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Full Discussion: while loop stops after first iteration - remote ssh exit command problem?
Top Forums Shell Programming and Scripting while loop stops after first iteration - remote ssh exit command problem? Post 302597308 by complex.invoke on Friday 10th of February 2012 12:50:04 AM
Old 02-10-2012
Please have a look at this: Shell Loop Interaction with SSH
A better solution is to use the for loop
Code:
for line in $(cat ${mxg_hosts_file}); do
    echo "Connecting and Upgrading ${line%%:*}"
    ssh root@${line%%:*} -p ${line##*:} "bash -s" < command_to_run
done

command_to_run is a script that you intended to execute on the remote boxes
Code:
aptitude update 
aptitude safe-upgrade -y
shutdown -r now

 

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LEARN ABOUT HPUX

ssh-argv0

SSH-ARGV0(1)                                                BSD General Commands Manual                                               SSH-ARGV0(1)

NAME

     ssh-argv0 -- replaces the old ssh command-name as hostname handling

SYNOPSIS

     hostname | user@hostname [-l login_name] [command]

     hostname | user@hostname [-afgknqstvxACNTX1246] [-b bind_address] [-c cipher_spec] [-e escape_char] [-i identity_file] [-l login_name]
     [-m mac_spec] [-o option] [-p port] [-F configfile] [-L port:host:hostport] [-R port:host:hostport] [-D port] [command]

DESCRIPTION

     ssh-argv0 replaces the old ssh command-name as hostname handling.  If you link to this script with a hostname then executing the link is
     equivalent to having executed ssh with that hostname as an argument.  All other arguments are passed to ssh and will be processed normally.

OPTIONS

     See ssh(1).

FILES

     See ssh(1).

AUTHORS

     OpenSSH is a derivative of the original and free ssh 1.2.12 release by Tatu Ylonen.  Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos,
     Theo de Raadt and Dug Song removed many bugs, re-added newer features and created OpenSSH.  Markus Friedl contributed the support for SSH
     protocol versions 1.5 and 2.0.  Jonathan Amery wrote this ssh-argv0 script and the associated documentation.

SEE ALSO

     ssh(1)

Debian Project                                                   September 7, 2001                                                  Debian Project
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