Hostsfile generator Post: 303040870

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Top Forums Shell Programming and Scripting Hostsfile generator Post 303040870 by Marti95 on Friday 8th of November 2019 04:43:30 AM

11-08-2019

Registered User

Hostsfile generator

Hello

I use a bash script to creating the hosts file /etc/hosts

Quote:

#!/bin/bash
System is Centos7

But there is a bug inside my output and I want to fix this.

My Array looks like this:

Code:

205,IP         111.122.133.20 
205,HOST2      unas           
205,HOST1      unas15533      
205,COMMENT    # UNAS         
775,IP         111.122.133.77 
775,HOST2      wlan           
775,HOST1      15533-wlan     
775,COMMENT    # WLAN Access Point
1015,IP        111.122.133.101
1015,HOST2     rdp1           
1015,HOST1     15533-rdp1     
1015,COMMENT   # RDP-Terminal 1
1025,IP        111.122.133.102
1025,HOST2     rdp2           
1025,HOST1     15533-rdp2     
 1025,COMMENT   # RDP-Terminal 2

The created hosts file looks something like this:

Quote:

# x.x.x.001 - x.x.x.020 ----- Gateway, Switch, Picco und Sicherung
192.168.123.1 123wan wan # Opensystem Gateway
192.168.123.2 123switch1 switch1 # Switch 1
192.168.123.3 123switch2 switch2 # Switch 2
192.168.123.5 123imm1 imm1 # IMM 1
192.168.123.20 unas123 unas # UNAS Sicherung

# x.x.x.41 - x.x.x.50 Server
192.168.123.41 123virtsrv1 virtsrv1 # CentOS

# x.x.x.161 - x.x.x.190 ----- Netzwerkdrucker
192.168.123.161 123mps1 mps1 # Netzwerkdrucker 1
192.168.123.162 123mps2 mps2 # Netzwerkdrucker 2
192.168.123.163 123mps3 mps3 # Netzwerkdrucker 3
192.168.123.164 123mps4 mps4 # Netzwerkdrucker 4

# #x.x.x.191 - x.x.x.199 ----- WPS Drucker und PreisChecker
192.168.123.191 123toschiba1 toschiba1 # Toshiba WPS 1
192.168.123.192 123toschiba2 toschiba2 # Toshiba WPS 2

# 10.168.123.xxx ----- DMZ
10.168.123.2 123rowa rowa # Rowa (DMZ)

I creat the hosts file with this command:

Code:

echo "===================================================="
d=`date +%Y%m%d`
touch "/tmp/hosts.${d}"
IFS=$'\n'
echo "${!ENTRIES[*]}" | sort -t, -k1,1n -k2,2.2r -k2.3 | while read IX; do printf "%-10s\n" ${ENTRIES[$IX]}; done | paste -sd"\t\t\t\n" >> "/tmp/hosts.${d}"
echo "Script finished"
echo "===================================================="

I would like to format the file so that the distances are even (sometimes there is a bigger gap between IP and hosts1, between hosts 1 and hosts 2, ...).
Also, I do not want to use tabs because this causes problems.

Thank you for the help Smilie

Marti95

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aggregate-ios

AGGREGATE-IOS(1)					      General Commands Manual						  AGGREGATE-IOS(1)

NAME

       aggregate-ios - optimise a concatenated set of cisco/IOS prefix filters to help make them nice and short.

SYNOPSIS

       aggregate-ios <source_config >optimised_config

DESCRIPTION

       Takes  cisco IOS configuration on stdin, and optimises any prefix filters found using aggregate(1).  Optimised filters are produced on std-
       out.

OPTIONS

       None.

DIAGNOSTICS

       Any diagnostics produced by aggregate(1) are passed through on stderr.

EXAMPLES

       The following configuration fragment:

	 ip prefix-list AS65530 description Foo, Inc
	 ip prefix-list AS65530 permit 10.1.0.0/16
	 ip prefix-list AS65530 permit 10.2.0.0/16
	 ip prefix-list AS65530 permit 10.2.1.0/24
	 ip prefix-list AS65530 permit 10.3.0.0/16
	 ip prefix-list AS65531 description Bar.Com
	 ip prefix-list AS65531 seq 5 permit 192.168.1.0/24
	 ip prefix-list AS65531 seq 10 permit 192.168.2.0/24
	 ip prefix-list AS65531 seq 15 permit 192.168.0.0/19

       is optimised as follows:

	 ip prefix-list AS65530 permit 10.1.0.0/16 le 24
	 ip prefix-list AS65530 permit 10.2.0.0/15 le 24
	 ip prefix-list AS65531 permit 192.168.0.0/19 le 24

SEE ALSO

       aggregate(1)

HISTORY

       Aggregate-ios was written by Joe Abley <jabley@mfnx.net>.

BUGS

       All those in aggregate(1) and then some :)

Joe Abley							 2000 November 27						  AGGREGATE-IOS(1)