Sponsored Content
Top Forums UNIX for Beginners Questions & Answers Expect in Bash - and then compare md5sum Post 302977886 by bakunin on Friday 22nd of July 2016 06:09:19 PM
Old 07-22-2016
Don Cragun is right, rsync would be the solution of first choice.

But still, if this is ruled out somehow for some reason we have yet to find out:

Quote:
Originally Posted by xgringo
I don't need to check connectivity but if config files are the same in certain directories.
If you do not need to check for connectivity then all the better. But in your threads title and the first post you mentioned you have to use "expect" and this can conceivably only be to transmit passwords. If you can guarantee somehow your ssh-keys can always be readily exchanged (though i'd still check that before i'd base my procedures on that) you can simply use ssh to remote-execute any command(s) you want and that would probably be a cleaner solution than using expect to initiate a pseudo-interactive ssh-session.

If you need to remotely execute arbitrary commands then you might want to do it this way (sketch):

Code:
while read HOST USER ; do
     if ! ssh -nqo 'BatchMode=yes' "$USER"@"$HOST" some_command
          echo "Error: some_command returned $?"
     fi
done <<_EOF_
host1 user1
host2 user2
....
_EOF_

Again, I'd check if indeed the keys are exchanged by including the function i showed you and call it somewhere inside the loop as part of my errror checking, but that is up to you. You should be able to build your custom routine around the shown mechanism pretty easily.

I hope this helps.

bakunin
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

expect in bash script

Hi, I'm writing a shell script that calls a few commands that prompt the user for two simple yes/no questions. if the answers are consistent (the first is a yes, the second is a no), what would my expect script look like? Google is only giving me answers for scripts where I telnet or ssh. right now... (3 Replies)
Discussion started by: js741
3 Replies

2. Shell Programming and Scripting

Expect in bash to get the return value

cat test.sh #!/bin/sh expect <<- EOF set timeout 5 spawn ssh -o StrictHostKeyChecking=no lyang0@128.224.178.245 -C mkdir -p /tmp expect { "Password:" {send "root\r"} } spawn scp -o StrictHostKeyChecking=no /tmp/1 lyang0@128.224.178.245:/tmp/ ... (1 Reply)
Discussion started by: yanglei_fage
1 Replies

3. Shell Programming and Scripting

Compare files in directories with md5sum

And not to start. I can compare files, that's easy. The problem is that I compare files in a directory, and check if these files exist in another directory. The problem is that the file names are not the same. So I have to compare with "md5sum" or something similar. How I can do? All this in... (7 Replies)
Discussion started by: Jomeaide
7 Replies

4. Shell Programming and Scripting

Expect - bash and variables

I was wondering if anyone could provide some assistance. I trying to run an expect script within bash and get the results of a variable called RESULT. I Have tried a few things but none of them have worked. I know that the child process (the expect script) in this instance cannot set a variable... (6 Replies)
Discussion started by: ylafont
6 Replies

5. Shell Programming and Scripting

Problems with expect and sftp in bash

I'm having trouble with some automated sftp pulls. I'm using expect inside bash scripts and spawning SFTP. Some times the expect seems bog down. I have tried to put sleeps in my code to give everything time to work before I move on to next step but I till continue to get issues. For example when... (2 Replies)
Discussion started by: gosteen
2 Replies

6. Shell Programming and Scripting

Compare md5sum two servers' setup

I'm trying to think of a way to compare two boxes and make sure their files will be the same. There may be extra files on one side and some on the other. I also need to make sure the file content is identical. So far I've gotten this to create a file find /directorypath/ -type f -name... (3 Replies)
Discussion started by: xgringo
3 Replies

7. Shell Programming and Scripting

Bash script with expect

Dear all Hi I want use expect in bash so that we can not use these with each other /bin/bash. With. /usr/bin/expect How can use these with on script or how can call a script from other script #!/bin/bash clear echo "================================== " echo "Enter your Esxi IP"... (3 Replies)
Discussion started by: Baber
3 Replies

8. Shell Programming and Scripting

Bash expect problem

Hey there :) I have a Bash Script and I'm trying to update Roundcube, but theres a user interactive line like: bin/installto.sh /var/www/mail/rc Upgrading from 1.1.3. Do you want to continue? (y/N) I'm trying to avoid this user interaction like this: cd roundcubemail-1.2.1 >/dev/null... (5 Replies)
Discussion started by: Aeris
5 Replies

9. Shell Programming and Scripting

Compare two md5sum

Hello, First of all I want to apologize because i'm not a admin or coder and maybe all my efforts to write only this small script in my life would need one week full time reading man pages and forums but... I don't have the money to offer me to get this time and the script I want to do seems... (5 Replies)
Discussion started by: toscan
5 Replies

10. UNIX for Advanced & Expert Users

Bash script + expect

im very happy to back for this forum I have servers with alias of double dns extentions: sample: servera.test.com servera.test1.com serverb.test.com serverb.test1.com I need to login to that severs and executing the set of commands if test.com failed then try to login via... (0 Replies)
Discussion started by: prakash0106
0 Replies
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 and append the indicated identity file to that machine's ~/.ssh/autho- rized_keys file. 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.) NOTES
This program does not modify the permissions of any pre-existing files or directories. Therefore, if the remote sshd has StrictModes set in its configuration, then the user's home, ~/.ssh folder, and ~/.ssh/authorized_keys file may need to have group writability disabled manu- ally, e.g. via chmod go-w ~ ~/.ssh ~/.ssh/authorized_keys on the remote machine. SEE ALSO
ssh(1), ssh-agent(1), sshd(8) OpenSSH 14 November 1999 SSH-COPY-ID(1)
All times are GMT -4. The time now is 04:25 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy