any output, it uses that in preference to the identity file. If the -i option is used, or the ssh-add produced no output, then it uses the contents of the identity file. Once it has one or more fin- gerprints (by whatever means) it uses ssh to append them to ~/.ssh/authorized_keys on the remote machine (creating the file, and directory, if necessary) SEE ALSO
ssh(1), ssh-agent(1), sshd(8) OpenSSH 14 November 1999 SSH-COPY-ID(1)
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