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Full Discussion: Scripting issue
Top Forums Shell Programming and Scripting Scripting issue Post 303005305 by arun_adm on Tuesday 17th of October 2017 03:23:57 AM
Old 10-17-2017
Scripting issue

Hi Experts,

I'm stuck with a single liner bash script. Need your help to fix it.

Let me brief you that what is my expectations from this script.

I need the interfaces configured for a list of servers, their respective IP address and FQDN in a output file. The output should be in the same line.

Here is the script which I'm running it from a jump server having ssh access with pasword.

Code:
for i in `cat server-list.txt`;do echo "+++++++++ $i +++++++++";ssh -q $i 'paste <(/sbin/ifconfig -a|egrep -i "eth|bond"|awk '{print $1}') <(/sbin/ifconfig -a|egrep "inet addr"|grep -v "127.0.0.1"|awk '{print $2}'|cut -d ':' -f 2) <(/sbin/ifconfig -a|egrep "inet addr"|grep -v "127.0.0.1"|awk '{print $2}'|cut -d ':' -f 2|xargs -n1 nslookup | grep -v nameserver | cut -f 2 | grep name | cut -f 2 -d "=" | sed 's/ //')';echo "========================="; done > output.txt


Output should look like this -


Code:
+++++++++ name of server1 +++++++++
eth1 <ip-of-eth1> <fqdn>
eth3 <ip-of-eth3> <fqdn>
eth4 <ip-of-eth4> <fqdn>
=========================
+++++++++ name of server2 +++++++++
eth1 <ip-of-eth1> <fqdn>
eth3 <ip-of-eth3> <fqdn>
eth4 <ip-of-eth4> <fqdn>
=========================
+++++++++ name of server3 +++++++++
eth1 <ip-of-eth1> <fqdn>
eth2 <ip-of-eth2> <fqdn>
=========================


When I execute it, it gives "paste: /dev/fd/63" No such file or directory".

It is not mandatory to use paste command, anything will work which can put the interface (eth0, ethx, bondx etc) ip address:wall and fqdn of that ip in the same line with a space or tab between them.

Thanks in Advance.

SmilieSmilieSmilie

Last edited by Scott; 10-17-2017 at 05:29 AM.. Reason: Please use code tags - and it would be nice if you could format your code so it's readable! Thanks.
 

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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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