Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Executing multiple ssh commands inside a shell simultaneously

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Executing multiple ssh commands inside a shell simultaneously
Prev   Next
# 1  
Old 12-18-2012
Executing multiple ssh commands inside a shell simultaneously
I would like to execute a commands in four different servers through ssh at a single instance(simultaneously).

Below are the details with examples,

Code:
ssh user1@server1 "grep xxxx logs"

ssh user1@server2 "grep xxxx logs"

ssh user1@server3 "grep xxxx logs"

Each statement will take some time to complete, and if i give like the above inside an shell, only when ssh at server1 is complete it will move to the next ssh.

For and while loop also takes one by one, only when one ssh is done, it picks the next ssh.

But, i would like to execute these three ssh commands at the same instance inside the shell and wait till all the three ssh gets completed and come out of the shell.

Could you please help me out?
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Executing multiple commands in a file at same time

Hi Am having file.ksh as below wc -l file1.txt wc -l file2.txt wc -l file3.txt wc -l file4.txt i want all the commands in this file to execute in same time please help Thanks in advance (1 Reply)
Discussion started by: ragu.selvaraj
1 Replies

2. Shell Programming and Scripting

Executing remote commands via ssh

Hi, I'm tryin to write a script that will collect information about a remote servers, put them into variables and print them to screen. # /usr/bin/bash ls $1 > /dev/null 2>/dev/null if then echo "$1 is file" for server in $(cat $1) do # echo $server ... (5 Replies)
Discussion started by: moshesa
5 Replies

3. Shell Programming and Scripting

executing commands in remote server using ssh

I have some commands which need to be executed in remote machine. I have Linux Server from where I need to connect to Solaris server using ssh and then declare some variable over there and run some commands. I don't want to call a script which is present in Solaris server from Linux server... (7 Replies)
Discussion started by: maitree
7 Replies

4. Shell Programming and Scripting

Need help with executing multiple commands in remote machine

Hi, I work on a jumpserver and I wrote a script to transfer a file from source server to destination server. #!/bin/ksh echo "\nEnter the file name:\n" read name echo "\nSelect the Source server\n" echo "1. ODS PROD " echo "2. ODS DROPBOX" echo "3. ODS STE" echo "4. ODS STE DROPBOX"... (6 Replies)
Discussion started by: ajayakunuri
6 Replies

5. Solaris

Help with executing multiple remote commands after multiple hops

Hi SSHers, I have embedded this below code in my shell script.. /usr/bin/ssh -t $USER@$SERVER1 /usr/bin/ssh $USER2@S$SERVER2 echo uptime:`/opt/OV/bin/snmpget -r 0 -t 60 $nodeName system.3.0 | cut -d: -f3-5` SSH to both these servers are public-key authenticated, so things run... (13 Replies)
Discussion started by: LinuxUser2008
13 Replies

6. UNIX for Dummies Questions & Answers

how to stay in remote shell after executing commands in ssh?

the ssh calling convention: ssh <server> If I put commands in the section, ssh will execute them immediately after logging in and return to local shell. I want to stay in the remote shell after executing these commands. How can I achieve this? Thanks for all. (1 Reply)
Discussion started by: hplonlien
1 Replies

7. Shell Programming and Scripting

executing commands over ssh

Hi I am trying to send a command over ssh with a parameter but the shell fails to expand the command properly any ideas what am i doing wrong with this. This is ssh on AIX for i in 71 72 73 74 75 do for server in server1 server2 do somestr="Some String" echo "$server... (3 Replies)
Discussion started by: xiamin
3 Replies

8. Shell Programming and Scripting

Automating executing commands on multiple tapes and changing (loading) them

The thing that we need to be able to do is: - Scanning tapes from failed backup jobs with bscan (a bacula command) - loading the next tape with the mtx command Bscan does unload tapes but does not load them. Bscan comes with this message when it's done with a tape: Mount Volume... (0 Replies)
Discussion started by: Tr00tY
0 Replies

9. Programming

How to know there are multiple instances inside application itself,not through ssh

hi, As you know, in Windows Programming, in WinMain method you will give n argument which you can know if this is another instance of the application or just the fresh execution. How this functionality can be achieved in Linux application? Most of suggestions i have seen here in threads are... (5 Replies)
Discussion started by: Sedighzadeh
5 Replies

10. Shell Programming and Scripting

How to run unix commands in a new shell inside a shell script?

Hi , I am having one situation in which I need to run some simple unix commands after doing "chroot" command in a shell script. Which in turn creates a new shell. So scenario is that - I need to have one shell script which is ran as a part of crontab - in this shell script I need to do a... (2 Replies)
Discussion started by: hkapil
2 Replies
Login or Register to Ask a Question

LEARN ABOUT OSX

ssh-keysign

SSH-KEYSIGN(8)						    BSD System Manager's Manual 					    SSH-KEYSIGN(8)

NAME

     ssh-keysign -- ssh helper program for host-based authentication

SYNOPSIS

     ssh-keysign

DESCRIPTION

     ssh-keysign is used by ssh(1) to access the local host keys and generate the digital signature required during host-based authentication with
     SSH protocol version 2.

     ssh-keysign is disabled by default and can only be enabled in the global client configuration file /etc/ssh/ssh_config by setting
     EnableSSHKeysign to ``yes''.

     ssh-keysign is not intended to be invoked by the user, but from ssh(1).  See ssh(1) and sshd(8) for more information about host-based authen-
     tication.

FILES

     /etc/ssh/ssh_config
	     Controls whether ssh-keysign is enabled.

     /etc/ssh/ssh_host_dsa_key
     /etc/ssh/ssh_host_ecdsa_key
     /etc/ssh/ssh_host_rsa_key
	     These files contain the private parts of the host keys used to generate the digital signature.  They should be owned by root, read-
	     able only by root, and not accessible to others.  Since they are readable only by root, ssh-keysign must be set-uid root if host-
	     based authentication is used.  Note that ssh-keysign is not set-uid by default on Mac OS X.

     /etc/ssh/ssh_host_dsa_key-cert.pub
     /etc/ssh/ssh_host_ecdsa_key-cert.pub
     /etc/ssh/ssh_host_rsa_key-cert.pub
	     If these files exist they are assumed to contain public certificate information corresponding with the private keys above.

SEE ALSO

     ssh(1), ssh-keygen(1), ssh_config(5), sshd(8)

HISTORY

     ssh-keysign first appeared in OpenBSD 3.2.

AUTHORS

     Markus Friedl <markus@openbsd.org>

BSD
								  August 31, 2010							       BSD