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Full Discussion: Error with script for ssh
Top Forums Shell Programming and Scripting Error with script for ssh Post 303001859 by RudiC on Saturday 12th of August 2017 10:10:28 AM
Old 08-12-2017
There are quite some errors and opportunitites in your code:
- the $(host) is a "command substitution", not a variable expansion. Use braces instead (as you do for the list files).
- the ´hostname´ is a "command substitution" again, making the remote shell try to execute the result of the hostname command, not the command itself. Remove backticks.
- same for the echo command.
- UUOC (useless use of cat) in the for loop. Better: redirected while read.
- for more than one server in the list, all results except for the very last one will be overwritten in the output file. Use append redirection (>>) or shift the redirection.

Consider
Code:
while read host
  do  ssh $host "hostname; echo $HOME"
  done < ${SERVERLIST}  > ${OUTPUTLIST}

This User Gave Thanks to RudiC For This Post:
sam_bd
 

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LEARN ABOUT X11R4

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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