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Full Discussion: [SHELL] Output formatting
Top Forums Shell Programming and Scripting [SHELL] Output formatting Post 302238343 by cfajohnson on Friday 19th of September 2008 04:07:12 PM
Old 09-19-2008

The only thing that script will do is print 'hostname,' (without a newline) to test_details.txt

I think what you want is:

Code:
HOSTNAME="hostname"
FREE="free -m | grep Mem" 
SSH="ssh"
USER="root"
while read i
do
   $SSH $USER@$i "$HOSTNAME ; $FREE" |
      while IFS= read -r line
      do
        printf "%s," "$HOSTNAME"
      done
      echo
done < ipaddresses.txt > test_details.txt

Or, if you want all the values returned by $FREE to be comma separated (untested):

Code:
HOSTNAME="hostname"
FREE="free -m | grep Mem"
SSH="ssh"
USER="root"
while read i
do
   $SSH $USER@$i "$HOSTNAME ; $FREE" |
    {
      read hostname
      printf "%s," "$hostname"
      tr -s " " ,
    }
done < ipaddresses.txt > test_details.txt

 

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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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