take input in shell script while running script with $1 code example

Example 1: run sh with parameter

> ./myscript myargument
myargument becomes $1 inside myscript.

Example 2: get additional parameters linux scripting

$ cat myscript
#!/bin/bash
echo "First arg: $1"
echo "Second arg: $2"
$ ./myscript hello world
First arg: hello
Second arg: world