Can I add a parameter in-between my command? [duplicate] - bash

Question

This question already has answers here:
Make a Bash alias that takes a parameter?
(24 answers)
Closed 3 years ago.
Coding is one of my weaker areas and this is my first question on Stack Overflow.
What I want to is add a parameter in-between my command, and I'm thinking it can be done with an alias or function.
The command I am using is telnet and it is used to log into our switches.
The full command:
$ telnet switchname.compname.com
What I want to type:
$ enter 'switchname'
In turn, making the telnet command a simple enter and not having to consistently type .compname.com every time.

Answer 1

A simple function does nicely:
enter() { telnet $1.compname.com; }

Answer 2

Create a function to open the telnet session to the switchname given by the first argument (or to your default switchname if no argument is provided), e.g. in .bashrc you could do:
mytelnet() {
local swname=${1:-defaultname} ## use local vars within function
telnet $swname.compname.com ## connect to your switch
}
Then create the alias you want for enter, e.g.
alias enter='mytelnet'
Now at the command line you can type:
$ enter ## to go to defaultname.compname.com
or
$ enter switchname ## to go to switchname.compname.com
For testing you can just enter the function and alias on the command line, e.g.
$ mytelnet() { local swname=${1:-defaultname}; telnet $swname.compname.com; }
$ alias enter='mytelnet'
Then telnet away...
(note: you can simply name your function enter() and do away with the alias. I just find it convenient to define my functions at the top of my .bashrc and then create aliases, as needed, in the various sections below, but using an alias is by no means a requirement)

Answer 3

Try to use an alias in your rcfile, like ~/.bashrc, for example.
alias mytelnet='telnet the.desired.site'
Then source your rcfile like
source ~/.bashrc
or the equivalent
. ~/.bashrc
and type mytelnet to execute the command.
Or just use a bash variable, like
VAR="the.desired.site"
and execute telnet this way:
telnet $VAR
Also you can add a function to your rc file, like David C. Rankin mentioned.
function mytelnet () {
telnet <<< "$#"
}
export -f mytelnet
<<< "$#" will feed telnet in the same way, as if you are using any other command on the commandline with their additional parameters, like in bash $1, $2 and so on.
export -f marks the function mytelnet to be passed to child processes in your environment.