Thread: Telnet by hostname without modifying /etc/hosts file

Hi all,

I have several devices in my network and I have a file with the name / ip of each device, is there any way i can execute a telnet to that file and execute the line I want so i can access the device I need?

e.i

hosts
1.1.1.1 main
2.2.2.2 smpt

telnet hosts main

Thanks all

Hi,

If you want to access network device by name , then you just need to configure "/etc/hosts" file as below.

Code:

192.168.1.1   router
192.168.1.100 switch1

after that you can simply do

HTML Code:

ping router

and

HTML Code:

telnet switch1

Originally Posted by Rahul.Patil

Hi,

If you want to access network device by name , then you just need to configure "/etc/hosts" file as below.

Code:

192.168.1.1   router
192.168.1.100 switch1

after that you can simply do

HTML Code:

ping router

and

HTML Code:

telnet switch1

The issue is i dont have root or change the hosts file.

Originally Posted by opnine

The issue is i dont have root or change the hosts file.

You can use alias as below

Code:

alias telnet_router 'telnet 192.168.1.1'

in your ~/bashrc file

Or you can use below function [ finally after some R&D , i created below function , just use it. may be some correction from Master ]

PHP Code:

function do_telnet () {
# just copy and past this fucntion ~/.bashrc file.
# then run "source ~/.bashrc" command to reload function or just logout and login
# then just run "do_telnet router" command to connect router or host
#

[ $# -eq 0 ] && echo "Please give hostname to connect destination" || {
. ~/.hosts  # path of host file
                        # in this file keep entry as below
                        # router=192.168.1.1   # without hash sign(#)
                        # switch=192.168.1.100
                        
eval telnet \$$@
}

} 


Originally Posted by Rahul.Patil

You can use alias as below

Code:

alias telnet_router 'telnet 192.168.1.1'

in your ~/bashrc file

Or you can use below function [ finally after some R&D , i created below function , just use it. may be some correction from Master ]

PHP Code:

function do_telnet () {
# just copy and past this fucntion ~/.bashrc file.
# then run "source ~/.bashrc" command to reload function or just logout and login
# then just run "do_telnet router" command to connect router or host
#

[ $# -eq 0 ] && echo "Please give hostname to connect destination" || {
. ~/.hosts  # path of host file
                        # in this file keep entry as below
                        # router=192.168.1.1   # without hash sign(#)
                        # switch=192.168.1.100
                        
eval telnet \$$@
}

} 


Fisrt of all thank you for all your time,, and please let me ask,, for the script you send me I have to make changes in the host file?

THanks !!

Originally Posted by opnine

Fisrt of all thank you for all your time,, and please let me ask,, for the script you send me I have to make changes in the host file?

THanks !!

you don't need to do any changes in "/etc/hosts" file, it's your own host file : ~/hosts

Hey,

I am back with New Solution

Code:

echo "router 10.0.0.1" >> ~/my_hosts
export HOSTALIASES=~/my_hosts

then just use

Code:

telnet router

and for permanent save hostaliases append HOSTALIASES=~/my_hosts in ~/.bashrc

Code:

echo "export HOSTALIASES=~/my_hosts" >> ~/.bashrc

Note:- Make sure alias name does not include with (.) dot and any special character